WATLOW ANAFAZE SYSTEM 32 HARDWARE Installation And Operation Manua Revision 5 December 21, 1988 Watlow Anafaze 344 Westridge DR Watsonville, CA 95076 Phone: 831-724-3800 Fax: 831-724-0320 Copyright (c) 1987-1988. All RIGHTS RESERVED: No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form by any means; electronic, mechanical, photo copying, recording, or otherwise, without the prior written permission of Watlow Anafaze Printed in U.S.A.
STATEMENT OF WARRANTY ANAFAZE, Incorporated warrants that the Products furnished under this Agreement will be free from material defects in material and workmanship for a period of 90 days from the date of shipment. The customer shall provide notice to ANAFAZE, Incorporated of any such defect within one week after the Customer's discovery of such defect.
WARNING ANAFAZE HAS MADE EFFORTS TO ENSURE THE RELIABILITY AND SAFETY OF THE SYSTEM 32 AND PROVIDE RECOMMENDATIONS FOR ITS SAFE USE IN SYSTEMS APPLICATIONS. PLEASE NOTE THAT IN ANY APPLICATION, FAILURES CAN OCCUR THAT WILL RESULT IN FULL CONTROL OUTPUTS OR OTHER OUTPUTS THAT MAY CAUSE DAMAGE OR UNSAFE CONDITIONS IN THE EQUIPMENT OR PROCESS CONNECTED TO THE ANAFAZE SYSTEM 32.
TABLE OF CONTENTS 1.0 INTRODUCTION_____________________________________________ 1 1.1 SYSTEM FEATURES _________________________________________1 1.2 PLUG IN SYSTEM 32 MODULES_______________________________2 1.3 ANASOFT 32 -- POWERFUL OPERATING SOFTWARE __________4 2.0 SPECIFICATIONS____________________________________________ 6 2.1 ANALOG INPUTS ____________________________________________6 2.2 OPERATING PARAMETERS __________________________________7 2.
7.0 DETAILED MODULE DESCRIPTIONS ________________________ 38 7.1 PROCESSOR I/O MODULE -- A32-PIOM_______________________38 7.2 REED RELAY ANALOG INPUT MODULE -- A32-RRAIM ________39 7.3 SOLID STATE ANALOG INPUT MODULE -- A32-SSAIM ________41 7.4 ANALOG OUTPUT MODULE -- A32-AOM _____________________41 7.5 PULSE INPUT MODULE -- A32-PIM___________________________42 7.6 POWER SUPPLY----PART NO. A32-PS_________________________42 7.7 OPERATOR STATION -- A32-OS______________________________42 8.
1.0 INTRODUCTION The ANAFAZE SYSTEM 32 is the key element used to form an innovative measurement and control system. It combines its power with an IBM PC or similar computer to deliver an extremely efficient data acquisition and process control system. The SYSTEM 32 concentrates its power in analog measurement, independent digital loop control, alarm monitoring, and signal processing.
1.1.3 PROCESS INTEGRITY: The ANAFAZE approach delivers high integrity because the SYSTEM 32 independently controls and checks each loop for alarms while it is in turn checked by the computer. Thus a computer failure will not affect the process and a controller problem will be detected by the computer. Further integrity is built in to the SYSTEM 32 since it has EEROM memory to protect control and alarm parameters. A watchdog timer with digital output adds to process integrity. 1.1.
Configurations can start with only the PROCESSOR I/O MODULE to provide 32 time proportioning or on/off open loop control outputs. For closed loop control, simply add an ANALOG INPUT MODULE, either reed relay for 16 inputs, or solid state for 32 inputs. A plug in ANALOG OUTPUT MODULE provides 16 analog control outputs. Systems can be matched to different applications by combining the following modules: 1.2.
1.2.2 ANALOG INPUT MODULES: Two optically-isolated analog input modules are available for the SYSTEM 32. A 16 channel reed relay switching module and a 32 channel solid state switching module. The reed relay module provides the highest level of input noise protection and the solid state module is more economical. The two types of input modules can be mixed in a single controller.
line, real-time data for each input can be graphically plotted on the screen. Data is continuously stored for every input to provide a history over user selected time intervals. These on line plots enable quick analysis of process conditions for optimizing performance, tuning control loops, determining reasons for alarms, and other situations. 1.3.2 TUNING AND PROCESS SET UP: The password protected tune menu displays necessary data for efficient tuning since it displays real time process information.
2.0 SPECIFICATIONS 2.1 ANALOG INPUTS Number of channels: 32 for PID control, 48 total with reed multiplexer, 96 total with solid state. Multiplexing: three wire reed relay, guarded inputs. two wire solid state. A/D converter: integrating voltage to frequency. Loop update: each loop 2 times per second, reed modules; 1 time per second solid state. Input isolation: optical coupling. Input resolution: 0.02% full scale [Approximately 12.7uv]. Temp. coefficient: .005% per degree.
2.2 OPERATING PARAMETERS Independently set for each loop through serial interface. Input type: any standard type (see above), any mix. Gain: 0 to 255 proportional; 0 to 510 on/off. Proportional Band: Direct reading in engineering units of the loop range. Integral: 0 to 1020 seconds. Reset: .05 to 60 Repeats/Min. [4 sec. resolution]. Derivative: 0 to 255 sec. Rate: .01 to 4.25 Min. Digital Filter: Averages last 0 to 255 outputs. [0- 127.5 sec. time constant]. Setpoint: +span. Resolution: 0.01%; 0.
2.5 CONTROL AND ALARM OUTPUTS 32 Individually selectable control outputs: Digital Outputs: Time proportioning, On/Off, Alarms: voltage output: 5VDC at 6ma maximum for solid state or other relays. Analog: voltage or current: selectable (4 to 20ma, or 0 to 5 volts). 2.6 DIGITAL INPUT OR OUTPUT 24 DigitalOutputs: TTL Level: @ 6ma 16 Digital Inputs: 2.7 ANALOG OUTPUTS Types: true= < 0.4v @ 6ma false = > 3.9v TTL Level: 0 to 5Vdc at 5ma max. 4-20ma at 8Vdc max [maximum loop impedance 400 ohms].
2.9 SUBASSEMBLY IDENTIFICATION A32-PIOM: PROCESSOR I/O MODULE includes factory selectable communication interface [RS-232 or current loop], 32 control outputs, 24 digital outputs, and 16 digital inputs. A32-RRAIM: REED RELAY ANALOG INPUT MODULE for 16 mixed sensor inputs including direct connection of thermocouples [J, K, or T] or millivolt [ -5 to 60mv]. Includes reference junction sensors for thermocouple inputs.
3.0 INSTALLATION There are some precautions that must be observed when installing SYSTEM 32: WARNING: ELECTRICAL SHOCK DANGER It is very important that all system power including the power input be disconnected before servicing the ANAFAZE SYSTEM 32. HIGH VOLTAGE MAY BE PRESENT EVEN WHEN POWER IS TURNED OFF. To reduce the danger of electrical shock always mount the SYSTEM 32 in an enclosure that prevents personnel contact.
6 SLOT HOUSING DIMENSIONS 11
3 SLOT HOUSING DIMENSIONS 12
POWER SUPPLY DIMENSIONS 13
3.1.3 DETACHABLE TERMINAL BLOCKS WARNING - ALWAYS CHECK TERMINAL LOCATION AND ORIENTATION All connections, except the Ac power supply, are made on removable terminal strips. Terminal strip removal is achieved by removing the retaining screws and pulling them directly away from the front panel. The terminal strips must be carefully installed in the correct position and not up side down. 3.
3.2.2 COMMUNICATIONS WATCHDOG TIMER The communications timer provides a method of turning off all control outputs if there is a problem in the host computer that effects communication. It operates by monitoring activity on the communication line. If this controller has not been contacted within the time interval, it automatically sets all control outputs to manual with zero outputs. A dedicated digital output is set when the watchdog times out.
1. All control output types are set to MANUAL 2. All output values for control outputs are set to 0%. 3. Digital output 72 is set ON. This output is available at TB2, pin 30. 4. The internal controller reset flag is set TRUE. (Hence the host will receive a RESET status code upon re-establishing communication). 3.2.3 BAUD RATE SELECTION Switch 6 is used to set the baud rate at either 2400 or 9600. communication problems occur try 2400 baud. Switch Setting 0 1 If Baud Rate 2400 9600 3.2.
3.3.2 POWER FUSE The SYSTEM 32 power supply is not fused. An external 1/2 AMP fuse in the AC input line is recommended. 4.0 COMMUNICATIONS SET-UP AND CONNECTIONS The ANAFAZE SYSTEM 32 is designed for three types of serial communications: RS-232, RS-485, and 20ma current loop. Up to 16 units can be connected on one communication line. 4.1 RS-232 The optically-isolated RS-232 interface is located on the processor module A32PIOM. Multiple SYSTEM 32 units are connected in parallel.
4.1.1 Other RS-232 Lines Some host computers or other RS-232 devices use additional communication lines that are not required by the SYSTEM 32. These include: RTS - Ready to Send CTS - Clear To Send DSR - Data Set Ready DTR - Data Terminal Ready If the host computer uses RTS and CTS or DSR and DTR, these lines should be connected together in pairs [or as shown in the computer manual]. Normally this is done in the RS-232 connector hood at the host computer.
Multiple SYSTEM 32 units are connected in series. R+ is connected to the first unit TX+ and TX- from the first unit is connected to TX+ of the next unit. These serial connections are continued until the last unit is reached. The last unit TX- is connected to the computer R-. T+ is connected to the first unit RX+ and the RX- is connected to the next unit RX+. The last unit RX- is connected to the computer T-. 4.3 RS-485 The RS-485 is a voltage balance long distance multi-point transmission interface.
Distance Wire Gauge 1500 ft. 4000 ft. 6000 ft. 28 AWG 24 AWG 22 AWG Recommended Cable Alpha 3492 Beldon 9729 Beldon 9184 The use of a shield depends on the noise environment and grounding considerations [4.3.3]. The above cables are shielded. 4.3.3 Connections Connection of the Anafaze controllers to a system computer requires an interface at the computer to convert RS-232 levels to RS-485. Anafaze recommends Black Box Model LD485A for this purpose.
ANAFAZE SYSTEM 32 connections for a single unit are as follows: COMPUTER Black Box LD485A SYSTEM 32 +485 Output (Start bit +5v) TXA RX+ #3 -485 Output (Start bit 0v) TXB RX- #4 +485 Input RXA TX+ #1 -485 Input RXB TX- #2 Shield-------Earth Ground---------Shield Do not Ground Note: Connect the shields to earth ground only at the computer or other 485 interface. No shield connection is required at the SYSTEM 32. Connect a 200 ohm terminating resistor between RX- and RX+ at the SYSTEM 32.
5.0 ANALOG INPUTS Connecting analog signals to the ANAFAZE SYSTEM 32 is normally straightforward. Most signals, including thermocouples can be directly connected and mixed in any order. However, some problems may occur that could reduce accuracy and possibly damage the unit. Sections 5.1 through 5.4 indicate some of the potential areas for concern. [See typical input DIAGRAM in section 5.13]. 5.
5.5 ANALOG INPUT MODULES Two types of analog input modules are available for the SYSTEM 32. The A32RRIAM -- REED RELAY ANALOG INPUT MODULE provides 16 analog inputs with reed relay switching. The A32-SSAIM -- SOLID STATE ANALOG INPUT MODULE provides 32 inputs with solid state switching. The A32SSAIM also provides 32 digital outputs for special systems.
capacitors can be installed for signal conditioning. Please consult ANAFAZE. The PC board silk screen shows the resistor locations. 5.6.2 USE OF THE SHIELD CONNECTION The shield connection provides a third input which is switched as each channel is measured. It is the ground reference for the measurement section.
5.6.4 DC CURRENT INPUTS Current inputs from transmitters are accommodated by placing resistors in the input section to convert the current input into a voltage. Different current input ranges are accommodated by selecting the proper resistor values. In general RC is selected to maintain a low source resistance. RA and RC produce the input full scale of 60mv. The positive input should be connected to the AUX terminal, and the negative input to the LOW terminal.
5.6.7 INFRARED NON-CONTACT TEMPERATURE SENSORS The ANAFAZE IRSM infrared sensing module is ideally suited for many infrared non-contact temperature applications. It can be supplied by ANAFAZE as a fully integrated system with the SYSTEM 32 configured to provide power for up to four IRSM sensing modules and for direct connection of the IRSM output.
5.8 SCALING AND CALIBRATION Since a computer is used to display the reading and load the setpoints, a mathematical step can be used to convert measurements and setpoints to engineering units and correct for known sensor calibration errors. For example, the ANAFAZE SYSTEM 32 does all thermocouple calculations in degrees F since this provides almost twice the resolution of degrees C.
5.9 DIAGRAMS OF TYPICAL INPUTS SEE SECTION 5.6 FOR DETAILED INFORMATION. Typical Thermocouple AUX O HIGH O-- + White ------------------------LOW O-- - Red ---------------------------SHLD O Type J T/C Shielded Thermocouple: To use shield remove jumper RD. Shield should be grounded at probe [see 5.6.2].
5.10 ANALOG INPUT CONNECTIONS 5.10.
5.10.
6.0 CONTROL OUTPUTS Control outputs are provided from the A32-PIOM -- PROCESSOR I/O MODULE for digital outputs and the A32-AOM -- ANALOG OUTPUT MODULE for analog outputs. The A32-AOM is not required for systems that do not need analog outputs. The A32-PIOM provides the digital control outputs, the serial communication, and miscellaneous digital inputs and outputs. WARNING -- GROUND LOOP POTENTIAL The ground of every control output is connected to the ANAFAZE 32 PID logic ground.
Alarm outputs are also used to activate SSR's when possible. The connections are essentially the same. Lower Terminal Block TB2 Low Dev. High Dev. +5V SSR 1 SSR 2 |--------| |--------| Pin | - + | | - + | |--|--|--| |--|--|--| Out 1 5 O--------------| | | | | | | Out 2 6 O-----------------|------------| | | | 11 O-----------------o---------------| 6.1.1 PROCESSOR READY The processor READY is a Watchdog Timer Output from the PIOM and is an indication that the microprocessor is running its program.
|--------| + 5vdc 31 O-------------------O + | | | Ready 33 O-------------------O - | | SSR | |--------| 6.1.2 OUTPUTS ENABLE: A32-PIOM ONLY The control outputs from the PIOM [TPV, ON-OFF, and DZC] for all 32 Loops are off, when Outputs ON Pin #35 of TB2 is TTL high or open. Also, the outputs are off, whenever the microprocessor is not ready. WARNING: If the outputs are not enabled through Pin 35, there will be no control output from the PIOM.
6.2 PROCESSOR I/O [A32-PIOM] PID OUTPUT CONNECTIONS 6.2.1 SCREW TERMINAL CONNECTIONS Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 TB1 [UPPER BLOCK] Tx+ COMPUTER COMMUNICATION Tx- SEE SECTION 4 Rx+ COMPUTER COMMUNICATION Rx- SEE SECTION 4 PID OUT LOOP 1 SEE SECTION PID OUT LOOP 2 6.
6.2.
6.3 ANALOG OUTPUT MODULE A32-AOM Analog control outputs are provided for the SYSTEM 32 by using the A32-AOM. Each module provides 16 analog outputs and up to two modules can be used in a single SYSTEM 32 for 32 control outputs. The AOM provides both 4 to 20ma with 400 ohms maximum load and 0- 5vdc at 5ma maximum. Both are available at the output terminals and either may be selected. WARNING: Both outputs may not used at the same time on the same loop. THE OUTPUTS WILL BE IN ERROR.
6.3.2 A32-AOM ANALOG OUTPUT MODULE CONNECTIONS Note the outputs are designated as follows: LOOP #C Positive terminal for 4-20madc output. LOOP #V Positive terminal for 0-5vdc output. NEG Negative terminals for both outputs.
7.0 DETAILED MODULE DESCRIPTIONS 7.1 PROCESSOR I/O MODULE -- A32-PIOM The PIOM is the main processor for the SYSTEM 32 and is required in each system. The only PIOM option available for standard systems is the type of communications interface. The PIOM has two microprocessors, an 8031 and 8088. These microprocessors perform all the SYSTEM 32 software operations using programs stored in PROM's.
Direct [Cool]. The outputs are 5vdc at 16ma maximum and are normally used to switch optically-isolated solid-state relays (SSR's). The alarm and status outputs include a global high and low deviation and a watchdog timer which are set by the SYSTEM 32. If ANASOFT-32 is used in the system computer, a global high and low process alarm output is set from the system computer. These outputs are also 5vdc and are designed to connect to SSR's. The additional digital I/O are used by special versions of ANASOFT-32.
7.2.1 Automatic Calibration The RRAIM includes two additional inputs: a full scale and a zero signal that are used by the PIOM for automatic full scale and zero calibration. The zero input is read on one scan to calibrate the analog amplifier zero, on the next scan the full scale input is read to calibrate the amplifier gain. The next two scans are used to read the thermocouple reference temperatures and then the calibration cycle starts again. Thus calibration is automatically updated every two seconds. 7.
7.2.7 Open Thermocouple Detection The RRIAM has upscale open thermocouple detection which is accomplished by placing a small current through the thermocouple leads. The input source impedance may go as high as 200 ohms before rated accuracy is effected. 7.2.8 Address Selection Each RRIAM has a jumper for address selection of the RRIAM in the SYSTEM 32. As many as three RRAIM's may be used per system. 7.
Each AOM has an address Dip switch for address selection of the AOM in the 32 System. Up to two AOM's may be used in each SYSTEM 32. 7.5 PULSE INPUT MODULE -- A32-PIM The PIM counts up to 32 pulse inputs at maximum pulse rates of 1kHz with 50% duty cycle pulses. The A32-PIM can only be used in systems with an expanded PROCESSOR I/O MODULE [A32-PIOM-EX]. 7.6 POWER SUPPLY----PART NO. A32-PS The power required by the SYSTEM 32 is 5 vdc at 5 amps.
The OPERATOR STATION requires ANASOFT-32 to be running in the system computer. It obtains its readings and changes the setpoints through the computer. The OPERATOR STATION can select any PIOM and any loop in the system for display and changes. The SP may be viewed for any loop in the system and may, if elected by the customer, be changed from the OPERATOR STATION. The ability to change SP from the OPERATOR STATION is selected in ANASOFT-32 by the user.
8.0 PID CONTROL This section provides some common definitions of control terms and information on control loop tuning. 8.1 CONTROL LOOPS A control loop may consist of four or five elements depending upon the placement of the functions of some elements. These elements are defined as follows: PRIMARY ELEMENT: This senses the PROCESS VARIABLE (PV), a thermocouple (T/C) measuring temperature is an example.
not be confused with with the type of control output signal: for example pulsed DC voltage or analog output. 8.1.3 ON/OFF CONTROL The simplest way to control the PROCESS VARIABLE (PV), for example temperature on an oven, to a desired SETPOINT (SP), operating temperature, is to use ON/OFF control. When the temperature is below the setpoint the heat is turned fully on and when the temperature is above the setpoint the heat is turned fully off.
Kp is the proportional gain, and FSR/Kp is referred to as the proportional band PB. The gain can be set from 0 to 255 for the SYSTEM 32. Note that when gain is specified in the control equation the output would be different for the same error if a different full scale is used. If PB is used the FSR cancels out and the PB is independent of the input range. TI is the integral or reset time, and 1/TI is referred to as the reset rate.
For temperature control, the most useful and easiest to use entry is the PB in actual degrees for the SYSTEM 32. The nominal setting of the PB can be between 5-20% of the SP. Thus, a SP of 300 oF may require a PB of 15-60 oF. To start use 10% of the SP. A good way of establishing a PB setting is to start at a wide PB and then to keep decreasing the PB [increasing gain] until the process cycles about the SP. Take note of the PB at this point and double the figure. PB should be set at this number.
Another way of viewing the reset action is to look at the integral term in the control equation of section 8.1.4. The control output due to this term is the error integrated over time. Thus a small offset over a long period of time will increase the integral sum and consequently the control output until the PV is equal to the SP. At this time, the proportional control output will be zero and the system will be stable at setpoint due to the integral sum.
RATE is also used to correct for rapid load changes, to slow large capacity processes, and to overcome the slew rates of electric motor actuators. The RATE function responds to the change in the error as a function of time. Mathematically it is the first derivative of the error as a function of time [see equation in section 8.1.4]. Thus if the error is steady the effect of rate is zero. As the PV approaches the setpoint, the rate term will be negative and reduce the control output.
Heating applications normally uses REVERSE ACTION and cooling applications normally will use DIRECT ACTION. The selection may also be dependent upon the application of two competing mediums of energy such as in a HEAT/COOL or TEMPERATURE/HUMIDITY applications. 8.1.14 HEAT/COOL DUAL OUTPUTS Certain processes such as plastic molding, plastic extrusion, refrigeration systems, test chambers, and others require both heating and cooling control loops.
Time proportioning control is a method of using a digital output and an on/off device such as a relay to essentially achieve an analog control signal. When the controller calculates the required control signal, it converts the percent output into a percent duty cycle and outputs this to the process through the relay. The process itself integrates this output and responds as if this percentage was applied in an analog manner.
8.1.11 DISTRIBUTED ZERO CROSSING Distributed Zero Crossing [DZC] output is the other time proportioning output available from the SYSTEM 32. This output is primarily for very fast acting electrical heating loads using SSR's. The open air heater coil is an example of a fast acting load. It should never be used with electromechanical relays. The combination of Distributed Zero Crossing and a solid state relay can approach the effect of analog phase angle fired control at a reduced cost.
and the full scale adjusted to match the expected PV range. The graphics of the Plot will show the effect of the PID tuning in real time. The understanding of PID functions would be useful in tuning loops, but not essential to a successful application of PID constants to a control loop. 8.2.1 INITIAL VALUES FOR PID LOOPS The following values may initially be used for the PID constants. They have been used for many applications and will serve as a starting point for tuning the controller.
range of the process control span. If the process elements are not correctly sized then it will be difficult and even impossible to tune the controller. 8.2.2 TUNING PID LOOPS 1. First set PB to 2% of the desired SP, Reset to .2 R/M, Rate to 0, Filter to 0. Set control in AUTO. Set the plot function for the proper range to record the PV over an appropriate time base such as one hour. 2. The SP is set to the desired control point.
8.2.3 OUTPUT FILTER There is no tuning step for the Output Filter. Adjusting the PID without the Filter gives the most accurate response of the control function of the PID modes. The Output Filter may be turn on anytime so desired. The number is increased as necessary to reduce cycling of the control output signal, thus reducing the cycling of the PV. Some typical settings of the Output Filter is 2, 4, 8, 12, and 15.
car speed started to slowly increase. She slowly backed off the pressure to the gas pedal, trying to maintain the 30 mph. This is known as reset, as she was resetting the engine speed to maintain 30 mph with changing load conditions. This is the RESET FUNCTION. The little ole lady now was very close to home and had turned off the highway she was on. A couple of blocks in front of her, she could see the traffic light was green. As she was watching, the light turned yellow and then went to red.
9.0 SOFTWARE ANAFAZE offers turn key software for IBM PC and compatible computers. The present software includes: ANASOFT-32 Measurement and Control ANASOFT-32-RS Measurement and Control with Ramp and Soak ANASOFT-32-CP Measurement and Control with Carbon Potential 9.1 ANASOFT-32 ANASOFT-32 is a menu driven program that operates up to 3 ANAFAZE SYSTEM 32 units using an IBM PC or compatible computer. It provides a summary screen with color graphic displays of system operating conditions.
the profile is selected the stored ramp and soak recipe for each loop is automatically setup. Accurate Recipe Tracking: The ramp and soak software provides special alarms and warnings in addition to the standard features of ANASOFT. Tolerance levels are used for guaranteed soak, process warnings, and process alarms. Guaranteed Soak: An independent tolerance band can be entered for each recipe segment.
implement your entire turn key hardware and software system. Please contact your local representative or ANAFAZE directly for a quotation. 10.0 SOFTWARE COMMAND STRUCTURE The SYSTEM 32 will respond to commands according to the following format. The commands generally follow the specifications of ANSI X3.28-1976. The structure is outlined below: 10.1.
10.4.1 Processor Reset This Error Code is returned after : Power-up reset The watchdog timer resets the Master processor The Master processor resets the Slave processor 10.4.2 Command Error This Error Code is returned when the A32PID receives a command that is not a Block Read or a Block Write. 10.4.
10.6. Input Types The following one byte codes designate the various input types accepted by the SYSTEM 32: Code -----------00 01 02 03 04 05 06 07 Input Type --------------Linear (0-60 mV) J Thermocouple K Thermocouple T Thermocouple [ Spare ] [ Spare ] RTD Frequency (Pulse Counter) 10.7. Output Types Output type codes are one byte hexadecimal designations formed by setting the individual bits, as explained below, to their proper state.
The following examples show the output code for specific output types: Output Configuration ............................................................................ Hex Code DZC Digital Output, Automatic control ............................................................... 00 Time Proportioned Digital Output, Automatic control ......................................... 01 Analog output, Automatic control.........................................................................
11.0 TROUBLE SHOOTING INFORMATION These four items must work together to operate the SYSTEM 32: The SYSTEM 32 The computer including the RS-232 or other serial interface The communications link The computer software If the system does not work on initial start up check the SYSTEM 32 indicator lights, the computer, and the serial link. 11.1 Computer Problems The computer can be checked by running standard programs that use the display and the printer. The serial interface must be functioning.
the Edit or Run mode. Select the Run mode. If the SYSTEM 32 does not answer, a communications error message will appear on the display [see 11.3 and 11.4]. 11.3 Communications Problems If the computer is functioning properly [section 11.1] then the communication interface, cables and connections must be checked. A number of problems have been traced to bad cables or connections. 11.3.
If the green light is on, then the orange light light is a communications indicator. The orange light will appear whenever the PIOM has decoded a communication containing the address of the PIOM as set in the DIP switch. Thus the conditions for establishing the orange light in the presence of the green light are: 1) PIOM working. 2) Host and PIOM set at the same BAUD rate. 3) PIOM address switches set correctly. 4) Host sending out proper communication containing correct address.
Verify that you are using the COM 1 serial port on your computer. Anasoft assumes this to be the active communications port. Verify the wiring connections between your computer and the Anafaze controller. For RS-232, only three wires are (Rx, Tx and Gnd) are necessary to communicate with the controller. Check the hardware communications option that was specified when you ordered your controller.
