SIMATIC 505-2571 Program Port Expander User Manual Order Number: PPX:505–8131–1 Manual Assembly Number: 2806135–0001 Original Edition
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MANUAL PUBLICATION HISTORY SIMATIC 505-2571 Program Port Expander User Manual Order Manual Number: PPX:505-8131-1 Refer to this history in all correspondence and/or discussion about this manual.
LIST OF EFFECTIVE PAGES Pages Cover/Copyright History/Effective Pages iii — vii 1-1 — 1-5 2-1 — 2-6 3-1 — 3-3 4-1 — 4-4 A-1 — A-1 Registration Description Original Original Original Original Original Original Original Original Original Pages Description
Contents Chapter 1 PPX:505-2571 Module Description Module Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Chapter 2 2.1 Installing the Module Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Installation Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List of Figures 1-1 PPX:505-2571 Program Port Expander Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Process Monitoring Application Using PCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Attaching a Lap Top PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-4 1-5 2-1 Location of Baud Rate Switches . . . . . . . . . . . . . . . . . . . . . . . . .
List of Tables 2-1 Baud Rate Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 4-1 Troubleshooting Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4 A-1 Physical and Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface This user manual provides installation and operation instructions for the SIMATIC 505-2571 Program Port Expander Module for Series 505 programmable controllers. We assume you are familiar with the operation of Series 505 programmable controllers. Refer to the appropriate SIMATIC user documentation for specific information on the controllers and I/O modules. This user manual is organized as follows: Manual Title • Chapter 1 provides a description of the module.
Chapter 1 PPX:505-2571 Module Description Module Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Features The PPX:505-2571 Program Port Expander Module is a member of the communication family of I/O modules for the Series 505 programmable controllers. The PPX:505-2571 is a single-wide, Special Function module that provides four additional communications ports that function like the program port provided on the CPU front panel. Ports 1 and 2 have an electrical interface that is a subset of RS–232C using a male DB9 connector.
As control systems become more complex and dispersed, the demand for attaching serial devices has increased. Serial devices are typically used to provide operator interface, to run supervisory control and monitoring packages, and to facilitate controller programming support. Most Series 505 controllers today are equipped with two serial ports to accommodate the minimum requirement. However, these ports can be consumed with the supervisory control package and one operator device.
More sophisticated applications may require the monitoring of a large number of variables in the controller. There are a number of third party applications available that may be used to access data from the controller and perform statistical process control, trending, report generation and other applications. These third party applications typically run on a PC or other platform but most all of them communicate to the controller directly through the program port.
Using a notebook PC running the SIMATIC TISOFTapplication, a maintenance engineer can easily make changes in the controller program or adjust timer and/or drum preset values. During start up conditions a PC may be attached to a serial port to aid in the debugging process. The additional ports on the PPX:505-2571 make it possible to access locally the controller. See Figure 1-3.
Chapter 2 Installing the Module 2.1 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Installation Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unpacking the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Configuring the Module . . . . . . . . .
2.1 Getting Started The installation of the PPX:505-2571 Programming Port Expander Module consists of the following steps: Installation Planning 1. Planning the installation. 2. Installing the module into the I/O base. 3. Connecting operator interface devices to the module communication port. 4. Checking the module operation. The PPX:505-2571 requires 5 watts of +5VDC power. Before inserting the module into the I/O base, ensure that the power supply capacity is not exceeded.
Configuring the Module The baud rates for each port may be individually set via DIP switches. In addition, for the RS–232 ports (1 and 2) you can enable or disable hardware handshaking. The PPX:505-2571 is shipped with all DIP switches in the OFF position. This corresponds to a baud rate of 9600 and hardware handshaking DISABLED for ports 1 and 2. NOTE: Unless the device you are attaching explicitly requires hardware handshaking, you should leave hardware handshaking DISABLED.
Getting Started (continued) Inserting the Module into the I/O Base Hold the top and bottom of the bezel and slide the module carefully into the slot, pushing it all the way into the base. If you have inserted the module correctly, you will feel a slight increase in resistance as the module mates with the base backplane connector. Once the module is fully seated in the slot, tighten the captive screws at the top and bottom to hold the module in place.
If you require hardware handshaking for flow control, you should refer to the device documentation for information on connecting the RTS, CTS, DCD, DTR, and DSR lines. The PPX:505-2571 RS–232 port is configured as DTE. In addition, you should set the port DIP switch position 3 to ON (see Table 2-1 and Figure 2-1). NOTE: Most common operator interface devices do not use the hardware handshaking lines; therefore, you do not need to connect them.
Getting Started (continued) In Figure 2-3, the PPX:505-2571 module is installed into slot 1 and I/O base 0. For your particular installation, look in the chart at the slot address occupied by the module in your configuration. If the WX and WY values are the same as those shown in the example above and Special Function = YES then the module is logged into the controller memory and is ready for operation.
Chapter 3 Module Operation Effect of Controller Scan Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The PPX:505-2571 is designed to work with operator interface devices which adhere to the Non–Intelligent Terminal Protocol (NITP). Up to four supported devices may concurrently communicate with the controller. The PPX:505-2571 will provide buffering for the commands from the operator interface and responses from the controller. Commands are sent to the controller in the order they are received; no port has priority over any other port.
The requests are processed during the discrete portion of the controller scan (refer to Chapter 1 of the SIMATIC 545/555/575 System Manual for a discussion of the timeline). Thus, the scan interval to process the requests from the PPX:505-2571 (or any other Special Function module) cannot be lengthened by manipulating the time slices, which affect only the analog portion of the scan. To maximize throughput, the PPX:505-2571 should be placed in the local base with the controller.
Chapter 4 Troubleshooting Module Malfunction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Communications Signal Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Module Response Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Baud Rate Mismatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Malfunction When power is applied to the PPX:505-2571, it first performs a Power On Self Test (POST) to determine if all module components are operating properly. This test takes only a few seconds. When successfully completed, the ACTIVE indicator on the module will be illuminated (on steady). If a problem is detected with the communications section for one of the ports, the ACTIVE indicator will begin blinking at a fast (2 Hz) rate.
Module Response Problems If the XMT indicator does not flash within 2 seconds of receiving a signal (RCV indicator flashes), it indicates that the PPX:505-2571 is not responding to the signal. Refer to the information below for possible causes. Baud Rate Mismatch First, check to ensure that the baud rate settings on both the PPX:505-2571 and the operator interface are set to the same data rate. If you note a problem, set both to the same baud rates and retry.
Table 4-1 Troubleshooting Matrix Symptom Probable Cause Corrective Action Active Indicator light not on. 1. No Power to module 2. Defective module 1. Ensure 5V power is supplied to the rack 2. Cycle power. If ACTIVE indicator does not remain on, replace the module. Active Indicator Flashing Defective module Cycle power. If ACTIVE indicator does not remain on, replace the module. RCV indicator does not flash when attempting to send data from an operator interface device. Defective module.
Appendix A Specifications Table A-1 Physical and Environmental Specifications Number of Concurrent Communications Ports 4 Serial Ports Port Electrical Interface Ports 1 and 2 RS-232-C (subset) Ports 3 and 4 RS-422 Port Baud Rates Individually selectable 1200, 2400, 9600, 19200 Maximum Aggregate Rate 38,400 Baud Communications Parameters Data Bits – 7, Parity – Odd, Stop Bits – 1 Port Connectors Ports 1 and 2 – Male DB9 Ports 3 and 4 – Female DB9 Isolation 1500 VDC channel-to-controller Module
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