Installation manual

3/10
3
3.1
Presentation,
fonctions
Modicon TSX Micro
automation platform 0
Process control of semi-continuous processes
The CCX 17 industrial operator panel displays and controls all the PID controller
parameters which can be modified without having to program the TSX Micro or
Premium PLC application program.
The PID_MMI man-machine interface function, included in the PL7 Junior software,
provides an application program on the CCX 17 industrial operator panel for
controlling and adjusting PID loops.
It enables the CCX 17 operator panel to manage:
b Selection of a PID loop.
b Display and control of that PID loop.
b Adjustment of the PID loop parameters.
This man-machine interface function is easily installed for any man-machine
interface application on the CCX 17 operator panel. The three preconfigured screens
enable the required operations to be performed on any PID controller.
The CCX 17 operator panel can manage up to 9 PID controllers. Installation of the
man-machine interface function is simple and is performed as follows:
b The PID_MMI function is activated on each scan of the TSX Micro or Premium
PLC (unconditional call-up).
b A single call-up of the PID_MMI function manages all the PID loops in the
TSX Micro or Premium PLC -application.
The PID function sets a PID serial/parallel algorithm and works out the control signal
on the basis of:
b A measurement sampled by an input module.
b The setpoint value fixed either by the operator or by the program.
b The values of the various controller parameters (KP, TI, TD, sampling period, etc).
The analogue control signal from the controller can be processed:
b Either directly by a TSX Micro or Premium PLC analogue output module
connected to the actuator.
b Or via the PWM or SERVO adaptations depending on the type of actuator for
discrete control.
The PWM function provides the required adaptation to control a pulse width
modulation actuator via a discrete output.
The SERVO function provides the required adaptation to control a motorised
actuator with “UP/DOWN” control provided by a discrete output. It has a position
feedback input to execute servo control.
These two functions are installed in cascade on the PID controller function.
Presentation
Process control function
Controller
KP TI
TD
PWM
PWM
SERVO
PID
Output“UP”
Output “DOWN”
Discrete servo
control
Analog control
Output Discrete control
Measure
Setpoint
4…20 mA
Thermocouple
Probe
Input position
feedback
Inputs
Output
D
escription:
p
age 3/12
Characteristics:
pages 3/11 and 3/12
References:
page 3/13
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: [phone] ● www.stevenengineering.com
efesotomasyon - telemecanique inverter