Example
Configuration of the example
Hardware configuration
This application uses: l l l a TSX 37-10 PLC a TSX DMZ 28DTK discrete I/O module.
a TSX AEZ 414 analog input module,
The configuration is thus as follows:
1 5 7 0
TSX
3710
3
AEZ
414
DMZ
28DTK
Assignment
2 4 6 8
The discrete output %Q2.0 is assigned to the control the reheater.
The discrete output %Q2.1 is assigned to the control the pump.
The discrete outputs %Q2.2, %Q2.3 and %Q2.4 are assigned to alarms.
The bit %M0 is used to select the process controller operating mode AUTO/MANU.
The discrete inputs %I1.1 and %I1.2 are used to modify the setpoint value in AUTO l l mode and the output value in MANU mode according to the following algorithm:
%I1.1 = 1 increase of 0.1 % per cycle,
%I1.2 = 1 decrease of 0.1 % per cycle.
The input %I1.3 supplies information on the state of the pump.
The input %I1.4 is used to control the pump.
The input %I1.6 controls the display on the CCX 17.
%IW3.0 to %IW3.3 are the values of the analog inputs.
394
TLX DS 37 PL7 xxE
Example
Diagram of the process control loop
PID process controller action is in the INVERSE direction (an increase in the process value must correspond to a decrease in the output value).
PID1
PWM
Water temperature
Air temperature
Motor overheating
control
Reheater overheating control
Sonde
Pt100
Sonde
Pt100
Th J
Th K
TSX AEZ 414
%IW3.0
%IW3.1
%IW3.2
%IW3.3
Setpoint calculation
Mes
Set
+
-
PID
OUT
AUTO
MANU
To the heating resistance %Q4.0
TLX DS 37 PL7 xxE
395
Example
Configuration Rack configuration
1
2
Slot
0
3
Family
Processors
Discrete Inputs
Discrete Outputs
Analog
Product reference
TSX 3710
TSX DMZ 28DTK
TSX AEZ 414
Channel parameters for TSX DMZ 28DTK module
1
2
Channel Type of channel Address
0 Input %I1.0
Input
Input
%I1.1
%I1.2
5
6
3
4
Input
Input
Input
Input
7 to 16 Inputs not used
%I1.3
%I1.4
%I1.5
%I1.6
Symbol
-
CONSIG_INCREM
CONSIG_DECREM
ETAT_POMPE
ACT_POMPE
-
VALID_DOP_REG
Task
MAST
MAST
MAST
MAST
MAST
MAST
MAST
0
1
2
Output
Output
Output
%Q2.0
%Q2.1
%Q2.2
COMM_RECHAUF
COMM_POMPE
ALARM_TEMP_HAU
T
MAST
MAST
MAST
ALARM_TEMP_BAS MAST
ALARM_DEF_REG MAST
3
4
Output
Output
5 to 12 Outputs not used
%Q2.3
%Q2.4
Channel parameters for TSX AEZ 414 module
Range Scale Min.
0
1
Chann el
2
3
Address Symbol
%IW3.0
%IW3.1
%IW3.2
%IW3.3
TEMP_EAU
TEMP_AIR
SURCHAUF
_MOTEUR
SURCHAUF
_RECHAUF
Pt100
Pt100
Thermo J
%..
%..
%..
Thermo K %..
0
-200
0
0
Max.
Unit
500
800
°C
°C
1000 °C
1000 °C
Filtering Task
0
0
0
0
MAST
MAST
MAST
MAST
396
TLX DS 37 PL7 xxE
Bit
Internal (%M): 256
System (%S): 128
Configuration of bits, words and function blocks
Words
Internal (%MB,%MW,%MD,%MF): 512
System (%SW,%SD): 128
Common (%NW): 0
Constant (%KB,%KW,%KD,%KF): 128
Function blocks
Series 7 timer(s) (%T): 0
Timer(s) (%TM): 64
Monostable(s) (%MN): 4
Counter(s) (%C): 32
Register(s) (%R): 4
Drum(s) (%DR): 2
Example
TLX DS 37 PL7 xxE
397
