COTRUST CTH200 Series - Page 195

CTH200 Series PLC User Manual
185
Control word bit address definition:
Bit
Setting
Note
0
0
PID stop
1
PID run
1
0
Integral always work, Kp do not self-tuning
1
Integral separate Kp self-tuning
2
0
PID unipolar output
1
PID bipolar output
3
0
Reserved
1
Reserved
4
0
Integral works
1
Integral does not work
5
0
Differential works
1
Differential does not work
6
Reserved
7
Reserved
Status word bit address definition:
Bit
Setting
Note
0
0
No disconnection error
1
Disconnection error
1
0
Not implemented self-tuning
1
Self-tuning
2
0
No self-tuning error
1
Self-tuning error
3
0
No heating
1
Heating
4
0
No cooling
1
Cooling
5
0
PID stop
1
PID run
6
Reserved
7
Reserved
【Example】
Take a temperature zone as example, and the system and I/O configuration table is as follows:
System
configuration
CPU226L+231-7PD32
Temperature acquisition using four - way
thermocouple module
Control
request
1 Only heating-output, no cooling-output
2 Request self-tuning
3 K thermocouple
I/O distribution
Q0.0
Heating-output
AIW0
Temperature input
K thermocouple
M0.0
PID run/stop bit
M1.0
Self-tuning start bit