Allen-Bradley Logix5000

528 Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Chapter 13 Special Instructions (FBC, DDT, DTR, PID)
Relay Ladder
Structured Text
PID(master,pv_master,0,cv_master,0,0,0);
PID (slave,pv_slave,0,cv_slave,master,0,0);
Control a Ratio
You can maintain two values in a ratio by using these parameters:
· Uncontrolled value
· Controlled value (the resultant setpoint to be used by the PID instruction)
· Ratio between these two values
Relay Ladder