Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 230)

Summary Word and Bit Tables
Appendix D
DĆ9
Table D.D
Control Word A W18(W38)
Bit Title Status
B17 Block identifier 0 in W18
1 in W38
B16 Block identifier 0 in W38
1 in W18
B15 Source of PV 0=analog hardware input
1=PC processor, W09(W16)
B14 Square root of PV 0=reset
1=enable
B13 Error polarity 0=SP-PV direct acting
1=PV-SP reverse acting
B12 Error limit 0=rest
1=enable EMN in W21(W41) and EMP in W22(W42)
B11 Dead band 0=reset
1=enable DB in W23(W43)
B10 Maximum integral term limit 0=reset
1=enables VIMAX in W26(W46)
B07,B06 Proportional term error 00=E
01=2/3E + 1/3E@
B05,B04 Integral term error 10=1/3E + 2/3E@
11=E@
B03 Derivative term error 0=error
1=PV
B02 Maximum derivative term limit 0=reset
1=enables VDMAX in word W27(W47)
B01 Hold PID calculation 0=reset
1=hold VPID last value
B00 Hold bias 0=reset
1=hold BIAS last value