Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 55)

Programming
Chapter 3
3Ć12
W01 B12 Binary/BCD Format. [LE] Reset to 0 selects the 4-digit
BCD (4095 maximum) format. Set to 1 selects the 12-bit are listed
in Table 3.B.
Table 3.B
Binary/BCD Format Words
Word Title Word Title
W05
W09
W10
W12
W16
W17
Set Analog Output 1
Set Process Variable 1
Set Feedforward Input 1
Set Analog Output 2
Set Process Variable 2
Set Feedforward Input 2
W63
W64
W66
W70
W71
W73
Read Loop 1 Output
Read Analog Input 1
Read Tieback Input 1
Read Loop 2 Output
Read Analog Input 2
Read Tieback Input 2
W01 B11 Set Point Format. [LE] Reset to 0 selects 4-digit BCD
(4095 maximum) format for set point 1 in word W06 and set point 2
in word W13. Set to 1 selects the 12-bit binary (4095 maximum)
format. If scaling has been selected by B16 = 1 in word W30 for
loop 1 or in W50 for loop 2, the 4-digit BCD value has the data
format of 9999.
W01 B10 Soft Fault Reset. Reset to zero holds the module in soft
fault mode until this bit is set to 1. Set to 1 allows recovery from the
soft fault mode after the fault is corrected. Soft fault mode is
signified by W58 B10 = 1 and is indicated by the flashing
STAND-ALONE yellow LED on the PID module. The soft fault
mode of operation is selected by bits B15, B14, B13 in word W19
for loop 1 and W39 for loop 2.
W01 B07 Loop Time/Diagnostic. Reset to 0, causes word W60 to
report loop update time. Set to 1 causes word W60 to report error
codes. The upper byte of word W 60 reports dynamic block error
codes. The lower byte reports error codes and loop 1 and loop 2
blocks.
W01 B06 Load. Reset to 0 inhibits the load/enter sequence. Set to 1
initiates the load/enter sequence.
When the load bit is set, the loop constants are loaded into the
module’s buffer. They are not used until the enter bit is set at the
completion of a load/enter sequence. The same applies to the four
bits in the master control word W01 B15, B14, B12, B11 designed