Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 107)

Programming
Chapter 3
3Ć64
Transfer 8 - The write block transfer must have the enter bit W01 B03 set
to 1. This bit must be set during the initial power-up sequence.
Transfer 9 - The read block transfer will have ready bit W58 B12 reset to
0 and will have the load/enter complete bit W61 B12 and the power-up
complete bit W61 B04 set to 1. This indicates that the PID module has
been programmed and that no errors were detected in the dynamic block
or loop blocks.
After the power-up load/enter sequence, the PID module automatically
sets itself for the next transfer of the dynamic block. Program logic can
immediately initiate the dynamic/status toggle sequence, or it can halt
communication until prompted by a timer and/or SMB error bit.
Table 3.L
Load/Enter Bits
Bit Name Bit Number
load
enter
W01 B06
W01 B03
powerĆup
ready
W58 B13
W58 B12
load/enter complete
powerĆup complete
W61 B12
W61 B04