Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 278)

16–13 PCCC Host Commands
Publication 2755-833
0 STS= 00H
High Byte Low Byte
MSB LSB
1
3 2
Command Replies
CMD Reply = 48H
TNS
If the AUX port is not set to manual data entry mode (CONFIG
jumper is open), the LCD will display the message but not the AUX
terminal. The command returns a status of 01H.
If the decoder has not processed the previous text message, the
command returns a status of 02H indicating the command failed
because the display buffer was not available.
Hold Discrete Output Open or Closed
Allows the host to control the discrete outputs (regardless of their
”normal” state) for a set duration. When the specified duration
expires, the output reverts to its previous state.
If a normally open (or closed) output is held open (or closed), the
state of the output will not change due to other conditions.
0
5
STS= 00H
TNS
High Byte Low Byte
LSB
1
3 2
6
CMD= 08H
Holds Discrete Output Open or Closed
Command Address = (see Appendix A) 4
7 Pulse Duration (in milliseconds)
MSB
0 STS= 00H
TNS
High Byte Low Byte
MSB LSB
2
Command Reply
1
3
CMD Reply = 48H
Appendix A lists the command addresses for holding a discrete
output (1-8) open or closed. Valid duration values (in milliseconds)
are 0010 through 9999. Note that the duration must be expressed in
hex format (0A through 270F hexadecimal).