APPENDICES APPENDIX
Appendix 5 Operation Image and Data Structure of Predefined Protocol
521
A
Appendix 5 Operation Image and Data Structure of
Predefined Protocol
Operation image of each communication type of protocol
In the predefined protocol function, communication with target devices is performed through the communication type "Send
only", "Receive only", or "Send & receive". This section explains the respective operation images.
When communication type is "Send Only"
The specified packet is transmitted once.
The operation image of "Send only" is as follows.
■Normal completion
■Error completion (transmission monitoring timeout error)
Example of setting
Standby time: 0, Number of send retries: 0, Monitoring time: other than 0
Transmitted data
Tar ge t
device
Terminator
C24
Data
Command Station No.
Header
CPU
module
Execute dedicated instruction
(G(P).CPRTCL)
Completion device
OFF at normal completion
Status display device
at completion
Send packet
C24
Target device
Send packet
Error occurred
CPU
module
Execute dedicated instruction
(G(P).CPRTCL)
Completion device
ON at error completion
Status display device
at completion
t: Transmission waiting time
C24
Cannot send a packet
Target device
To Next Page
Loading...
