Chapter 7 Communication function
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3)
How to set other company’s communication mode
A) Release On-line connection and let PLC powered off after library writing to Cnet I/F module is completed.
B) Change Cnet I/F module’s mode switch to No. 9 On-line mode and then let PLC powered on for On-line
connection.
C) Select On-line mode change from On-line menu of menu bar to display the following screen for On-line mode
change, where other company’s dedicated mode for RS-232C or RS-422 channel is to be set and then
channel operation and connection steps are to be exactly selected with Write button clicked on to complete
mode change and to start operation in other company’s dedicated mode. if set to stand-alone mode Other
company’s dedicated mode can be operated separately for RS-232C / RS-422 channel with the individual
operation available according to selected mode.
D) In case that operation is switched to other company’s dedicated mode, if LED No.0,1,2 of Cnet I/F module is
On and LED No.15 (No.7 in Gm6 Cnet) flashes in a cycle of 1 sec., library has not been downloaded to flash
memory. Check if communication driver is downloaded.
E) In normal running, set and write basic parameters such as station No., communication speed, etc.
F) Now the operation in other company’s dedicated mode is completed as ready to enable communication in
other company’s dedicated mode via cable connection with applicable channel.
G) Because other company’s dedicated mode is to be operated as a slave only like dedicated mode, it just
responds to request of master station.