LS Industrial Systems GLOFA G7M-DR20U, User Manual

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Appendix 1. System Definitions
App1-7
(5) Stop bit: 1 or 2 bit(s)
(6) Communication channel
•
RS-232C Null Modem or RS-422/485: Select this channel to communicate through GM7U base unit or Cnet I/F
module (G7L-CUEC).
•
RS-232C modem(Dedicated Line): Select this channel to communicate through Cnet I/F module (G7L-CUEB).
•
RS-232C dial-up modem: Select this channel to communicate dial-up modem for modem communication, using Cnet
I/F module (G7L-CUEB)
REMARK
RS-232C modem(Dedicated Line) and RS232C dial up modem communication can be executed under
RS-232C I/F module(G7L-CUEB)
(7) Master/slave: Select master to be major in the communications system.
(8) Time out
•
The value of default is 500ms.
•
Set the maximum cycle time for sending and receiving of the master PLC.
•
It may cause of communication error that lower setting value than maximum cycle time for sending and receiving.
(9) Reading slave PLC status.
•
Select to read GM7U base unit status as slave designated. But do not choose this except for the monitoring of the
slave status. It may cause to drop down the communication speed.
4) Special parameters