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I need to make a PC-->PLC programming cable so I can program a GE 90-30 PLC with either VersaPro or LogicMaster. I have the wiring diagrams for the RS422 DB15M end and the DB9F RS232 end.
I'm confused with the something on the diagram; maybe one of you can help me unconfuse myself.
I know there are positive (+) and negative (-) lines for RTS, CTS, RD and SD on the RS422 end which will connect to the PLC. Of course, the RS232 end doesn't have positive and negative for those. Does this have something to do with connecting to the +5VDC line on the RS422 port? (I've attached a copy of the diagram for the RS422 end I've been working with)
How do I compensate for this? Is making a cable a lost cause, and should I give up any hope on making this little device?
Please help if you can,
Thanks,
Nate
[email protected]
I'm confused with the something on the diagram; maybe one of you can help me unconfuse myself.
I know there are positive (+) and negative (-) lines for RTS, CTS, RD and SD on the RS422 end which will connect to the PLC. Of course, the RS232 end doesn't have positive and negative for those. Does this have something to do with connecting to the +5VDC line on the RS422 port? (I've attached a copy of the diagram for the RS422 end I've been working with)
How do I compensate for this? Is making a cable a lost cause, and should I give up any hope on making this little device?
Please help if you can,
Thanks,
Nate
[email protected]