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7/18/2008 3:56 PM | |
Joined: 4/23/2008 Last visit: 4/25/2023 Posts: 31 Rating: (0) |
Hi Helmut_13. And, not, i'm not using a PC/PPI cable because my modem supports RS485 communication, so i am using a cable that only connects the TX+-, RX+- and GND signals to each side. See attached the cable i'm using (resistor just in plc side because in the modem it is activated via dip switches) this configuration, works ok using 19200 bps in the 222. Now i tested replacing the cpu 222 by a 224, at 9600 bps.. and it works!, so i think may be a problem of the 222, could it be?
Attachmentcable.pdf (151 Downloads) |
5/25/2009 6:51 PM | |
Posts: 2 Rating: (0) |
Hi darkbits, will this cable work without the terminator at the PLC ? you have used 120ohms, what is the amps for this resistor? |
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