8/17/2017 1:31 PM | |
Joined: 6/17/2011 Last visit: 12/6/2023 Posts: 5 Rating: (0) |
Hi, mishtavince USB PC/PPI cable does not have serial comm-port features. They act like the PLC's built in USB chip. So, you can't define the comm-port number for the PLC. The ways to solve your difficulty are: 1> Use USB-RS485 adapter and connect A+,B- wires to pin 3 and 8 of PLC's comm-port, respectively. You can view Pin-out designation from PPI cable manuals. (This method will give you some risk. Be careful. Don't do it if you don't know about communication phenomena) 2>Buy seperately, USB-RS232 adapter and serial PC/PPI cable. (This method has low risk. But cost you more money.) Best luck may come to you. |
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