glenncovington
Lifetime Supporting Member
Need some help. I have searched the archives on this topic, but didn't find what I need. I am trying to establish communication with slc 100/150 plcs. Our original RS232 to RS422 converter from AB was made by B&B Electronics. It went from 25 pin female for the PC connection to a 8 Pin Din round connector for the SLC. It also has an external 12 Vdc power supply.
B&B was unable to identify our old cable, but recommended a model 422PP9TB RS 232 to RS422 converter. I now have the converter, but no pinout on the SLC 8 pin Din connector to know how to wire in the cable to the converter. I found a pinout in the archive, but it doesn't match what I have.
Looking a the front of the 8 pin Din connector numbering the pins clockwise from the key point.
Pin 1 Green Wire
Pin 2 Brown Wire
Pin 3
Pin 4 White
Pin 5
Pin 6 Black
Pin 7
Pin 8 Red
Shield
The new converter has connection for:
TD (A)
TD (B)
RD (A)
RD (B)
GND
+12V
If anyone has worked out the connection before please respond
Thanks in advance.
B&B was unable to identify our old cable, but recommended a model 422PP9TB RS 232 to RS422 converter. I now have the converter, but no pinout on the SLC 8 pin Din connector to know how to wire in the cable to the converter. I found a pinout in the archive, but it doesn't match what I have.
Looking a the front of the 8 pin Din connector numbering the pins clockwise from the key point.
Pin 1 Green Wire
Pin 2 Brown Wire
Pin 3
Pin 4 White
Pin 5
Pin 6 Black
Pin 7
Pin 8 Red
Shield
The new converter has connection for:
TD (A)
TD (B)
RD (A)
RD (B)
GND
+12V
If anyone has worked out the connection before please respond
Thanks in advance.