How can i connect to the Com4 port of a CFP2020 a rs485 device

[mjair]

i want to conect a multimeter ABB whit 2 wire RS485 Protocol comunication to the Com4 port of a Compact Field point but i doesn´t find the pin distribution at any manual

[NorSa]

mijair,

Thanks for using NI Forums, if you want to post your messages in spanish you can do it in our spanish section. About the confiuration of the pins in the COM4 as RS485 we have what does the ten pins mean:

Pin

1. No connect
2. TXD-
3. TXD+
4. RTS-(HSO-)
5. CTS-(HIS-)
6. RXD-
7. RXD+
8. RTS+(HSO+)
9. CTS+(HIS+)
10. GND

 This information you can see it in

Pag 3-8 of the user manual of the fp 202, I'm giving you the link to it

http://www.ni.com/pdf/manuals/370708b.pdf

Thanks for using the NI Forums, and hope to see you soon.

NorSa

Applications Engineer Latin America