Technical data

RS-422 Connections
Manual Documentation Number: ESP904-4513m Appendix B 73
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax [phone] – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph [phone] – Fax [phone] – www.bb-europe.com
Figure 65. Loopback Connections for RS-422
The RS-485 Connections are half duplex, either Receive or Transmit, so
another half duplex device must be used to check operation.
Figure 66. RS-422 Connection with No Flow Control