Bb-electronics ESP904 Manuale Utente Scaricare il pdf (Pagina 37)

RS-422 Connections

Manual Documentation Number: ESP904-0504 Appendix B 63

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Figure 49. 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 50. RS-422 Connection with No Flow Control

RS-422 Connections

64 Appendix B Manual Documentation Number: ESP904-0504

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

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Bb-electronics ESP904 Manuale Utente Pagina 37