Communications If Check - Omega RD2800 Series User Manual

19. HARDWARE CHECK
This check is only available for the communications interface (option). It checks the communications function by
displaying the signal received after transmitting it.
1
Connections
Except for RS-485, short the transmission and reception terminals.
RS-232C
Shorted
SD RD SG
Short SD and RD terminals.

19.7 Communications IF Check

RS-422A
Shorted
Shorted
SDA SDB RDA RDB SG
Short SDA and RDA terminals.
Short SDB and RDB terminals.
－１１６－
RS-485
SA RA SG
Open circuit.
(No need to short.)