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－１１６－
19. HARDWARE CHECK
19.7 Communications IF 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 RS-422A RS-485
Short SD and RD terminals.
Short SDA and RDA terminals.
Short SDB and RDB terminals.
Open circuit.
(No need to short.)
S
A
RA
SG
S
D
R
D
SG
Shorted
SDA
SDB
RDA
RDB
SG
Shorted
Shorted