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

 

 

 

Shorted

 

 

Shorted

Shorted

 

 

 

 

 

 

SD

RD

SG

SDA SDB RDA RDB SG

SA RA

SG

 

 

 

 

 

Short SD and RD terminals.

Short SDA and RDA terminals.

Open circuit.

Short SDB and RDB terminals.

(No need to short.)

 

 

 

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Page 120
Image 120
Omega RD200, RD2800 Communications if Check, RS-232C RS-422A RS-485, Short SD and RD terminals Short SDA and RDA terminals