13. Technical Appendix - Interfaces
13.4. Serial Port (COM4) RS422 (Option)
Pin Signal Name
1
TXD- (Transmit Data -)
2
RXD+ (Receive Data +)
3
TXD+ (Transmit Data +)
4
RXD- (Receive Data -)
5
GND
(Signal Ground)
6
RTS-
(Request to Send -)
7
RTS+ (Request to Send +)
8
CTS+ (Clear to Send +)
9
CTS-
(Clear to Send -)
13.5. Serial Port (COM4) RS485 (Option)
Pin Signal Name
1
TXD- (Transmit Data -)
2
RXD- (Receive Data -)
3
NC
4
NC
5
GND
(Signal Ground)
6
TXD+ (Transmit Data +)
7
RXD+ (Receive Data +)
8
NC
9
NC
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9-pin D-SUB Plug (optional male or female)
9-pin D-SUB Plug (optional male or female)
V Panel Express –User's Guide (V1.01)
45