LG GLOFA-GM Series User Manual page 56

Chapter 4 Performance specification
1) Module's LED status before communication starts
RUN/BPS
TX/BPS
RX/BPS
ACK/DATA
NAK/PARITY
ERR/EVEN-ODD
MODEM/STOP
SYS-RUN
RS-232C
2) Module's LED status during normal communication
RUN/BPS
TX/BPS
RX/BPS
ACK/DATA
NAK/PARITY
ERR/EVEN-ODD
MODEM/STOP
SYS-RUN
RS-232C
Remark
[Note1] ACK and NAK are turned ON if normal response is transmitted when communicating in dedicated mode.
Refer to Chapter 7 for details of dedicated mode in this user's manual.
3) Troubleshooting for module: If module's LED status is abnormal differently as above, refer to checklist in
[Table4.4] to shoot the trouble.
G4L-CUEA
RUN/BPS
TX/BPS
RX/BPS
ACK/DATA
NAK/PARITY
ERR/EVEN-ODD
RS-485/STOP
SYS-ERR
RS-422
G4L-CUEA
RUN/BPS
TX/BPS
RX/BPS
ACK/DATA
NAK/PARITY
ERR/EVEN-ODD
RS-485/STOP
SYS-ERR
RS-422
RUN/BPS : always 'ON'
MODEM/STOP : always 'ON'
SYS-RUN : dimly 'ON'
RUN/BPS : always 'ON'
TX/BPS : if in transmission, 'ON'
RX/BPS : if in receiving, 'ON'
ACK/DATA : refer to [Note1]
MODEM/STOP : always 'ON'
SYS-RUN : dimly 'ON'
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