LG GLOFA-GM Series User Manual page 331

Chapter 10 Installation and Testing operation
10.2 Maintenance and Check
To keep this communication module always as optimized, perform daily and regular check.
10.2.1 Daily check
Daily check to perform is as described as below.
[Table 10.3] Daily check items
Check item
Cable connection status
Module connection status
System operation LED
(7: SYS-RUN)
Channel operation LED
(0: RS-232C RUN
8: RS-422/485 RUN)
Communication error LED
LED
(5: RS-232C ERR
display
13: RS-422/485 ERR)
TX/RX LED
(1/2: RS-232C TX/RX
9/10:RS-422/485 TX/RX)
System error LED
(15:SYS-ERROR)
Check contents
Cable loosened Shall not be loosened
Module tightening
Shall not be loosened
screw loosened
Dimly On Abnormal if Off or flashing brightly
checked -while interfacing with CPU
Only if channel active LED lights On,
On checked data is normally sent/received
(If Off, communication stopped)
Abnormal if flashing
Off checked
(parameter setting or cable abnormal)
Abnormal if Off
Flash checked
(hardware of module abnormal)
Off checked System abnormal if flashing
10-8
Criteria
Tighten cable
Tighten module
screw
See Appendix
See Appendix
See Appendix
See Appendix
See Appendix
Action to take