CMM366A-3G Cloud Monitoring Communication Module User Manual
CMM366A-3G Cloud Monitoring Communication Module 2017-12-23 Version 1.0 Page 16 of 17
8 TROUBLESHOOTING
Table 8
– Fault Finding
Symptoms
Possible Solutions
Controller no response with
power.
Check power voltage;
Check controller connection wirings.
GPRS/3G Indicator Not Light
Check SIM card is inserted or not;
Check GPRS antenna is connected or not.
GPS Not Gained Location
Check GPS parameters are enabled or not;
Check GPS antenna is connected or not and placed outdoor or not.
RS485
Communication
Abnormal
Check connections;
Check RS485 port is enabled or not;
Check settings of genset ID and baud rate are correct or not.
Check RS485’s connections of A and B is reverse connect or not.
RS232
Communication
Abnormal
Check connections;
Check RS232 port is enabled or not;
Check settings of genset ID and baud rate are correct or not.
LINK
Communication
Abnormal
Check connections;
Check LINK port is enabled or not;
Check settings of genset ID and baud rate are correct or not.