Tables of Content
Q01: How can I confirm that my SIM card can support GTP-541M?................................3
Q02: Unable to register troubleshooting (4G light is abnormal) ...................................... 3
Q03: How to switch between different functions? ............................................................ 3
Q04: DI function is abnormal, how to solve it ................................................................... 5
Q05: No action when using the Uart software to the ModBus command under the…...6
Q06: Why can't I log in to the Utility software? ................................................................. 6
Q07: What is the difference between Level Trigger and Edge Trigger mode? .............................. 7
Q08: Can foreign numbers be used? ................................................................................. 7
Q09: After triggering the alert message, the phone received multiple message ........... 7
Q10: Can the GTP-541M use the NC/NO trigger SMS at the same DI? ............................ 7
Q11: I send a ModBus command to the GTP-541M via the PLC and receive a duplicate
message ............................................................................................................................... 8
Q12: The format of the voice file I used has been determined to be the same as that
in the manual. Why is there still no voice when receiving the voice alarm? ................. 8
Q13: GTP-541M has used the utility to set parameters and write them successfully,
but why can't the SMS alarm be triggered? ...................................................................... 8
Q14: Writing parameters using the utility fails. ……………………………………………..8
Q15: The alert message was not received. ...................................................................... 8
Q16: Can I change the typesetting of variable SMS content?.........................................8
Q17: After a period of time, the 4G light will be on without flashing. …………………..8