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Troubleshooting
Item Trouble state
1
EXT LED is off
2
STA is always on
The GT-531 Series Utility can not
3
connect to SMS-531
4
Can not receive the SMS
The defined phone received an
5
abnormal SMS
The SMS-531 is not replied by
6
Modbus command.
Can not hear the voice alarm from
7
the SMS-531
SMS DBS could not received the
8
SMS from SMS-531
Technical Support
If you have problems about using the SMS-531, please contact ICP DAS
Product Support.
Email:
Service@icpdas.com
Solution
Please check the external power and wire connection.
1. Check SIM card.
2. Check Antenna.
3. Check the 3G signal strength.
1. Check STA LED blinking every 1 sec.
2. Check COM port wire connection.
Please confirm the transmitter's phone number is in the
groups.
The SMS-531 support only Unicode SMS. Confirm the
defined SMS content is Unicode.
1. Confirm the wire connection.
2. Confirm the Modbus ID of the SMS-531.
3. Confirm the COM Port settings.
Confirm the SD card is normal and the voice file is in it.
User must add "ALARM;" to the start of the short message.
SMS-531 Quick Start v1.0 2013/01
8/8
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