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Commands and Description:
Sending Alarm SMS
Commands
(Hex)
1. The SMS-531 receives the Modbus command then sends the alarm
message.
2. The content of the alarm SMS is "On Message" of Alarm Channel0
Description
message.
3. The alarm SMS would send to the defined phone groups.
The phones defined in the group0 would receive the SMS. The content of
Result
the SMS is "Channel0 ON"
Command Format:
Send the alarm SMS
Byte 0
Byte 1
Byte 2 ~ 3
Command
Byte 4 ~ 5
Byte 6 ~ 7
Byte 0
Byte 1
Correct
Byte 2 ~ 3
Response
Byte 4 ~ 5
Byte 6 ~ 7
Byte 0
Byte 1
Error
Response
Byte 2
Byte 3 ~ 4
Command 01 05 00 00 FF 00 8C 3A
Response 01 05 00 00 FF 00 8C 3A
The Modbus Address of the SMS-531
Function Code = 0x05
Alarm Channel
=0xFF00, Sending the field content of "On Message".
=0x0000, Sending the field content of "Off Message".
CRC-16
The Modbus Address of the SMS-531
Function Code = 0x05
Alarm Channel
=0xFF00 or =0x0000
CRC-16
The Modbus Address of the SMS-531
= 0x85
Error Code
06: Buffer overflow
CRC-16
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SMS-531 User's Manual v1.1
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