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Modbus TCP Slave Send SMS example (view source)
Revision as of 13:47, 31 January 2023
, 13:47, 31 January 2023no edit summary
The first 10 registers are reserved for the phone number ('''1 register = 4 symbols''') additionally you will require to put in front '+' which is equal to 00 here. If your number (together with 00) does not take 10 registers we will require you to fill out the left registers with 0 values, that's why we use the '''\u0000 symbol''', which means 0 value.
The first 10 registers are reserved for the phone number ('''1 register = 4 symbols''') additionally you will require to put in front '+' which is equal to 00 here. If your number (together with 00) does not take 10 registers we will require you to fill out the left registers with 0 values, that's why we use the '''\u0000 symbol''', which means 0 value.
Here we will explore two examples, one for the ASCII data type and one for the HEX.
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'''Example Message request:'''
'''Example Message request for ASCII:'''
003706xxx1594\u0000\u0000\u0000\u0000\u0000\u0000\u0000test
003706xxx1594\u0000\u0000\u0000\u0000\u0000\u0000\u0000test
'''Explanation:'''
'''Explanation:'''
* 00 = + symbol
* '''00''' - + symbol
* 3706xxx1594 = phone number
* '''3706xxx1594''' - phone number
* \u0000\u0000\u0000\u0000\u0000\u0000\u0000 - our number only takes up to 3 registers, all other registers will be filled with 0 value
* '''\u0000\u0000\u0000\u0000\u0000\u0000\u0000''' - our number only takes up to 3 registers(4 symbols = 1 register), all other registers will be filled with 0 value
* test - the message that will be sent
* '''test''' - the message that will be sent
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'''Second example Message request for HEX:'''
30 30 33 37 30 36 78 78 78 31 35 39 34 00 00 00 00 00 00 00 74 65 73 74
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'''Explanation:'''
* '''30 30''' - equals to 00(+ symbol)
* '''33 37 30 36 78 78 78 31 35 39 34''' - equals to 3706xxx1594 number
* '''00 00 00 00 00 00 00''' - our number only takes up to 3 registers(4 symbols = 1 register), all other registers will be filled with 0 value
* '''74 65 73 74''' - equals to 'test' in HEX
For this example you will need to use ASCII to HEX converter which will convert your number and message to HEX format, the one used in this example was: https://www.utilities-online.info/ascii-to-hex
Example of the conversion:
[[File:Networking rut configuration modbus tcp master ascii to hex v1.png|border|class=tlt-border|1100px]]
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