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ICP DAS, ZT-2017 and ZT-2017C AI Series User Manual, Version 1.0.1
Page 124
Copyright © 2012 by ICP DAS Co., Ltd. All Rights Reserved.
A.5
32 (0x20) Reading the Firmware Version Information
Description
This sub-function code is used to read the firmware version
information for a module.
Request
Byte Description
Length Value
00
Address
1
1 to 247
01
Function Code
1
0x46
02
Sub-function
Code
1
0x20
Response
Byte Description
Length Value
00
Address
1
1 to 247
01
Function Code
1
0x46
02
Sub-function
Code
1
0x20
03
Major Version
1
0x00 to 0xFF
04
Minor Version
1
0x00 to 0xFF
05
Reserved
1
0x00
06
Build Version
1
0x00 to 0xFF
Error Response
Byte Description
Length Value
00
Address
1
1 to 247
01
Function Code
1
0xC6
02
Exception Code
1
Refer to the Modbus standard for more
details