RMG TME 400-VM Operating Manual page 90

APPENDIX
The TME 400 recognizes the following Modbus commands:
(03 Hex) Read Holding Registers
(06 Hex) Preset Single Register
(10 Hex) Preset Multiple Regs
(08 Hex) Subfunction 00 Hex: Return Query data
TME 400 Exception Codes
86 01 Illegal Function
02 Illegal Data Address (register not available)
03 Illegal Data Value (register not writable or incorrect value)
Example (Modbus query/response):
Manual TME400-VMF · EN11 · January 22nd, 2024
Query:
Start Char
Slave Address
Function
Starting Address Hi
Starting Address Lo
No. of Points Hi
No. of Points Lo
LRC
carriage return
line feed
Response:
Start Char
Slave Address
Function
Byte Count
Data Hi (Reg 2000)
Data Lo (Reg 2000)
Data Hi (Reg 2001)
Data Lo (Reg 2001)
LRC
carriage return
line feed
Send character
:
01
03
07
CF
00
02
24
cr
lf
Receive character
:
01
03
04
3F
80
00
00
39
cr
lf
2000-1
see below
see below
see below
see below