Carrier RTU Open v5 Integration Manual page 61

Unsigned Integer (UINT)
Signed Integer (SINT)
Discrete Input (DI)
Discrete Output (DO)
RTU Open v5
Integration Guide
Appendix C: Modbus Protocol Implementation Conformance Statement
0 - 65535
-32768 - 32767
0 = Off, 1 = On
0 = Off, 1 = On
57
3 – Read Holding Register
6 – Preset Single Register
16 – Preset Multiple Register
3 – Read Holding Register
6 – Preset Single Register
16 – Preset Multiple Register
2 – Read Input Status
1 – Read Coil Status
5 – Force Single Coil
15 – Force Multiple Coils
CARRIER CORPORATION ©2019
All rights reserved