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Guide to MODBUS-RTU registers for Gateway PRO
© Copyright 2021 Caleffi
Transmission
Type of check
BUS
MODBUS–RTU
RS-485
Id default = 1
MODBUS-RTU functions:
Function 0x03 - Read Holding Registers
Used to read one or more registers (the size of each parameter is 16 bit).
Function 0x06 - Write Holding Registers
Used to write one or more registers (the size of each parameter is 16 bit).
List of available MODBUS-RTU registers
1. Constant parameters
2. List of Gateway parameters
3. List of devices by zone
4. Zone management
5. Clock data
6. Description of available alarms
1 - Constant parameters
Table A - DEVICE TYPES
Value
1
Comfort Control
2
3
4
6
Gateway PRO
contact diagram
3-MICRO SIM
1-BOILER
CONTACT
2-MODBUS
5-ETHERNET
4-USB C
ELECTRIC
SUPPLY
Baud Rate
Data bit
9600
8
Description
Sensor PRO
Sensor
Gateway
Gateway PRO
MODBUS-RTU connections
GND
A (D+)
B (D-)
RS485/MODBUS-RTU
Parity
Stop bit
NONE
1
Table B - QUICK FUNCTIONS
Value
Description
0
Auto
1
Eco
2
Holiday
3
Manual
4
Off
5
Boost
6
Cleaning
7
Forced OFF (priority)
8
Different functions
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code 215015/215015 BLK
BMS
Handshake
None
EN
Unit Load
1/8 UL
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