Engineering
Modbus registers
3
16 | 22
Siemens
A6V11478123_en_a
Building Technologies
2019-02-01
3.2
Modbus registers
Supported function codes
03 (0x03)
Read holding register
04 (0x04)
Read input registers
06 (0x06)
Write single register
16 (0x10)
Write multiple registers
Any changes of settings are completed with setting 4x0768 (Bus config
command) to "1" (toggle bit).
Addr
Description
Unit
Scaling
R/W Range
Data type
4x0001 Type
1
R
9710 = 1 x 1250Pa
9720 = 1 x 2500Pa
9750 = 1 x 5500Pa
9770 = 1 x 7000Pa
9711 = 2 x 1250Pa
9712 = 1 x 1 x 2500Pa
9717 = 1 x 1 x 7000Pa
9722 = 2 x 2500Pa
9777 = 2 x 7000Pa
uint16_t
4x0002 Error Code
1
R
uint16_t
4x0003 Analog output coupling
1
R/W 0 = analog output coupled with differential
pressure sensors = default
1 = analog output coupled as defined in
4x0028/4x0058 (setpoint)
uint16_t
4x0004 Differential pressure 1- Reliability
1
R
uint16_t
4x0005 Differential pressure 1 - Value
see config. R
uint16_t
4x0006 Differential pressure 2 - Reliability
1
R
uint16_t
4x0007 Differential pressure 2 - Value
see config. R
uint16_t
4x0008 Analog input 1 - Reliability
1
R
uint16_t
4x0009 Analog input 1 - Value
°C / mV 0.1 / 1
R
int16_t
4x0010 Analog input 2 - Reliability
1
R
uint16_t
4x0011 Analog input 2 - Value
°C / mV 0.1 / 1
R
int16_t
