EQJW145:
Heating controller
C
ommunication functions
70 7010015003 A
© Fr. Sauter AG
The EQJW 145 is compatible with the 'Modbus
-Frame' protocol extension.
Enquiries in standard format are answered in standard format, and frame
enquiries receive an answer in frame format. This format allows reliable data
transmission even if the data are segmented during transmission. For Modbus
communication via modem, it is advisable to use the frame format because
precisely timed data transmission from the sender to the recipient is often not
available with modern transmission methods (modem with compression and
error correction functions, digital telephone network). Details about the protocol
extension are available on request.
6.3.1 Modbus data points (holding register)
Number of
holding
register
Description Comment Read
only
Decimal
points
Units
With math.
Sign?
40001 Product number Product number, device code yes 0 no
40003 Firmware version Firmware version yes 2 no
40004 Hardware version Hardware version yes 2 no
40006 Int. SerNo Internal serial number yes 0 no
40010 OutdoorTemp_AF1
Measured value for input T
A no 1 °C yes
40013 FlowTemp_VF1
Measured value for input T
F yes 1 °C yes
40014 HotWaterTemp2
Measured value for input T
W2 yes 1 °C yes
40017 ReturnTemp_RüF1
Measured value for input T
RF yes 1 °C yes
40020 RoomTemp_RF1
Measured value for input T
R yes 1 °C yes
40023 TankTemp
Measured value for input T
W1 yes 1 °C yes
40100 Time Time (hours, minutes) no 2 no
40101 Date Date (day, month) no 2 no
40102 Year Year no 0 no
40103 Switch position - top Rotary switch:
0= Position for inputs, 1=Auto, 2=Off,
3=Manual, 4=Normal, 5=Reduced
yes 0 no
40105 Switch position - bottom Rotary switch:
0= Position for inputs, 1=Auto, 2=Off,
3=Manual, 4=Normal, 5=Reduced
yes 0 no
40106 Mode_Rk1 1=Auto, 2=Stdby, 3=Manual, 4=Sun,
5=Moon
no 0 no
40107 ControlSignal_Rk1 Opening for control signal Rk1
[0...100%]
no 0 % no
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