G
®
THERMASGARD
Function 04 Read Input Register
Register
3x0001
Temperature
3x0002
Temperature
3x0003
Setpoint potentiometer
Dew point
3x0004
3x0005
Relative humidity
Function 08 Diagnostics
The following sub function codes are supported
Sub Function
Parameter
Code
Echo of transmission data
00
(Loopback)
Restart Modbus
01
(Reset listen-only mode)
04
Activation listen-only mode
10
Delete counter
11
Counter bus telegrams
12
Counter communication errors
(Parity, CRC, frame errors, etc.)
13
Counter exception telegrams
14
Counter slave telegrams
15
Counter telegrams without answer
Function 17 Report Slave ID
Composition of answer telegram
Byte No.
Parameter
00
Number of bytes
01
Slave ID (device type)
02
Slave ID (device class)
03
Status
04
Version number (release)
05
Version number (version)
06
Version number (index)
RTM 1- Modbus | Telegrams
Parameter
Sampling 4 s
Filtering 32 s
Computed value
Filtering 32 s
Data Type
Signed 16 Bit
Signed 16 Bit
Signed 16 Bit
Signed 16 Bit
Signed 16 Bit
Data Type
Answer
Echo data
Echo telegram
No answer
Echo telegram
Unsigned 16 bit
All valid bus telegrams
Unsigned 16 bit
Faulty bus telegrams
Unsigned 16 bit
Error counter
Unsigned 16 bit
Slave telegrams
Unsigned 16 bit
Broadcast messages (address 0)
Data Type
Answer
Unsigned 8 Bit
6
Unsigned 8 Bit
4 = THERMASGARD
Unsigned 8 Bit
10 = THERMASGARD
Unsigned 8 Bit
255 = RUN, 0 = STOP
Unsigned 8 Bit
1...9
Unsigned 8 Bit
1...99
Unsigned 8 Bit
1
14
Value
Range
0...500
0.0...+50.0 °C
0...500
0.0...+50.0 °C
0...1000
0.0...100.0 %
0...500
0.0...+50.0 °C
0...1000
0.0...100.0 % r.H.
®
MODBUS
®
/ THERMASREG
®