19
G
HYGRASGARD
®
RFTF - Modbus
|
Configuration, Telegrams
LED bar graph display (Register 4x0014 = 1 to 4)
The LEDs are connected in a display chain and show the value recorded in the register 4x0013 (bar graph value) in colour. Individual
intermediary stages are displayed by changes in brightness.
The bar graph colour choice can be selected via the register 4x0014 (bar graph mode) and can be set individually via the LED colour
register (4x0025 to 4x0039) if required.
The adjacent register settings correspond to the follow-
ing example of a
user-defined traffic light display
:
LED 1 red (colour register)
LED 2 yellow
LED 3 yellow-green
LED 4 green
LED 5 green
4x0013
Reading
4x0014
= 4
4x0020
= 100 (user-defined colour red)
4x0021
= 25 colour yellow
4x0022
= 45 colour yellow-green
4x0023
= 55 colour green
4x0024
= 55 colour green
4x0025
= 40 colour register red
4x0026
= 1 colour register green
4x0027
= 2 colour register blue
POTENTIOMETER AND ROTWARY SWITCH
The potentiometer setting is recorded in the range from 0-100% and is emitted via the register 3x0005 (setpoint
potentiometer). The rotary switch setting (optional) can be queries via the register 3x0010 (rotary switch) in the positions
1 to 5.
PRESENCE BUTTON
The presence button is mapped via registers 1x0001 to 1x0003. If the button is not assigned any LED
(
LED mode is not equal to a value of 5
) the button states can be recorded via the following register:
1x0001
Button pressed = 1, detection via edge change
1x0002 Button released = 1, detection via edge change
1x0003 Button status, current button status at time of query
The button information that is triggered by an edge change can be saved until the next MODBUS telegram query "
Function
02 Read Discrete Input
" in order to enable the reliable detection of button activation even with longer bus sampling cycles
(e.g. 1 second).
When assigning the button to a LED (
LED mode contains a value of 5
), the LED status will change automatically every time a
button is pressed. The corresponding LED must be switched on via the function 05 Write Single Coil.
The LED status can be queried via register 1x0001.
The register 1x0002 has no function.
The register 1x0003 shows the current button status at the time of query.
The LED status can also be set or deleted via the function 05 Write Single Coil Bit 6.
TELEGRAMS
Function 04 Read Input Register
Register
Parameter
Data Type
Value
Range
3x0001
Temperature
Sampling 4 s
Signed 16 Bit
0...500
0.0...+50.0 °C
3x0002
Temperature
Filtering 32 s
Signed 16 Bit
0...500
0.0...+50.0 °C
3x0003
Relative humidity
Sampling 4 s
Signed 16 Bit
0...1000
0.0...100.0 % r.H.
3x0004
Relative humidity
Filtering 32 s
Signed 16 Bit
0...1000
0.0...100.0 % r.H.
3x0005
Setpoint potentiometer
Signed 16 Bit
0...1000
0.0...100.0 %
3x0006
Dew point
Computed value
Signed 16 Bit
0...500
0.0...+50.0 °C
3x0007
Absolute humidity
Computed value
Signed 16 Bit
0...800
0.0...80.0 g/m
3
3x0008
Mixture ratio
Computed value
Signed 16 Bit
0...800
0.0...80.0 g/kg
3x0009
Enthalpy
Computed value
Signed 16 Bit
0...850
0.0...85.0 kJ/kg
3x0010
Rotary switch
Unsigned 8 Bit
0...4
Positions 1...5
