S+S Regeltechnik AERASGARD ACO2-Modbus, Manual

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19
G
HYGRASGARD ® AFTM- ⁄ KFTM - LQ - CO
2
- Modbus | Configuration
Rev. 2017 - V14 GB intro
READOUT IN THE DISPLAY
By default, the display indicates the following measurements with the corresponding units
cyclically
and consecutively:
CO
2
content in ppm,
air quality
(VOC) in %,
temperature
in °C,
relative humidity
in % r.H.
The Modbus interface can be used to program an alternative output variable instead of the standard display:
CO
2
content in ppm, air quality (VOC) in %, temperature in °C, relative humidity in % r.H., atmospheric pressure in hPa
In this case, the first line indicates the value while the second line indicates the corresponding unit statically .
The index in the third line indicates the display type, e.g. atmospheric pressure (see the table "Function 06 Write Single
Register").
Reading: 1013
Unit: hPa
Index: 5
The Modbus interface allows the display screen to be individually configured, both in the 7 segment range and in
the dot-matrix range. This means that messages such as those from the PLC can be displayed.
For the
individual display , the register 4x0001 (physical value displayed) must contain the value 10.
The registers 4x0002 to 4x0019 contain information about the characters and segments to be displayed.
The dot-matrix area is also programmable in the default setting (register 4x0001 contains the value 0).
In this case, the current measured value is automatically displayed in the 7-segment area.
The two left-aligned positions are represented by the register 4x0003 (range -9...99). The value 0 switches
off the display of both positions. The display is only active if the register 4x0002 has positive values.
Composition of Segment Pattern (Register 4x0005)
Bit 0 ......
Dot A
Bit 1 ...... Dot B
Bit 2 ...... Dot C
Bit 3 ...... Dot D
Bit 4 ...... Dot DP1
Bit 5 ...... - -
Bit 6 ...... Dot E
Bit 7 ...... Dot DP2
Bit 8 ......
- -
Bit 9 ...... - -
Bit 10 .... - -
Bit 11 .... - -
Bit 12 .... - -
Bit 13 .... - -
Bit 14 .... - -
Bit 15 .... - -
Dot Matrix A H B I C J D K E L F M G N
Dot A Dot B Dot C Dot D Dot E Dot DP1 Dot DP2