S+S Regeltechnik PREMASGARD 814 Series, Инструкция по эксплуатации и монтажу

Страница: 22 / 56

22
G U
PREMASGARD ® 814x - Modbus | Configuration
READOUT IN THE DISPLAY
The display value depends on the set unit system (see table "Function 05 Write Single Coil").
If required, the unit can be switched from
SI (default) to imperial units .
Standard display (cyclic)
By default, the display indicates the following measurements with the corresponding units cyclically and consecutively:
Differential pressure [Pa] [inWC], temperature [°C] [°F], relative humidity [% RH]
Alternative display (static)
The Modbus interface can be used to program an alternative output variable instead of the standard display:
dew point [°C] [°F], absolute humidity [g/m 3 ] [gr/ft 3 ], mixing ratio [g/kg] [gr/ lb], enthalpy [kJ/kg] [Btu/lb],
volume flow [m 3 /h] [CFM], differential pressure [Pa] [inWC], temperature [°C] [°F], relative humidity [% RH]
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. volume flow (see the table "Function 06 Write Single Register").
1. Reading
2. Unit
3. Index
Freely configurable display (Tyr 2)
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.
Continued on next page!