SPLUSS_LCD_SHD_MODBUS_EASY
SPLUSS_LCD_SHD_MODBUS_EASY (FB)
SPLUSS_LCD_SHD_MODBUS_EASY (FB)FUNCTION_BLOCK SPLUSS_LCD_SHD_MODBUS_EASY
General
This is a display module (input: 0.0 - 10.0V, output: Modbus - RTU) for a pressure transmitter (e.g. PREMASGARD SHD-U / SHD-SD-U / SHD692-U) with connector DIN EN 175301-803-A
The configuration of the Modbus interface and further parameters is done on the display module (variant 1). Alternatively, the configuration of further parameters can be done via a function block 'SPLUSS_LCD_SHD_MODBUS_FULL' (variant 2).
The measurement value offset is not adjustable either in the device or via Modbus.
A terminating resistor (120 ohm) can be activated / deactivated via DIP switch.
The Modbus interface is parameterized as follows without further settings:
RTU 9600 baud 8 data bits no parity 1 stop bit device address = 1
The following register ranges may be written with FC16: 21-24, 28-29 and 31-34
No compensation of the measurement value offset is provided in the device (hardware / display menu) or via Modbus. Therefore no compensation may be provided in the function block (program value <> displayed value).
Representation
InOut:
Input
xEn
BOOL
TRUE
Enable / disable communication (TRUE = enabled)
Input
byUnitId
BYTE
0
Address of the device (1 .. 247)
Input
xUpdateActual
BOOL
FALSE
Update of actual values (on every rising edge ) (range: operation)
Input
xResError
BOOL
FALSE
Reinitialization of the output ‘eErrorCodeCom’ ( on every rising edge )
Inout
ModbusClient
ModbusClientBase
Client of the device
Output
rInputVolt
REAL
Input voltage from the pressure sensor in XX.XXX volts
Output
rPressure
REAL
Differential pressure in XX.XX bar
Output
rPressureAverage
REAL
Time-averaged differential pressure in XX.XX bar
Output
rPressureMinRamge
REAL
Minimum value of the range for the differential pressure in XX.XX bar (dependent on the sensor's measurement range)
Output
rPressureMaxRange
REAL
Maximum value of the range for the differential pressure in XX.XX bar (dependent on the sensor's measurement range)
Output
rPressureMinInterv
REAL
Absolute minimum value of the differential pressure in XX.XX bar within the set interval
Output
rPressureMaxInterv
REAL
Absolute maximum value of the differential pressure in XX.XX bar within the set interval
Output
rPressureDisplay
REAL
Displayed value on the display (depending on the unit selected for the display)
Output
eUnitDisplay
SPLUSS_LCD_SHD_MODBUS_EASY_DISPLAY_UNIT
Unit of the displayed value on the display
Output
wDeviceCode
WORD
Device code of the device
Output
xAlarm
BOOL
Collective fault (TRUE = fault)
Output
xAlarmCom
BOOL
Collective fault - communication (TRUE = fault)
Output
eErrorCodeCom
ModbusErrorCode
Error code - communication (0 = no error)
Output
xBusy
BOOL
Communication indicator (TRUE = communication)
Input Const
tTimeUpdateActual
TIME
TIME#3s0ms
Update interval for the operations affected by the input 'xUpdateActual'
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