User Guide
MES 1003 WMS
Doc no. 100837-MAN – Rev. E1 – Rev. date 2022-10
© Danfoss IXA A/S | Page 25
4.4.
Supported Functions
4.4.1.
Read Coils (Modbus Function 1)
The read coils shown below is total coils available including support for previous versions of the WMS. The dimmed coils
must not be used.
Supports 42 coils – on/off values (1 bit each, Offset 0, 42 coils)
Coil 0
Operating state
ON when sensing, otherwise OFF
Coil 1
Standby state
ON when SPE active without measuring, otherwise OFF
Coil 2
Sample Point 1 measurements ready
ON when samples from WSU 1 is ready, otherwise OFF
Coil 3
Sample Point 2 measurements ready
ON when samples from WSU 2 is ready, otherwise OFF
Coil 4
Sample Point 3 measurements ready
ON when samples from WSU 3 is ready, otherwise OFF
Coil 5
Sample Point 4 measurements ready
ON when samples from WSU 4 is ready, otherwise OFF
Coil 6
Alarms state
ON when alarms active, OFF when no alarms
Coil 7
Warnings state
ON when warnings active, OFF when no alarms
Coil 8
Low Flow Sample Point 1 Alarm
ON if a there is no signal from the flow switch while sample
sequence for WSU 1 is active, otherwise OFF
Coil 9
Low Flow Sample Point 2 Alarm
ON if a there is no signal from the flow switch while sample
sequence for WSU 2 is active, otherwise OFF
Coil 10
Low Flow Sample Point 3 Alarm
ON if a there is no signal from the flow switch while sample
sequence for WSU 3 is active, otherwise OFF
Coil 11
Low Flow Sample Point 4 Alarm
ON if a there is no signal from the flow switch while sample
sequence for WSU 4 is active, otherwise OFF
Coil 12
Thermal Trip WSU 1 Alarm
ON if EOCR in WSU 1 is active, otherwise OFF
Coil 13
Thermal Trip WSU 2 Alarm
ON if EOCR in WSU 2 is active, otherwise OFF
Coil 14
Thermal Trip WSU 3 Alarm
ON if EOCR in WSU 3 is active, otherwise OFF
Coil 15
Thermal Trip WSU 4 Alarm
ON if EOCR in WSU 4 is active, otherwise OFF
Coil 16
Low Pressure WSU 1 Alarm
ON if the pressure transmitter in WSU 1 measures a pressure
below the low-pressure limit otherwise OFF
Coil 17
Low Pressure WSU 2 Alarm
ON if the pressure transmitter in WSU 2 measures a pressure
below the low-pressure limit otherwise OFF
Coil 18
Low Pressure WSU 3 Alarm
ON if the pressure transmitter in WSU 3 measures a pressure
below the low-pressure limit otherwise OFF
Coil 19
Low Pressure WSU 4 Alarm
ON if the pressure transmitter in WSU 4 measures a pressure
below the low-pressure limit otherwise OFF
Coil 20
High Temperature WSU 1 Warning
ON if the temperature sensor in WSU 1 measures a temperature
above the high-temperature limit, otherwise OFF
Coil 21
High Temperature WSU 2 Warning
ON if the temperature sensor in WSU 2 measures a temperature
above the high-temperature limit, otherwise OFF
Coil 22
High Temperature WSU 3 Warning
ON if the temperature sensor in WSU 3 measures a temperature
above the high-temperature limit, otherwise OFF
Coil 23
High Temperature WSU 4 Warning
ON if the temperature sensor in WSU 4 measures a temperature
above the high-temperature limit, otherwise OFF
Coil 24
Invalid WMS Configuration
On if the WMS contains an incorrect sample sequence
configuration, otherwise OFF
Coil 25
Time must be setup on WMS
ON when the time has not been setup properly on the sensor,
otherwise OFF
Coil 26
pH Sensor Disconnected Alarm
ON when the signal from the pH sensors is lost, otherwise OFF
Coil 27
Turbidity Sensor Disconnected Alarm
ON when the signal from the Turbidity sensors is lost,
otherwise OFF
Coil 28
PAH Sensor Disconnected Alarm
ON when the signal from the PAH sensors is lost, otherwise OFF
Coil 29
Pressure Transmitter Sample Point 1
Disconnected Alarm
On when the signal from the pressure transmitter in WSU 1 is
lost, otherwise OFF
