MKS MF1 - Coils; Holding Registers; Protocol (Modbus Compatible)

Chapter 5: Process Interfaces
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Protocol (Modbus compatible)
Holding Registers
The address of the Holding Register starts at 1.
The Holding Registers are read- and writable.
The Holding Register represent the selected input object (default: Standard Input 1179 Object)
byte by byte.
One Holding Register is an 16 bit Value and represent two bytes of the selected input object
Example with the “Standard Input 1179 Object”
MODBUS Holding
Register Address
Bit Parameter
1 1..2 ValveOverride
1 3 Autozero
1 4...6 ReportDiag (not used at Modbus)
1 7 WinkStatus
1 8 EnableTotalizer
1 9 ResetTotalizer
1 10 ResetStatus
1 11..14 SelectGasTable
1 15 EnGasCorrection
1 16 Not used
2 1...16 FlowSetpoint LSB (Byte 1 + 2)
3 1...16 FlowSetpoint MSB (Byte 3 + 4)
Coils
The address of the Coils starts at 1.
The Coils are read- and writable.
The Coils represent the selected input object (default: Standard Input 1179 Object) bit by bit.
One Coil is an 1 bit Value and represent one bit of the selected input object