Applies To:
  • CitectSCADA 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
  • CitectHMI 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
Summary:

Can I set driver parameters on per port basis for MODNET, if yes which parameters can be set on per port basis.

 

Solution:

It is possible to setup a different set of driver parameters for MODNET for each Modnet port in the project, following is the list of parameters that can be set at port level

MaxBits
MaxBitsExt
InitVar
FileNumber
StringReverse
RegisterBitReverse
FloatMode
LongDataType
SendBCDSwap
PresetMultiRegistersOnly
ForceMultiCoilsOnly
OnlineTestExceptionMask
TransactionExceptionMask
Timeout

In a multidrop scenario, all of the above parameters can be setup at UNIT level as well (With the exception of "Timeout" as this is not aviable to be setup at unit level)

If you have two Modnet devices requiring different set of driver parameters which cannot be set at per port or per unit level then you can use the following approach

All versions before V7.0

You can achieve this by creating a second instance of the driver, Please follow KB article Q4104 for further details on setting this up.

V7.0 and above

The approach of creating a second instance for the driver will not work with V7.0 and above (Q4955), in this case the alternative at present is to run multiple clusters.

 
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