Applies To:
  • CitectSCADA 5.20, 5.21, 5.30, 5.31
Summary:
Motorola Moscad and Moscad L units (radio comms units) communicated to can only support a bitblock and maxlength size of 240 with modbus comms from Citect. 

Solution:
Motorola Moscad and Moscad L units (radio comms units) communicated to can only support a bitblock and maxlength size of 240 with modbus comms from Citect.

These two fields for the modbus entry in protdir.dbf need to be manually edited to the smaller size.

The original protdir.dbf entry reads

MODBUS MODBUS 400 2000 0x37f

this needs to be

MODBUS MODBUS 240 240 0x37f

 
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