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
  • CitectFacilities 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
Summary:
I want to be able to address bits in registers such as D0.3 or R10.2 for use with the Mitsubishi FX3U series PLC but am getting a compile error when compiling my project. 

Solution:
At the time of writing this article the MELSCNETFX3U does not accomodate addressing bits in registers hence the compile error. You can however workaround the problem by modifying MELSCNETFX3U.DBF as per below:

Old entry in MELSCNETFX3U.DBF

D%U

12

1

16

0

8511

Data register

R%U

15

1

16

0

32567

File register

New entry in MELSCNETFX3U.DBF

D%U[.%x]

12

1

16

0

8511

Data register

R%U[.%x]

15

1

16

0

32567

File register

*Note that our developers are working on an enhanced version of the driver to meet this requirement which will be available for download from our driverweb.

 
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