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9 Connecting to Allen-Bradley (Rockwell) PLC
NB-series Programmable Terminals Host Connection Manual (V108)
9-3 Communication Parameter Setting
9
9-3-2 When Using AB CompactLogix/ControlLogix Series
(DF1) Protocol
Note The software must be changed to “Offline” status.
• Setting Example
Create a new tag with Name of a and Data Type of INT.
Note 1 When selecting the Data Type, note that the CompactLogix/ControlLogix protocol supports only 3
Data Types such as INT, BOOL, and REAL.
2 The protocol does not support multidimentional array. Only the range of Dim0 can be defined.
3 The range of file number supported by each Data Type is 0 to 253 for INT, 0 to 253 for REAL, and
0 to 999 for BOOL.
Continue to create 2 tags: one with Name of b and Data Type of REAL and the other with name
of c and Data Type of BOOL, as shown below:
Note The address range of BOOL variable is defined to 1024 in the PLC, however, the accessible address
range is to 999 at max.
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