Rockwell Automation 2705 RediPanel Push Button Module - Manual (Page 55)

Chapter 4
Programming the RediPANEL Modules
4–16
Block Transfer Read and Write Instruction Parameters
Program all block transfer read and write instructions in the first rungs of
your program. Each instruction transfers a maximum of 64 words between
the processor and the sub I/O scanner. There are 8 words for the sub I/O
scanner utility functions and 8 words for each of the 7 logical racks of
RediPANELs the sub I/O scanner can communicate with.
The block transfer read and write instructions have certain parameters that
you must enter. They are as follows:
Parameter Description Notes
Rack Number of I/O rack in which the I/O scanner is located. Consult PLC manual
Group Number of I/O group in rack. 0 - 7
Module Number of slot in I/O group in which the sub I/O scanner is
located. 0 or 1
Control Block 5-word integer file that controls the instruction’s operation.
This is not the fil type for control elements, R Enter the integer file address without the # symbol.
For example, N7: (any integer file) not #N7:.
Data File Address that the processor uses to transfer data (writing to
or reading from). Enter file address without the # symbol.
Length Number of words the sub I/O scanner is transferring. 8 words (for Sub I/O Scanner utility functions) plus 2 words for
each 1/4 rack of I/O the Sub I/O Scanner communicates with.
The Length is 20 for the following example:
4 RediPANELS configured for 1/4 rack
1 RediPANEL configured for 1/2 rack to the Sub Scanner
8 words (Sub I/O Scanner utility functions)
8 words (2 words for each 1/4 RediPANEL)
+ 4 words (for one 1/2 rack RediPANEL)
20 words
Continuous Mode of instruction execution. Enter N for No.