User manual

Chapter 8 Sample PLC-5 Program
8-1
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The following ladder logic program is an example of how block transfer
instructions can be used to read and program a 1700 module using block
transfers.
The program shows how to read and buffer data from a 1700 module, and how a single
block transfer write instruction can be used to send various program instructions to the module.
Data table values that are referenced to in the program are also included in this chapter.
The example assumes a 1731 or 1741 module that is setup to use block transfers and accept
programming instructions from the backplane. If you are using a different module, you must
adjust the length of the block transfer read instruction appropriately.