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GFK-0804B
Appendix B Micro PLC Protocol
The information in this appendix is provided only for advanced users requiring
communications between the Micro PLC and a host system.
Communications Files
Memory Types and Addresses
I/O Memory Addresses
Work Memory
Program and I/O Address Map
Communications Protocol
Data Format
Read Discretes
Read Analogs
Read Program Memory
Write Discretes
Write Analogs
Write Program Memory
Read Status
Start Program
Stop Program
Status Word
Error Reply
Communications Functions
Microsoft C (Large Model: Compile w/ -AL Option)
Microsoft C (Small Model: Compile w/ -AS Option)
Turbo C (Large Model: Compile w/ -ml Option)
Turbo C (Small Model: Compile w/ -ms Option)
IBM Compiler BASIC
Sample Programs