GE GFK-0804B manual Appendix Micro PLC Protocol

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.

HCommunications Files

HMemory Types and Addresses h I/OMemory Addresses h Work Memory

h Program and I/O Address Map

HCommunications Protocol

HData Format

h Read Discretes h Read Analogs

h Read Program Memory h Write Discretes

h Write Analogs

h Write Program Memory h Read Status

h Start Program h Stop Program h Status Word h Error Reply

HCommunications Functions

h Microsoft C (Large Model: Compile w/ -AL Option)

h Microsoft C (Small Model: Compile w/ -AS Option)

h Turbo C (Large Model: Compile w/ -ml Option)

h Turbo C (Small Model: Compile w/ -ms Option) h IBM Compiler BASIC

h Sample Programs

GFK-0804B B-1