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Last Sweep Time......................................................................................................3-11
PLC Status Word .....................................................................................................3-11
Error Nack Mailbox Message ..................................................................................3-15
Table of Major Error Status Codes ..........................................................................3-16
Table of Minor Error Status Codes ..........................................................................3-16
Text Buffer Message................................................................................................3-18
Block Transfer Message...........................................................................................3-19
Connection Data Message........................................................................................3-20
Inquiry Message .......................................................................................................3-21
Inquiry Message Example........................................................................................3-22
Chapter 4 Integrity Checking and Error Recovery ........................................................... 4-1
Acknowledgment and Negative Acknowledgment Messages ..........................................4-1
Block Check Code (BCC) ..........................................................................................4-2
Explanation of Read SMEM with Text Buffer: %R Word Mode ...........................6-15
Write System Memory..............................................................................................6-16
Example of Write SMEM no Text Buffer: %Q in Bit Mode ...................................6-17
Contents
GFK-0529C Contents vii
Explanation of Write SMEM no Text Buffer: %Q in Bit Mode .............................6