Rockwell Automation D64046.5.1 U MNL WIN DDMC - Manual (Page 145)

Appendix A
A-1
Reference Information
This appendix provides reference information about the SDS and DFA
instructions. This appendix shows:
SDS Information
execution times
control file size requirements
step description file requirements
how to determine the amount of data table memory for SDS
instructions
how to determine the amount of program file memory for SDS
instructions
maximum steps allowable without going over a file boundary
control file layout
DFA Information
execution times
control file size requirements
amount of program file memory needed for DFA instruction
control status bits
Read this section for reference information for the SDS instruction.
Execution Times
Tables A.A and A.B show the execution times per program scan for an
SDS instruction in the PLC-5 or the PLC-5/250 with 8, 16, and 32 I/O.
Combinatorial SDS “OR” and “AND” transitions have been averaged in;
these are typical times.
Appendix Overview
Reference Information for
the SDS Instruction