Control file size requirements – Rockwell Automation D64046.5.1 U MNL WIN DDMC User Manual
Page 146
Reference Information
Appendix A
A-2
Table A.A
Execution Times for an SDS Instruction in the PLC-5
Number of I/O
(Step 0) Initialization
0.350 ms base +
Typical
Step Transition (No MSG)
Step Transition (with MSG)
8
0.050 ms/step
0.433 ms
0.633 ms
0.720 ms
16
0.050 ms/step
0.433 ms
0.633 ms
0.720 ms
t
32
0.050 ms/step
0.433 ms
0.633 ms
0.720 ms
Table A.B
Execution Times for an SDS Instruction in the PLC-5/250
Number of I/O
(Step 0) Initialization
0.200 ms base +
Typical
Step Transition (No MSG)
Step Transition (with MSG)
8
0.013 ms/step
0.200 ms
0.245 ms
0.270 ms
16
0.013 ms/step
0.200 ms
0.245 ms
0.270 ms
32
0.013 ms/step
0.200 ms
0.245 ms
0.270 ms
Control File Size Requirements
Tables A.C and A.D list the control file size requirements in the PLC-5
processor and the PLC-5/250 for an SDS instruction with 8, 16, and 32
I/O.
Table A.C
Control File Size Requirements for an SDS Instruction in the PLC-5
Number of I/O
Number of Words Needed for Control File
8
68
16
68
32
68
Table A.D
Control File Size Requirements for an SDS Instruction in the PLC-5/250
Number of I/O
Number of Words Needed for Control File
8
58
16
58
32
58