Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual - Manual (Page 129)

Calculating Program Timing
Chapter 9
9-12
Category Words of
Memory 1
Time ( µ s)
Integer or
Floating Point
False
Time ( µ s)
Floating point
True
Time ( µ s)
Integer
True
Title Code
File COP copy 88 + 2.7W 104 + 3.8W 20 4Ć7 File COP copy
counter, timer, and control
88 + 2.7W
98 + 5.8W
104 + 3.8W 20 4 7
FLL fill 81 + 2/.1 W 100 + 3.1W 15
counter, timer, and control 97 + 4.4W
Shift Register BSL bit shift left 74 + 3.4W 57
BSR bit shift right 78 + 3.0W
FFL FIFO load 54 44
FFU FIFO unload 68 + 3.2W 46
Diagnostic FBC file bit compare 6Ć11
0 mismatch 75 + 6W 31
1 mismatch 130 + 6W
2 mismatches 151 + 6W
DDT diagnostic detect
0 mismatch
71 + 6W 31
1 mismatch 150 + 6W
2 mismatches 161 + 6W
Zone Control MCR master control 12 18 1
Immediate I/O IIN immediate input 2Ć3
local 196 16
remote 204
IOT immediate output
local
202 16
remote 166
Sequencer SQI sequencer input 57 14 5Ć9
SQL sequencer load 55 42 4Ć7
SQO sequencer output 77 42 5Ć9
Jump and Subroutine JMP jump 45 15 2Ć3
JSR jump to subroutine
SBR 0 parameters 56 15 2Ć3
1 parameter 91 3Ć5
add per parameter 21
RET return from sub.
0 parameters
48 13 1
1 parameter 70 2Ć3
add per parameter 21
LBL label 12 12 3
W = number of elements acted on per scan
1
Use the smaller number if all addresses are below word 4096; use the larger number if all addresses are above 4096.