YOKOGAWA F3LC11-1F, User Manual

Page: 91 / 202

Appx.A3-1
IM 34M6H41-02E 2nd Edition : Aug. 1, 2005-00
Appendix A3. Module Processing Time
The table below shows the internal processing time (processing time A and processing
time B in the table below) of the module, starting from the time a command is completely
received from a higher-level equipment, until a response is returned.
As seen from the higher-level equipment, the time starting from completion of command
transmission to beginning of response receiving is made up of processing time A +
processing time B + FA-M3 CPU module processing time + scan time. (However, this
may be further delayed if another link module dials a request at the same time.)
CPU
Processing
Processing
B
Response
Command
Processing
A
High- level
computer (display)
Personal Computer
Link module
FA- M3
CPU module
1 scan
Break in
scanning
1 scan
Break in
scanning
FAAP0301.VSD
Command
Number of
Points
Processing
time A (ms)
Processing
Time B (ms)
Total (ms)
1 bit 0.31 0.64 0.95
BRD
256 bits 0.31 5.63 5.94
1 bit 0.39 0.48 0.87
BWR
256 bits 2.95 0.48 3.43
1 bit 0.38 0.49 0.87
BFL
256 bits 0.38 0.49 0.87
1 bit 0.34 0.52 0.86
BRR
32 bits 3.52 0.85 4.37
1 bit 0.42 0.50 0.92
BRW
32 bits 5.30 0.50 5.80
1 word 0.34 0.61 0.95
WRD
64 words 0.34 5.36 5.70
1 word 0.46 0.52 0.98
WWR
64 words 6.21 0.52 6.73
1 word 0.46 0.52 0.98
WFL
32 words 3.05 0.52 3.57
1 word 0.37 0.63 1.00
WRR
32 words 3.43 2.87 6.30
1 word 0.48 0.54 1.02
WRW
32 words 6.81 0.54 7.35