Omron CVM1-CLK21, Operation Manual

Page: 232 / 309

216
Message Delay Times Section 8-4
Number of words: 256
Data links: Halted
Note This communications cycle time is calculated assuming that there is no node
that transmits event frames before the SEND command is executed.
Link Unit servicing (source node)
×
2 PC scan time (source node)
×
2
Transmission processing (command) 3.3 ms
Communications cycle time
×
2 (see note) (600
×
4 + 110
×
32 + 320
×
0 + 4
×
0 + 2,290)
×
2 = 8,210
µ
s
×
2
≅
16.4 ms
Transmission delay (command) 0.112
≅
0.1 ms
Reception processing (command) 2.3 ms
Link Unit servicing (destination node) PC scan time (destination node)
Transmission processing (response) 0.00125
×
256 + 3 = 3.32
≅
3.3
Transmission delay (response) 0.008
×
256 + 0.112 = 2.16
≅
2.2
Reception processing (response) 0.00125
×
256 + 2.3 = 2.62
≅
2.6
Total (max. transmission delay) PC cycle time (source node)
×
2
+ PC cycle time (destination
node) + Peripheral servicing
time (destination node) +
29.9 ms