906
APPX
Appendix 9 Processing Time
Link refresh processing time for CC-Link IE Field Network Basic
The link refresh processing time for CC-Link IE Field Network Basic (the increase in END processing time for the CPU
module) can be calculated by the following formula.
T [s] = KM1 + KM2 (((RX + RY) 16) + RWw + RWr) + E
E [s] = KM3 + KM4 ((RX + RY) 16) + RWw + RWr)
• T: Link refresh time
• E: Link refresh time when the file register (R, ZR) is used
*1
• RX: Total number of points of remote input (RX) refreshed by the master station
*2
• RY: Total number of points of remote output (RY) refreshed by the master station
*2
• RWw: Total number of points of remote register (RWw) refreshed by the master station
*2
• RWr: Total number of points of remote register (RWr) refreshed by the master station
*2
*1 This is added when file register (R, ZR) is used.
*2 This value is determined according to the number of slave stations to be connected and the number of occupied stations.
Condition Constant value
KM1 12.5
KM2 0.02
KM3 14.5
KM4 When the extended SRAM cassette or battery-less
option cassette is not used
0.04
When the extended SRAM cassette or battery-less
option cassette is used
0.11
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