Mitsubishi Electric MELSEC-Q Series - Link Refresh Time

245
CHAPTER 7 PROCESSING TIME
7
7.2 Link Refresh Time
7.2 Link Refresh Time
The following are calculation formulas for the link refresh time (increase in END processing time of the CPU module).
(1) For Basic model QCPUs, High Performance model QCPUs, Process CPUs,
Redundant CPUs, and Universal model QCPUs)
*1 Total number of link device points for the range set by refresh parameters and set in the network range assignment. Note
that the points assigned to reserved stations are excluded.
Remark
• Add E only when refreshing the data to the memory card file register. Addition is not required when refreshing
the data to the standard RAM and extended SRAM cassette file registers.
• Add
L only when using the interlink transmission.
T: Link refresh time on sending side
R: Link refresh time on receiving side
LB: Total number of actual link refresh points in LB
*1
LW: Total number of actual link refresh points in LW
*1
LX: Total number of actual link refresh points in LX
*1
LY: Total number of actual link refresh points in LY
*1
SB: SB points
SW: SW points
E: Transfer time of file register (R, ZR), extended data register (D), or extended link register (W) on memory
card
L: Interlink transmission time ( Page 247, Section 7.2.1)
KM1, KM2, and KM3: Constant
16
16
KM1 KM2
KM3
LB LX LY SB
LW SW
LW
LB LX LY
[ms]
[ms]