Appendix 4.1 Link Refresh Time - Mitsubishi Electric MELSEC-Q Series User Manual

Appendix 4.1 Link refresh time

The following are formulas to calculate the link refresh time.
(1) Calculation formula
,
T
αT
αR
RX
RY
RWr
RWw
SB
SW
αE
KM1, KM2, KM3: Constant
(Note-1): Total number of link device points for the range set by the refresh parameters and
Universal model QCPU
(Note-1): Only the Q02UCPU is acceptable.
= KM1 + KM2
R
RX+RY
= KM3
E
16
: Sending-side link refresh time
: Receiving-side link refresh time
: Total number of RX points that are actually being link-refreshed
: Total number of RY points that are actually being link-refreshed
: Total number of RWr points that are actually being link-refreshed
: Total number of RWw points that are actually being link-refreshed
: Number of SB points
: Number of SW points
: Memory card file register (R, ZR), extended data register (D), and extended
link register (W) transfer time
set in the network configuration settings. Note that the points assigned to reserved
stations are excluded.
REMARK
Add αE 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.
• When Simple Motion module is mounted in the main base unit
CPU type
Q00UJ/Q00U/Q01U/Q02UCPU
Q03UD/Q03UDECPU
Q04UDH/Q04UDEH/Q06UDH/
Q06UDEH/Q10UDH/Q10UDEH/
Q13UDH/Q13UDEH/Q20UDH/
Q20UDEH/Q26UDH/Q26UDEH/
Q50UDEH/Q100UDEHCPU
Q03UDV/Q04UDV/Q04UDPV/
Q06UDV/Q06UDPV/Q13UDV/
Q13UDPV/Q26UDV/Q26UDPVCPU
RX+RY+SB
+RWr+RWw+SW
16
+RWr+RWw
[ms]
Appendix - 29
+ [ms]
E
(Note-1)
(Note-1)
(Note-1)
(Note-1)
KM1 KM2
-3 -3
( 10 ) ( 10 )
160 0.41
90 0.41
90 0.41
45 0.41
Appendices
KM3
-3
( 10 )
(Note-1)
0.39
0.39
0.33
-