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MELSEC-Q
3 SPECIFICATIONS
2) In the case of END asynchronization
[Transmission delay time of B/W/Y communication] (END asynchronization)
1) Multiplexed remote master station Multiplexed remote sub-master station:
Transmission delay time (T
DM1)
[Multiplexed remote master station side scan time (Sm) > Link scan time (LS)]
T
DM1 = Sm + m + LS + (Ss + s) 2 [ms]
[Multiplexed remote master station side scan time (Sm) < Link scan time (LS)]
T
DM1 = Sm + m + LS + (Ss + s) 2 [ms]
2) Multiplexed remote sub-master station
Multiplexed remote master station:
Transmission delay time (T
DS1)
[Multiplexed remote master station side scan time (Sm) > Link scan time (LS)]
T
DS1 = Ss + s + LS + (Sm + m) 2 [ms]
[Multiplexed remote master station side scan time (Sm) < Link scan time (LS)]
T
DS1 = Ss + s + LS + (Sm + m) 2 [ms]
Sm :Multiplexed remote master station side scan time
Ss :Multiplexed remote sub-master station side scan time
m :Multiplexed remote master station side link refresh time
s :Multiplexed remote sub-master station side link refresh time
LS :Link scan time
The above calculations are effective under the following conditions:
• There are no faulty stations.
• Transient transmission is not executed.
POINT
When the block send/receive data assurance per station setting is enabled, the
following formulas are used.
1) Formula for Transmission delay time (T
DM1)
[Multiplexed remote master station side scan time (Sm) > Link scan time (LS)]
T
DM1 = (Sm + m) 2 + LS + (Ss +s) 2 [ms]
[Multiplexed remote master station side scan time (Sm) < Link scan time (LS)]
T
DM1 = Sm + m + LS 2 + (Ss + s) 2 [ms]
2) Formula for Transmission delay time (T
DS1)
[Multiplexed remote master station side scan time (Sm) > Link scan time (LS)]
T
DS1 = Ss + s + LS + (Sm + m) 3 [ms]
[Multiplexed remote master station side scan time (Sm) < Link scan time (LS)]
T
DS1 = Ss + s + LS 2 + (Sm + m) 2 [ms]