Appendix 4.3 Cyclic Transmission Delay Time - Mitsubishi Electric MELSEC-Q Series User Manual

Appendix 4.3 Cyclic transmission delay time

The following is the formula to calculate cyclic transmission delay time.
(1) Between the master station and an intelligent device station/remote
Calculation
value
Normal value (SM
Maximum value (SM
Calculation
value
Normal value (SM
Maximum value (SM
device station
(a) Master station (RX/RWr) ← Intelligent device station/remote device station (input)
The following time is shown:
• The time from when a signal is input to the intelligent device station/remote
device station until the CPU module device of the master station is turned on or
off
• The time from when data are input to the intelligent device station/remote
device station until the data are stored in the CPU module device of the master
station
With block data assurance per station
1) + (CT n1) + Rio
1) + {CT (n1 + 1)} + Rio
SM : Master station sequence scan time
CT : Operation cycle
n1 : SM ÷ CT (Round up the calculated value to the nearest integer.)
Rio : Intelligent device station/remote device station processing time (Refer to
the manual of the intelligent device station/remote device station used.)
(b) Master station (RY/RWw)
(output)
The following time is shown:
• The time from when the CPU module device of the master station is turned on
or off until the output of the intelligent device station/remote device station is
turned on or off
• The time from when data are set to the CPU module device of the master
station until the data are output to the intelligent device station/remote device
station
With block data assurance per station
n2) + (CT 1) + Rio
n2) + (CT 2) + Rio
SM : Master station sequence scan time
CT : Operation cycle
n2 : CT ÷ SM (Round up the calculated value to the nearest integer.)
Rio : Intelligent device station/remote device station processing time (Refer to
the manual of the intelligent device station/remote device station used.)
(SM
(SM
Intelligent device station/remote device station
(SM
(SM
Appendix - 31
Without block data assurance per station
1) + (CT 1) + Rio
1) + (CT 2) + Rio
Without block data assurance per station
1) + (CT 1) + Rio
2) + (CT 2) + Rio
Appendices