Mitsubishi FX3UC Series, Руководство пользователя

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306
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
9 CC-Link/LT Built-in master ability (Only FX3UC-32MT-LT)
9.16 Data Link Processing Time
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
9.16.2 Transmission delay time
The transmission delay time (the time until data is received) can be calculated by the following formula.
1. Transmission delay (Built-in master
←
Input remote station)
This paragraph explains how to obtain the time it takes device (X) to turn ON or OFF on the main unit after a
signal is input to a remote I/O station.
1) Calculation formula
Transmission delay time [ms]
=
SM
×
2 + (2 - n)
*1
×
LS + Remote station input response time
SM : Scan time of the PLC
LS : Linkscan time
n : SM/LS (whose decimals are omitted)
*1.0 if the value "2 - n" is 0 or less
2) Example
The scan time of the PLC is 5 ms, the link scan time is 1.2 ms, and the input response time of the remote
I/O station is 1.5 ms
Transmission delay time [ms]
=
SM
×
2 + (2 - n)
*1
×
LS + Remote station input response time
=
5
×
2 + (2 - 4)
×
1.2 + 1.5
n
=
4 (5/1.2
=
4.16
...,
then decimals are omitted)
↓
=
5
×
2 + (-2
*1
)
×
1.2 + 1.5
=
11.5 [ms]
*1: 0 if the value "2 - n" is 0 or less
2. Transmission delay time (Built-in master
→
Output remote station)
This paragraph explains how to obtain the time after a device (Y) turns ON or OFF in the main unit until a
corresponding output turns ON or OFF in a remote station.
1) Calculation formula
Transmission delay time[ms]
=
SM + LS
×
2 + Remote station output response time
SM: Scan time of the PLC
LS: Link scan time
2) Example
The scan time of the PLC is 5 ms, the link scan time is 1.2 ms, and the output response time of the
remote I/O station is 0.5 ms
Transmission delay time[ms] = SM + LS
×
2 + Remote station output response time
= 5 + 1.2
×
2 + 0.5
= 7.9 [ms]