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MELSEC-
3 SPECIFICATIONS
3.9 Transmission Delay Time
Transmission delay time is indicated below.
• For input
Indicates the time from when a signal is input to the remote station until the device
(X) of the CPU turns on (off).
• For output
Indicates the time from when the device (Y) of the CPU turns on (on) until the output
of the remote station turns on (off).
The transmission delay time can be calculated by the following expression.
Transmission delay time
"CC-Link side transmission delay time" "CC-Link/LT side
transmission delay time"
(1) CC-Link side transmission delay time
This is the time taken until a signal is transmitted between the master station and
remote I/O station, which is indicated in the user's manual of the master module.
Note that the response time of the remote I/O station should be ignored.
(2) CC-Link/LT side transmission delay time
(a) AJ65SBT-CLB remote station (input)
[Calculation expression]
LS
remote station input response time [ms]
LS : Link scan time (refer to Section 3.8)
(b) AJ65SBT-CLB remote station (output)
[Calculation expression]
LS
2 remote station input response time [ms]
LS : Link scan time (refer to Section 3.8)
(Example) When the CC-Link master station sequence program scan time is
10ms, the CC-Link link scan time is 2.5ms, the CC-Link/LT remote I/O
station input response time is 1.5ms, the CC-Link/LT transmission
speed is 2.5Mbps, the number of stations is 28, and the point mode
setting is the 4-point mode
1) For input
CC-Link side : 10
2.5 2 15 [ms]
CC-Link/LT side : 22
(46 28)
0.4
0.54 [ms]
15
0.54 15.54 [ms]
2) For output
CC-Link side : 10
2.5 3 17.5 [ms]
CC-Link/LT side : (22
(46 28) 0.4) 2 1.08 [ms]
17.5
1.08 18.58 [ms]
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