Mitsubishi Electric MELSEC iQ-R C R12CCPU-V, User Manual

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5 ACCESS FUNCTION USING NETWORK MODULE
5.5 Processing Time
99
5
Transmission delay time of cyclic transmission
The following shows the transmission delay time of cyclic transmission.
CC-Link IE Controller Network
The transmission delay time when using CC-Link IE Controller Network is shown below.
The patterns of calculation formula for the calculated value are as follows:
•

: Data is sent from a C Controller module (host CPU) to a C Controller module (another CPU).
•

: Data is sent from a C Controller module (host CPU) to a programmable controller CPU.
•

: Data is sent from a programmable controller CPU to a C Controller module (host CPU).
The values used in the calculation formula for transmission delay time are as follows:
• LT: Refresh cycle of a C Controller module (sending side)
• LR: Refresh cycle of a C Controller module (receiving side)
•
β
T
: Total link refresh time of a C Controller module (sending side)
*1
• β
R
: Total link refresh time of a C Controller module (receiving side)
*1
• ST: Scan time of programmable controller CPU (sending side)
*2
• SR: Scan time of programmable controller CPU (receiving side)
*2
• α
T
: Link refresh time of programmable controller CPU (sending side)
*1,*2
• α
R
: Link refresh time of programmable controller CPU (receiving side)
*1,*2
• LS: Link scan time
*2
*1 This is the total of link refresh time for the mounted CC-Link IE Controller Network modules.
*2 For more details, refer to the following manual.

MELSEC iQ-R CC-Link IE Controller Network User's Manual (Application)
Comparison between
LT and LS Station-based block
data assurance Calculated value Transmission delay time (ms)
LT > LS Disabled Normal value  LT + β
T
+ LS × 0.5 + (LR + β
R
) × 0.5

LT +
β
T
+ LS
×
0.5 + (SR +
α
R
)
×
1.5

ST +
α
T
+ LS
×
0.5 + (LR +
β
R
)
×
0.5
Maximum value

LT + β
T
+ LS × 1 + LR + β
R
 LT + β
T
+ LS × 1 + (SR + α
R
) × 2

ST +
α
T
+ LS
×
1 + LR +
β
R
Enabled Normal value

(LT +
β
T
)
×
1.5 + LS
×
0.5 + (LR +
β
R
)
×
0.5

(LT + β
T
) × 1.5 + LS × 0.5 + (SR + α
R
) × 1.5
 (ST + α
T
) × 1.5 + LS × 0.5 + (LR + β
R
) × 0.5
Maximum value

(LT +
β
T
)
×
2 + LS
×
1 + LR +
β
R

(LT +
β
T
)
×
2 + LS
×
1 + (SR +
α
R
)
×
2

(ST + α
T
) × 2 + LS × 1 + LR + β
R
LT < LS Disabled Normal value  LT + β
T
+ LS × 0.5 + (LR + β
R
) × 0.5

LT +
β
T
+ LS
×
0.5 + (SR +
α
R
)
×
1.5

ST +
α
T
+ LS
×
0.5 + (LR +
β
R
)
×
0.5
Maximum value

LT + β
T
+ LS × 1 + LR + β
R
 LT + β
T
+ LS × 1 + (SR + α
R
) × 2

ST +
α
T
+ LS
×
1 + LR +
β
R
Enabled Normal value

(LT +
β
T
) + LS
×
1 + (LR +
β
R
)
×
0.5

(LT + β
T
) + LS × 1 + (SR + α
R
) × 1.5
 (ST + α
T
) + LS × 1 + (LR + β
R
) × 0.5
Maximum value

(LT +
β
T
) + LS
×
2 + LR +
β
R

(LT +
β
T
) + LS
×
2 + (SR +
α
R
)
×
2

(ST + α
T
) + LS × 2 + LR + β
R