Mitsubishi Electric MELSEC iQ-R Series User Manual page 180

Condition
For S < LS Station-based
T
block data
assured
Station-based
block data not
assured
The transmission delay time (TD1) for B/W/Y periodic communication is asynchronous between scan and link scan.
Therefore, if the condition differs, use the formula to calculate the transmission delay time (maximum value) (TD1max).
The meaning of the variables in the equation are as follows.
Variable Meaning
TD1 Transmission delay time (normal value)
TD1max Transmission delay time (maximum value)
ST Sequence scan time on sending side (excluding link refresh time)
SR Sequence scan time on receiving side (excluding link refresh time)
T
Sending side link refresh time
R
Receiving side link refresh time
TS Extended scan time due to tracking
For details, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
LS Link scan time
*1 Total number of mountable network modules
APPX
178
Appendix 6 Processing Time
Other than the Normal value
MELSECNET/H
Maximum
extended mode
value
MELSECNET/H Normal value
extended mode
Maximum
value
Other than the Normal value
MELSECNET/H
Maximum
extended mode
value
MELSECNET/H Normal value
extended mode
Maximum
value
*1
*1
Calculation formula [ms]
TD1 = (ST + T) + (LS  0.5) + (SR + R + TS)  1.5 + 0.5  LS
TD1max = (ST + T) + (LS  1) + (SR + R + TS)  2 + 1.0  LS
TD1 = (ST + T) + (LS  0.5) + (SR + R + TS)  1.5 + 0.5  LS
TD1max = (ST + T) + (LS  1) + (SR + R + TS)  2 + 1.0  LS
TD1 = (ST + T) + (LS  0.5) + (SR + R + TS)  1.5
TD1max = (ST + T) + (LS  1) + (SR + R + TS)  2
TD1 = (ST + T) + (LS  0.5) + (SR + R + TS)  1.5 + 0.5  LS
TD1max = (ST + T) + (LS  1) + (SR + R + TS)  2 + 1.0  LS