Appendix 6 Processing Time - Mitsubishi Electric MELSEC iQ-R Series User Manual

Appendix 6
Processing time used to calculate the transmission delay time
This section describes the processing time of the remote head module.
To calculate the processing time of CC-Link IE Field Network, add the processing time of the remote head
module to the processing time of the slave stations.
For the processing time of the CC-Link IE Field Network, refer to the following.
 User's manual for the master/local module used
Cyclic transmission delay time
The following is the formula to calculate the cyclic transmission delay time.
Condition
Normal value
Maximum value
*1 The meanings of the variables in the equation are as follows.
Variable Meaning
Rio Processing time [s]
(Number of RX/RY points)  0.026 + (Number of RWw/RWr points)  0.255 + 620 + Ka [s]
X
• Number of RX/RY points: The number of RX/RY points assigned to the remote head module in the network configuration setting of the master
module
• Number of RWw/RWr points: The number of RWw/RWr points assigned to the remote head module in the network configuration setting of the
master module
• Ka: 90  The number of mounted modules in which refresh settings are configured
Y (Response time of the connected modules) [s] ( Manual for the module used)
X  LS (Round down the calculated value to the nearest integer.) [s]
Z
LS Link scan time [s]
The above formula calculates the average value when the number of RX/RY points is the same as the number of actual I/O
points of the module connected to the remote head module, and an auto refresh of the same number of points as the number
of RWw/RWr points was performed.
Transmission delay time of the safety communication relay
The following is the formula to calculate the I/O processing time of the intelligent device station (safety station) included in the
transmission delay time of the safety communication relay.
Condition
Normal value
Maximum value
*1 The meanings of the variables in the equation are as follows.
Variable Meaning
SRi Input response time [s]
SRo Output response time [s]
Ys Safety I/O response time of the mounted modules [s] ( Manual for the module used)
X  LS (Round down the calculated value to the nearest integer.) [s]
Z
LS Link scan time [s]
APPX
164

Appendix 6 Processing Time

Processing Time
Input
Rio = 0.5  (Z + 1)  LS + X + Y
Rio = (Z + 1)  LS + X + Y
*1
Input
SRi = 0.5  (Z+1)  LS + Ys
SRi = (Z+1)  LS + Ys
*1
Output
Rio = 0.5  Z  LS + X + Y
Rio = Z  LS + X + Y
Output
SRo = 0.5  Z  LS + Ys
SRo = Z  LS + Ys