Values To Be Added To The Communication Cycle Interval When The Watchdog Counter Is Used; Interlink Transmission Time - Mitsubishi Electric MELSEC iQ-R Series User Manual

Values to be added to the communication cycle interval when the
watchdog counter is used
If a value has been stored in 'Transient transmission additional time (calculation value)' (SW007A), set the value by adding
'Transient transmission additional time (calculation value)' (SW007A) to "Communication Period Interval Setting" and
"Transient transmission time" of "Communication Period Setting" under "Basic Settings".
For details on the watchdog counter, refer to the following.
Page 207 Cyclic transmission assurance by watchdog counter

Interlink transmission time

The following is the formula to calculate the time required for interlink transmission. Interlink transmission does not affect the
sequence scan time.
Interlink transmission time to completely transmit all set points
 = KM4  ((RX + RY)  16 + RWr + RWw) [ms]
DL

: Interlink transmission time
DL
RX: Total number of source "RX/RY" or "RX/LB" points set in "Interlink Transmission Settings" of "Application Settings".
RY: Total number of source "LB/RY" or "LB/LB" points set in "Interlink Transmission Settings" of "Application Settings".
RWr: Total number of source "RWr/RWw" or "RWr/LW" points set in "Interlink Transmission Settings" of "Application Settings".
RWw: Total number of source "LW/RWw" or "LW/LW" points set in "Interlink Transmission Settings" of "Application Settings".
• Constant (KM4)
Base unit to which the network module is mounted
Source
Main base unit
Main base unit
Extension base unit
Extension base unit
Precautions
The interlink transmission time may become longer due to the following causes.
• Communication with the engineering tool (such as CC-Link IE TSN/CC-Link IE Field diagnostics, module diagnostics)
• Execution of a link dedicated instruction
• Link refresh
• Interlink transmission between other modules
Destination
Main base unit
Extension base unit
Main base unit
Extension base unit
-3
KM4(10 )
0.175
0.202
0.242
0.271
Appendix 6 CC-Link IE TSN Processing Time
A
APPX
541