Interlink Transmission Time - Mitsubishi Electric MELSEC iQ-R Series User Manual

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.
Calculation formula
■Interlink transmission time required for one END processing
The time required for one END processing is 0 [ms] for interlink transmission with the MELSEC iQ-R series network module.
■Interlink transmission time to completely transmit all set points
DL [ms] = KM4  (LB  16 + LW)
The meanings of the variables and constants in the equation are as follows.
Variable Meaning
DL
Interlink transmission time
LB The total number of LB points actually transferred is within the range set in the interlink transmission setting. ( Page 74 Interlink
Transmission Settings)
LW The total number of LW points actually transferred is within the range set in the interlink transmission setting. ( Page 74 Interlink
Transmission Settings)
The meanings of the constants (KM4) in the equation are as follows.
Base unit to which the network module is mounted
Transfer 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 MELSECNET diagnostics or module diagnostics)
• Execution of a link dedicated instruction
• Link refresh
• Interlink transmission between other units
APPX
180
Appendix 6 Processing Time
Transfer destination
Main base unit
Extension base unit
Main base unit
Extension base unit
-3
KM4(10 )
0.470
0.478
0.483
0.489