Mitsubishi Electric MELSEC Q Series User Manual page 248

Formulas to obtain the transmission delay time applicable when the receiving module is a Q series programmable
controller CPU are listed below.
Mode
Normal
mode
Extended
mode
LS: Link scan time
P : Processing time of the C Controller module (sending side) = R
T
R : Refresh time of the C Controller module (sending side) (Page 175, Section 11.7.3)
T

: Link refresh time of the C Controller module (sending side)
T
Q : Programmable controller CPU (receiving side) processing time = S
R
S : Sequence scan time of the programmable controller CPU (receiving side) (link refresh time not included)
R

: Link refresh time of the programmable controller CPU (receiving side)
R
*1 : For details, refer to the following.
MELSEC-Q CC-Link IE Controller Network Reference Manual
*2 : Total time for the number of mounted network modules.
(2) MELSECNET/H
The following shows the formulas to obtain cyclic transmission delay time in the MELSECNET/H.
Mode
Normal
mode
P : Sending side processing time = R
T
P : Receiving side processing time = R
R
R R : Sending/receiving side refresh cycle (Page 175, Section 11.7.3)
T, R
 
: Sending/receiving side link refresh time
,
T R
LS: Link scan time
*1 : Total time for the number of mounted network modules.
*2 : For link scan time, refer to the following.
Q Corresponding MELSECNET/H Network System Reference Manual (PLC to PLC network)
246
Block data assurance
per station
None
Valid
None
Valid
*1
Block data assurance
per station
None
Valid
T
*2
Calculated
R vs. LS
T
value
Normal value
(None)
Max. value
Normal value
When R > LS
T
Max. value
Normal value
When R < LS
T
Max. value
Normal value
When R > LS
T
Max. value
Normal value
When R < LS
T
Max. value
Normal value
When R > LS
T
Max. value
Normal value
When R < LS
T
Max. value
*2
(Page 244, Section 13.5.1 (1))
Calculated
R vs. LS
T
value
Normal value
(None)
Max. value
Normal value
When R > LS
T
Max. value
Normal value
When R < LS
T
Max. value

+
T

+
R R
*1
(Page 244, Section 13.5.1 (1))
Transmission delay time [ms]
P + LS  0.5
T
P + LS
T
P  1.5 + LS  0.5
T
P  2 + LS
T
P + LS
T
P + LS  2
T
P + LS  0.5
T
P + LS
T
P + LS
T
P + LS  2
T
P  1.5 + LS  0.5
T
P
 2 + LS
T
P + LS
T
P + LS  2
T

+
T T

+
R R
*1*2
Transmission delay time [ms]
P + LS  0.5
T
P + LS
T
P  1.5 + LS  0.5
T
P  2 + LS
T
P + LS
T
P + LS  2
T
+ Q  1.5
R
+ Q  2
R
+ Q  1.5
R
+ Q  2
R
+ Q  1.5
R
+ Q  2
R
+ Q  1.5
R
+ Q  2
R
+ Q  1.5
R
+ Q  2
R
+ Q  2.5
R
+ Q  3
R
+ Q  2.5
R
+ Q  3
R
*1
+ P  0.5
R
+ P
R
+ P  0.5
R
+ P
R
+ P  0.5
R
+ P
R