Mitsubishi Electric MELSEC iQ-R Series User Manual page 283

Unicast mode (100 Mbps)
■ Calculation formula
The communication cycle interval [ns] is calculated as follows: 
.

sp
Cyclic transmission time [ns] = 
•  : This value varies depending on whether a CC-Link IE TSN Class A device station with the basic cycle or normal speed
c
cycle exists or not.
Item
When a CC-Link IE TSN Class A device station with the basic cycle or normal
speed cycle does not exist
When a CC-Link IE TSN Class A device station with the basic cycle or normal
speed cycle exists
*1
No. Calculation formula
1 A1 + A2 A1: {(42  n1) + (16  n2) + ndm}  80 + (Sn - 1)  5150 + 14000 + nh + nrp
A2: {(42  en1) + (16  en2) + endm}  80
2 B1 + B2 B1: {(42  n3) + (20  n4) + nds}  80 + 14000 + nh + nrp
B2: {(42  en3) + (20  en4) + ends}  80
3 C1 + C2 C1: {(42  n5) + (20  n6) + ndl}  80 + (Sn - 1)  5150 + 14000 + nh + nrp
C2: {(42  en5) + (20  en6) + endl}  80
4 D  n7 D: (Sn - 1)  5150 + 187440
5 The largest value among the maximum response times during the time-managed polling of the CC-Link IE TSN Class A device stations set in the basic
cycle or medium speed cycle
*1 Meanings of symbols used in the table are as follows.
A1, B1, C1: Calculation formulas of main modules
A2, B2, C2: Calculation formulas of extension modules
For the maximum response time for time-managed polling for the device stations, refer to the user's manual
for the device station used.
•  : The following calculation formula.
sc
Calculation formula
{(42  sn3) + (20  sn4) + sndm}  80
Cyclic transmission time [ns] = 
•  : p1 + p3 + kp + kuu
p
•  : p4
sp
■ Variable
Round up the value after decimal point of each variable before assigning it to the calculation formula.
Name of variable Description
n1 (ndm + (16  n2)) / 1488 or Sn, whichever is larger
n2 Sn  (RYb + RWwb) + Ln  (LBmb + LWmb)
RYb: Value of (Total number of points of "RY Setting" of main modules) / (11776  Sn) rounded up to the nearest integer
RWwb: Value of (Total number of points of "RWw Setting" of main modules) / (736  Sn) rounded up to the nearest integer
LBmb: Value of (Number of points of "LB setting" set in the master station) / 11776 rounded up to the nearest integer
LWmb: Value of (Number of points of "LW setting" set in the master station) / 736 rounded up to the nearest integer
ndm ((Total number of points of "RY Setting" of main modules) / 8) + ((Total number of points of "RWw Setting" of main modules)  2) +
((Number of points of "LB setting" set in the master station) / 8)  Ln + ((Number of points of "LW setting" set in the master station)  2)
 Ln
sndm Number of connections in "Safety Communication Setting" in "Basic Settings" of the master station  80
Sn Number of device stations
SSn Number of device stations in which safety communication is performed
Ln Number of local stations
+ 
c sc
+  or 340000, whichever is larger.
p sp
+  +  +  . Round up less than 1 s in 
c p sc sp
Calculation formula
The largest value in items No.1 to No.3 + No.4
No.1 + (the value in No.2 or No.3, whichever is larger) + No.4 + No.5
,  ,  , and
c p sc
APPX
Appendix 6 Processing Time
A
281