Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual page 218

Unicast mode
■Calculation formula
Communication cycle interval [ns]=
• 
: Cyclic transmission speed [ns] is the largest value in the following calculation formulas.
c
No. Calculation formula
1 {(50n1)+(16n2)+ndm}8+(Sn-1)830+14000+nh
2 {(30n1)+(16n2)+ndm}4+(1661n1)+(Sn-1)830+14300+nh
3 {(50n3)+(20n4)+nds}8+14000+nh
4 {(50n5)+(20n6)+ndl}8+(Sn-1)830+14000+nh
5 50000
• 
: Cyclic processing time [ns] is calculated by p1+p4.
p
■Variable
Name of variable
n1
n2
ndm
Sn
Ln
nh
n3
n4
nds
n5
n6
ndl
p1: RX/RY/RWr/RWw
processing time
p4: RX/RY/RWr/RWw
data transfer time
dw: Total number of
words
sRX
sRY
sRWr
sRWw
kX
kY
Mg
kM
APPX
216
Appendix 6 Processing Time
+ or 250000, whichever is larger Round up values of
c p
Description
(ndm + (16  n2))/1488 or Sn, whichever is larger
Sn  (RYb + RWwb)
RYb: Value of (Total number of points of "RY setting")/(11776  Sn) rounded up to the nearest integer
RWwb: Value of (Total number of points of "RWw setting")/(736  Sn) rounded up to the nearest integer
((Total number of points of "RY setting")/8) + ((Total number of points of "RWw setting")  2)
Number of slave stations
Number of local stations
Switching hub delay time  Number of switching hubs connected to the network
*1
Switching hub delay time: 50000
Sn  nhs
nhs: Value of (nds + (20  n4))/(1488  Sn) rounded up to the nearest integer
Sn  (RXb + RWrb) + Sn
RXb: Value of (Total number of points of "RX setting")/(11744  Sn) rounded up to the nearest integer
RWrb: Value of (Total number of points of "RWr setting")/(734  Sn) rounded up to the nearest integer
((Total number of points of "RX setting")/8) + ((Total number of points of "RWr setting")  2) + 8  Sn
(ndl+20  n6)/1488
(ndl-8)/1468+1
(RXl/8) + (RWrl  2) + 8
RXl: Number of points of "RX setting" of the slave station
RWrl: Number of points of "RWr setting" of the slave station
{((Total number of points of "RX setting") + (Total number of points of "RY setting"))/8 + ((Total number of points of "RWr setting") +
(Total number of points of "RWw setting"))  2}  5 + (Sn  3300)
However, if Total number of points of "RY setting" = Total number of points of "RX setting" = Total number of points of "RWr setting"
= Total number of points of "RWw setting" = 0, then p1 = 0.
(((dwkX)+kY)Mg)+kM
However, if dW is 0, p4 = 0.
((sRX+sRY)/16) + sRWr+sRWw [Word]
Total number of points of "RY setting"
Total number of points of "RY setting"
Total number of points of "RWr setting"
Total number of points of "RWw setting"
dW is less than 1000 [words]: 580
dW is 1000 [words] or more: 254
dW is less than 1000 [words]: 160000
dW is 1000 [words] or more: 477200
Station-based block data assurance setting
Assured: 1
Not assured: 1.55
When used as a master station: Sn  10000
When used as a local station: 0
*2
to be used as the maximum number of link points
*2
to be used as the maximum number of link points
*4
*4
*4
*4
and 
that are less than 1s.
c p