Mitsubishi MELSEC Q Series User Manual page 123

5 DATA LINK PROCESSING TIME
Expanded cyclic setting
5 - 2
EX: Constant (only when remote net ver. 2 mode or remote net additional
mode is used)
50 + total in the following table
Number of occupied
stations
single
70 Number of
double
90 Number of
quadruple
110 Number
octuple
F: Return processing time {only when there is a faulty station (including
error invalid and temporary error invalid stations)}
Number of faulty stations
TR: Transient processing time (only when a transient request is made)
When there is a transient request from the master station
180 BT
When there is a transient request from the local station
40.8 BT
(Example) Using the following system configuration when the transmission rate is
10 Mbps (assuming that there is no faulty station or transient
transmission.)
Station
number 1 number 2
1
Master
Remote
station
I/O station device station
1: (occupies 1 station)
BT = 0.8
NI = 12 16
NW = 11 16
N = 5
ni = 12
nw = 10
LS = 0.8 {27 + (16 4.8) + (16
2300 + 160
= 2908.8 [µ s]
= 2.91 [ms]
Occupies Occupies
1 station 2 stations
0 0
80 Number of
stations stations
110 Number
stations of stations
160 Number
of stations of stations
118 BT
number of transient transmission stations
Station Station
number 4
2
Remote Intelligent
device station
2: (occupies 2 stations) 3: (occupies 4 stations)
quadruple
ST = 2300
1) 800 + (12 15) = 980
2) 900 + (3 50) = 1050
3) 1200 + (11 100) = 2300
A = 12, B = 3, C = 11
9.6) + (5 30) + (12
MELSEC-Q
Occupies Occupies
3 stations 4 stations
0 0
90 Number of 100 Number
stations of stations
130 Number 150 Number
of stations of stations
210 Number 260 Number
of stations of stations
(1 + number of retries)
Station
number 8
3
Station
number 12
3
Local
Remote
station
I/O station
single
EX = 50 + 110 1 = 160
4.8) + (10 9.6)} +
5 - 2
5
1