Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 93

3 SPECIFICATIONS
3 - 39
2) Safety CPU
[Link refresh time]
 T ,  R
1 .8 5
=

: Link refresh time (sending station)
T

: Link refresh time (receiving station)
R
LB : Total points of link relays (LB) refreshed by the
corresponding station
LW : Total points of link registers (LW) refreshed by the
corresponding station
LX : Total points of link inputs (LX) refreshed by the
corresponding station
LY : Total points of link outputs (LY) refreshed by the
corresponding station
SB : Number of points of the link special relay (SB)
SW : Number of points of the link special register (SW)
1: Total points are the sum of link devices set in refresh parameter
settings and network range settings.
The points assigned for reserved station are not included.
POINT
The values in this section are calculated on the basis that data are received from all
stations during one sequence scan.
When the link scan is long or when the sequence scan is short, data from all
stations may not be received within one sequence scan.
If this occurs, the actual link refresh time is less than the calculated value shown in
this section.
LB + LX + LY + SB
+ LW + 1000
16
1
1
1
1
MELSEC-Q
10 [ms]
-3
Refer to Section
3.3.3.
3 - 39