Mitsubishi Electric MELSEC Q Series Reference Manual page 262

(2) For a multi-network system
The following shows the calculation formula for the link dedicated instruction transmission delay time that is
required to access a station on another network.
Each processing time is calculated from the formulas in Page 256, Section 7.4.1 (1).
When routing through three or more networks, the processing time between the relay stations are added.
When routing through three networks
Ex.
(Link dedicated instruction transmission delay time) = (Processing time from request source to relay station 1)
+ (Processing time from relay station 1 to relay station 2) + (Processing time from relay station 2 to request
target)
1M
P
1N
S
260
(Request source)
1 1N 2 1N 3
S S
Network No.1
(Relay station 1)
6 1N 5 1N 4 2M
S S
3M 1
P
(Relay station 2)
1 2N 4 3N 5
P S S
Network No.2
2N 2 2N 3
S S
3N 2
S
Network No.3
3N 4 3N 3
S S
(Request target)