12
APPLICATION FUNCTIONS
9
DEVICE MONIT
O
R
UT
IL
ITY
10
MELS
EC D
A
TA
LI
N
K
LI
BRAR
Y
11
PROGRAMMING
12
AP
PL
ICA
T
IO
N
FUNCT
IONS
13
E
R
ROR COD
E
S
14
TROU
BL
E
S
H
O
O
T
ING
A
APPE
NDICES
I
INDEX
12.1 Transient Transmission Function
12.1.2 Routing function
12
- 11
POINT
(1) When networks are connected in a loop as shown in the figure below, make
sure to set the routing parameters so that the same relay stations are routed
for both the "route from the request source to the request target" and the
"route back from the request target to the request source". Do not set the
parameters so that the route to and from goes around the entire loop. Since
the first relay station in the return path from the request target is determined
by the station relayed in the forward path, data cannot be transferred to a
station in the different path, which results in an error.
(2) When transient transmission is performed to a remote network using the
routing parameters, the amount of transmission data and the number of
transmissions may affect the entire system since data is transferred through
many networks. For example, in networks No.2 to 5 in the figure above, the
link scan time may become temporarily longer and the transient transmission
within the own station may be delayed because of the transient transmissions
from other networks. When using the routing parameters, design the route
considering the entire system.
1
2 4
3
2
1
1
2
3
3 4
1
5
4
2
3
1
No.1
No.8
No.7
No.6
No.5
No.4
No.3
No.2
C
B
A
A indicates the path from the request source to
the request target.
B and C indicate the path from the request
target to the request source.
Avoid path C when setting the return path.
Request
source
Request
target
