1
OVERVIEW
1.2 Features
1
- 9
1
OV
ER
VIE
W
2
SYS
TEM
CONFIGURA
TI
ON
3
TR
AC
KI
N
G
C
ABL
E
4
P
R
OCE
DURE
FO
R
S
TAR
TING
UP
A
RE
DUN
DAN
T
S
Y
S
T
E
M
5
RE
DUNDA
NT S
Y
S
T
E
M
FUNCTIONS
6
RE
DUN
DAN
T
S
Y
S
T
E
M
NE
TW
O
R
K
S
7
PR
OG
R
A
MM
IN
G
CA
UTIO
N
S
8
TR
O
U
BLE
S
HOOTING
(b) MELSECNET/H Remote I/O Network
MELSECNET/H remote I/O stations can continue the operation even when
control/standby system switching occurs. (
Diagram 1.5 System Configuration for MELSECNET/H Remote I/O Network
MELSECNET/H Remote I/O network
Control system
Standby system
Tracking cable
Tracking cable
Remote I/O
station
Multiplexed
Remote Master Station
Multiplexed
Remote Sub-master Station
Remote I/O
station
Remote I/O
station
MELSECNET/H Remote I/O network
Control system
Remote I/O
station
Remote I/O
station
Remote I/O
station
Error, fault
Multiplexed Remote Sub-master Station (Master Station operation)