6
REDUNDANT SYSTEM NETWORKS
6.2 Redundant System Network Overview
6.2.2 MELSECNET/H Remote I/O network
6 - 22
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
TRACKING CABLE
4
PROCEDURE FOR
STARTING UP A
REDUNDANT SYSTEM
5
REDUNDANT SYSTEM
FUNCTIONS
6
REDUNDANT SYSTEM
NETWORKS
7
PROGRAMMING
CAUTIONS
8
TROUBLESHOOTING
(6) Startup Order of System A and System B
No restrictions apply to the startup order of system A and system B when connected
to the MELSECNET/H remote I/O network.
After starting up system A and system B, the control system and standby system are
determined, and then the data link is started.
(7) Checking the Standby System Operating Status
After power-ON, the status of a MELSECNET/H module on the standby system can
be checked with the following link special relays (SB) on the control system CPU
module side.
• SB0075: Remote master station cyclic transmission status
• SB0076: Remote sub-master station cyclic transmission status
When both of the above link special relays (SB) are OFF, the MELSECNET/H module
on the standby system is running normally.
To Next Page
Loading...
