6
REDUNDANT SYSTEM NETWORKS
6.4 Precautions for Accessing Redundant CPU from Other Networks
6 - 52
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
6.4 Precautions for Accessing Redundant CPU from Other Networks
In a system using CC-Link IE Controller Network, MELSECNET/H, MELSECNET/10 or
Ethernet, use of GX Developer or MC protocol allows communication with a redundant
CPU by specifying "control system", "standby system", "System A" or "System B".
Note that when accessing a redundant CPU from another network (network of different
network No.), there are the following restrictions on the CPU modules that can be used as
relay stations. ( Table6.8)
: Applicable, : Inapplicable
Table6.8 CPU Modules Applicable to Relay Stations for Communication with Redundant CPU from Other Networks
Serial No. of CPU module 06051 or earlier 06052 or later
System specification
Not
specified
Control
system
Standby
system
System
A
System
B
Not
specified
Control
system
Standby
system
System
A
System
B
CPU module
model name
Q00JCPU
Q00CPU
Q01CPU
Q02CPU
Q02HCPU
Q06HCPU
Q12HCPU
Q25HCPU
Q12PHCPU
Q25PHCPU