10
■
CPU Switch Unit
The standard system consists of one CPU unit. In order to
create a redundant Network Security System, customers
would need to purchase two CPU units (or one additional
CPU unit if the system is already in place) plus a CPU
Switch Unit, WJ-MPS850. The CPU Switch Unit is a comput-
er that monitors and manages both CPU units.
●
Operation
At any given time that the system is running, one of the
CPU units is in an Active state and the other is in a Standby
state. If the Active CPU fails, the CPU Switch Unit will auto-
matically switch the Standby unit to an Active state.
●
Connect with CPU Units
The CPU Switch Unit connects to the CPU units through its
parallel port (see section
!1
).
• Connect the RS485 modular cables between the con-
troller ports (RS-485) of the CPU units and the con-
troller ports (RS-485) of the CPU Switch Unit.
• Connect the diagnostic cables between parallel ports
of the CPU units and the diagnostic input ports of CPU
Switch Unit.
• Set the redundant CPU selector to YES on the rear of
the A and B CPU units.
PUSH
FUSE
AC IN
TARGET
DATA 1
MAIN CPU-ACT
CAITION
MAIN CPU-STANDBY
PERIPHERAL INTERFACE (RS-232C)
SYSTEM CONTROLLER (RS-485)
DIAGNOSTIC
INPUT
DATA 1
DATA 2
DATA 2
DATA 3
DATA 3
DATA 4
DATA 4
DATA 5
DATA 5
DATA 6
DATA 6
DATA 7
DATA 7
DATA 8
DATA 8
DATA 9
DATA 9
DATA 10
DATA 10
DATA 11
DATA 11
DATA 12
DATA 12
3
2
1
3
2
1
3
2
1
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
DATA 8
DATA 9
DATA 10
DATA 11
DATA 12
A CPU
B CPU
PARALLEL
REDUNDANT
CPU
SATELLITE
MODE
10BASE-T / 100BASE-TX
3
OTHER
ENCODER
DECODER
SYSTEM
CONTROLLER
DATA 12
DATA 11
DATA 10
DATA 9
DATA 8
DATA 7
DATA 6
DATA 5
DATA 4
DATA 3
DATA 2
DATA 1
PERIPHERAL INTERFACE (RS-232C)
(RS-485)
SYSTEM
CONTROLLER
2
1
SATELLITE
STANDALONE
YES
NO
AC IN
125V 6.3A
SIGNAL
GND
PARALLEL
REDUNDANT
CPU
SATELLITE
MODE
10BASE-T / 100BASE-TX
3
OTHER
ENCODER
DECODER
SYSTEM
CONTROLLER
DATA 12
DATA 11
DATA 10
DATA 9
DATA 8
DATA 7
DATA 6
DATA 5
DATA 4
DATA 3
DATA 2
DATA 1
PERIPHERAL INTERFACE (RS-232C)
(RS-485)
SYSTEM
CONTROLLER
2
1
SATELLITE
STANDALONE
YES
NO
AC IN
125V 6.3A
SIGNAL
GND
Summary of Contents for WJMPU955 - PROCESSING UNIT - TMU
Page 26: ...26...
Page 27: ...27 OPERATING PROCEDURES with WV CU850...
Page 42: ...42...
Page 43: ...43 OPERATING PROCEDURES with WV CU360C...
Page 57: ...57 TROUBLESHOOTING...
Page 61: ......
