Maxiflex P3 PAC User Manual
105
-© Omniflex
UMM126XR18.pdf
14. Steps to Set Up a Redundant Controller System
14.1 Step 1: Assemble Hardware
The hardware setup for a redundant CPU system with Common I/O is shown in Figure 13.1.
Each redundant CPU must be installed on its own master base with power supply.
Slot 1 of each redundant base must be equipped with an M1593A RIO NIM.
Connect the Remote I/O Link to the primary and secondary controllers and to the remote I/O
racks.
14.2 Step 2: Set Remote I/O DIP Switch Addresses
Set the following address switches for the modules. These switches are located inside the
doors of each module:
MODULE
ADDRESS Switch Setting (0=off; 1=on)
12345678
Primary Controller M1593A RIO NIM
1
10000000
Secondary Controller M1593A RIO NIM
2
01000000
Remote I/O Rack 1: M1248A R2c
3
11000000
Remote I/O Rack 2: M1248A R2c
4
00100000
Remote I/O Rack 3: M1248A R2c
5
10100000
Table 14.1: Remote I/O Module Address Switch Settings
The Primary Controller identifies itself by the Address set on the RIO NIM. If the RIO NIM
address is set to 1, then the P3 CPU will act as the primary controller. If the RIO NIM address
is set to 2, then the P3 CPU will act as the Secondary Controller.
If less than 3 remote I/O Bases are to be used, then omit higher Base addresses.
14.3 Step 3: Power up the Primary Controller and Remote I/O Racks
Power up the Primary Controller and Remote I/O racks and check that the Primary Controller
P3 CPU, RIO NIM and R2c Remote I/O S
canner modules have their CPU OK/NIM OK LED’s
on steady.
Plug in the Sync Link cable, but leave the Secondary Controller un-powered at this stage.
The I/O LED on the Primary Controller may flash at this point because the I/O Module List
has not been configured.
The Battery light on the Primary Controller P3 CPU should be off. If the Battery Light is ON,
check that the Battery Disconnect Tab has been removed, and that a battery is fitted to the
CPU.
14.4 Step 4: Check Remote I/O Activity
Observe the LED activity
on the Primary Controller RIO NIM and the R2c CPU’s in the
remote racks. The Token LED should be flashing steadily and there should be activity on the
Tx and Rx LED’s at least once every second.
