COMMISSIONING THE CONTROLLERS FOR REDUNDANCY
SNAP PAC Redundancy Option User’s Guide
26
Additional configuration options are described in
“Using Controller Redundancy – Debug Options”
Now you are ready to commission the controllers for redundancy as described in the next section.
Commissioning the Controllers for Redundancy
SNAP PAC S-series controllers have two independent Ethernet network interfaces, labeled on the
top of the controller as ENET 1 and ENET 2. The controller sends its initial BootP request from ENET 1,
and the IP address you assign to the controller is for this primary interface.
The two PAC S controllers in a redundant system communicate with each other using the secondary
IP address over ENET 2. In order to assign the secondary address, you must first assign the primary
address. See
“Assigning a Primary IP Address to ENET 1 on each Controller” on page
When assigning the secondary addresses for ENET 2 on each controller, make sure that the
secondary address for Controller 1 is even, such as 172.22.22.2; make sure the secondary address for
Controller 2 is odd, such as 172.22.22.3. Also, the two IP addresses must be sequential, such as the
examples, 172.22.22.2 and 172.22.22.3.
To assign the secondary IP for ENET 2, follow the steps below.
NOTE: If you need to configure or modify settings for the network interface cards on your PC, you must be
logged in with administrative rights.
1.
Make sure that Controller 1 and Controller 2 are both connected according to the instructions
in
Chapter 2: Connecting the Hardware
, and that both controllers are turned on.
2.
Make sure that the PAC Project software is installed on the PC.
3.
Make sure that you have assigned a primary IP address to ENET 1 for both Controller 1 and
Controller 2, and that you know these addresses. For more information, see
Primary IP Address to ENET 1 on each Controller” on page
.
4.
Make sure that you have created a redundant control engine that uses the IP addresses of the
controllers and arbiter that you want to commission. See
NOTE: The following instructions are for PAC Redundancy Manager. However, you can use PAC Terminal to
commission the controllers for redundancy.
5.
In PAC Redundancy Manager, under Tasks & Tools > Controller Management, click Commission
for Redundancy.
