Configuration; Topology Parameters; Ip Addresses; Alignment Of The Configuration On The Protecting Controller - Datalogic SC6000 Installation Manual

3.2 CONFIGURATION

If compared with a stand-alone station, no additional settings are needed on the slave scanners
when the REDS function is used. All the parameters related to REDS function have to be set on
the active SC6000 as described in the following. A simple procedure (see par.
the Configuration on the Protecting

3.2.1 Topology Parameters

Two new configuration parameters are defined in the SC6000:
• TOPOLOGY ROLE
(values: Working/Protecting): this parameter is operator assigned and strictly connected to the
Lonworks address of the controller (0: Working, 63: Protecting). It represents the role statically
assigned to a controller: "Working" for the main controller and "Protecting" for the reserve
controller.
• REDUNDANCY ROLE
(values: Active/Standby): this parameter is read-only and represents the role that the controller
dynamically plays in the redundant system at a certain moment.
When TOPOLOGY ROLE is set to "Working", REDUNDANCY ROLE is set to "Active" by default.
When TOPOLOGY ROLE is set to "Protecting", REDUNDANCY ROLE is set "Standby" by default.

3.2.2 IP Addresses

The companion controllers have different IP address values and the parameter tree of each
controller contains the IP addresses of both of them. In order to manage the interface to any
external host computer (Sentinel PC, Genius PC or generic host) when a switch over occurs, two
separate policies have been defined to select the IP address when switching over:
• if the parameter IP Address Selection Rule is set to TOPOLOGY ROLE, the IP address seen
by the external host changes after switching over (the topology role is static).
• if the parameter IP Address Selection Rule is set to REDUNDANCY ROLE, the IP address
seen by the external host remains unchanged after switching over.
It has to be noticed that the IP address selection rule is unique for all the possible external hosts
(Sentinel PC, Genius PC or generic host).

3.2.3 Alignment of the Configuration on the Protecting Controller

The Protecting controller must explicitly receive the same configuration as the Working controller,
except for the values of the parameters TOPOLOGY ROLE.
Controller) is needed to align the reserve SC6000.
3.2.3 Alignment of