Redundancy Configuration Restrictions; C300 Controller Device Index; Iolink Interface Considerations - Honeywell C300 User Manual

8. C300 Redundancy operation

8.2. Redundancy configuration restrictions

8.2 Redundancy configuration restrictions
There are a number of restrictions imposed to device configuration for the purpose of
providing device redundancy.

C300 Controller Device Index

The primary C300 Controller of a redundant controller pair and non-redundant C300
Controllers must be configured with an odd numbered Device Index. Control Builder
will enforce this restriction. The secondary C300 Controller of a redundant controller
pair is assigned an even Device Index (primary controller Device Index plus 1) upon the
configuration of the primary controller.
The Device Index switches on the primary and secondary controller IOTAs must be set
according to their configured Device Indexes. If the Device Index switches on a primary
or non-redundant C300 IOTA are set to an even number address or do not match the
configured Device Index, then an error is generated when loading the controller and the
load operation is aborted.
Refer to the section
configuration.

IOLINK interface considerations

In a C300 redundant controller pair, a C300 IOLINK function block which is configured
to support a specific IO Family, (IOLTYPE parameter set to SERIES_8_IO_TYPE) is
verified in the secondary controller by the primary controller. After the primary
controller synchronizes the configured IOTYPE, the primary uses the IOLink interface to
communicate with the secondary controller to verify that the associated IOLink interface
on the secondary is configured to support the same IO Family. If the IOLink cables are
not connected between the primary and secondary controllers, initial-sync failures will
result.
Series 8 FIM restrictions
The Series 8 FIM control hardware is available with a non-redundant IOTA that accepts a single
Series 8 FIM module and a redundant IOTA that contains connections for accepting two Series 8
FIM modules.
Non-redundant IOTA
A non-redundant Series 8 FIM module can be configured with either an odd or even Device
Index. The Device Index switches on the associated non-redundant IOTA must be set according
to the module's configured Device Index. A Series 8 FIM module installed on a non-redundant
IOTA cannot be configured as redundant. A status bit (RDNCAPABILITY parameter) indicates
208
C300 Controller Configuration
Series 8 C300 Controller User's Guide
Honeywell
for details on controller
R500
April 2017