GFK-3002A
October 2017
24
If the new HTTPS URL was successfully configured after pressing the Save button, a
success statement will be displayed and the updated time will be displayed. If the
time and date was more than 20 minutes out of date prior to time synchronization
occurring after pressing the Save button, the Web Console session may end and an
error message may be presented indicating that the session’s timeout had been
reached. Log back into the Web Console to verify the time was updated as expected.
Redundancy Configuration
With firmware version 9.30 or later, it is possible to configure the CPE400 as a Hot
Standby Redundancy CPU with PROFINET IO. The two ports on LAN3 are used
exclusively for this purpose: they provide a high-speed data synchronization link
between the two CPUs. Connect the upper LAN3 port of the Primary CPU to the upper
LAN3 port of the Secondary CPU and connect the lower LAN3 port of the Primary to
the lower LAN3 port of the Secondary. Note that no additional hardware, other than
the two redundant CPUs, may be connected to LAN3.
To enable redundancy in a CPE400 project, select the CPE400 target in the
PME
Navigator
and use the
Property Inspector
to change the
Enable Redundancy
target
property to
True
.
Important: Set the
Background Window Timer
to a minimum of 5ms in both the
Primary and Backup CPE400 hardware configurations. The
Background Window
Timer
setting may be found on the
Scan
Tab in the CPE400’s hardware configuration.
Once configured for HSB Redundancy, the RACT and RBOK LEDs (Figure 1) become
functional. RACT indicates the Local CPU is Ready & Active; RBOK indicates the
Remote CPU is Ready. These two LEDs are also reflected in the Status Data of the CPU
and are presented as OPC UA Variables.
The OLED display includes two menu items used in conjunction with Redundancy:
•
RDN Info provides status information via the OLED display.
•
RDN Command permits the operator to perform a Role Switch.
For further details, refer to the
PACSystems Hot Standby CPU Redundancy User
Manual
, GFK-2308 (rev L or later).
