Troubleshooting guide

TD 92735EN
15 May 2012 / Ver. G
Installation and Operation Manual
Unite Connectivity Manager
62
Figure 35. Status information shown on the secondary/standby module.
Note that it is not possible to make any settings on a standby module.
In the Redundancy Sync Status field, the following status can be shown:
• Synchronizing - The synchronizing is in progress. Additionally, a counter shows the
amount of data (in percentage) that has been synchronized.
• Data in sync - The modules are synchronized meaning that all data has been copied to
the secondary Unite CM that now will act as standby module and the Primary Unite CM
will act as active module. The system is redundant when this status is shown.
• Data out of sync - The modules are not synchronized. This is shown for example if the
connection to the other module is lost.
When the system has become redundant, the virtual IP-address will be used by the Unite CM
that currently is active.
4.12.2 Connection of External Equipment via RS232 and S900 Interface
Connection of external equipment using RS232 serial interface or S900 interface must be
connected physically to both Unite CMs. See B.6 R232 Cable Connections in a Redundancy
System on page 205, or C.1 System 900/A-bus Connections in a Redundancy System on
page 206 for more information.
4.12.3 Redundancy Test
1 Unplug the active module’s power cord from the power source.
The standby module will now start up to become an active module which takes up to 60
seconds before all applications are up and running.
The Status LED flashes (red) indicating that the system no longer is
redundant since the connection to the primary module (former active module) is lost.
When the standby module has become active, the Power LED changes to steady blue but
the Status LED is unchanged as long the system is not redundant.