CDA ci860 Specifications Page 128

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Alarm Analysis Configuration
128 3BDS011222-510 B
Printer Hardware Considerations
It is important to use a printer that has good support for reporting its status to the
operating system. The Alarm Logger is highly dependant on the reported status to
work as intended.
When using a line printer, the recommendation is to connect the printer to a parallel
or USB port. If the printer is connected to the serial port the Alarm Logger will not
detect when the printer is powered off.
Configurations
Basically, there are three types of configurations for the Alarm Logger service:
•Single
Fail-over redundancy
Parallel redundancy.
In a single configuration only one printer is connected. If a failure is detected for the
printer, alarms or events will be buffered in the Alarm Logger Service. Once the
printer is working again, the buffered alarms or events will be printed. A description
of how to use the default Alarm Logger Configuration in the Library Structure and
the default Logger aspect in the Service Structure is found in Setting up an Alarm
Printer with the Delivered Default Aspects on page 129.
In a fail-over redundant configuration more than one printer is connected, but only
one printer is active and printing. When a failure is detected for the active printer the
other printer will start printing. Fail-over redundancy is achieved by creating several
service providers in the same service group.If you want to have alarm printers with
fail-over redundancy, see How to Create Fail-Over Redundancy for Alarm Printers
on page 132.
The following configurations (some of them described in System 800xA
Operations, Operator Workplace Configuration, 3BSE030322*) are not available
for the Alarm Logger: All settings under the Sort tab and settings for showing
row headers, showing column headers, viewable messages under the Columns
tab.
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