2.35 Ancillary Functions
219
7UM61 Manual
C53000-G1176-C127-3
The time display may be set using either the European format (DD.MM.YYYY) or the
US format (MM/DD/YYYY).
To preserve the internal battery, this switches off automatically after some hours in the
absence of an auxiliary voltage supply.
2.35.6 Commissioning Aids
Device data sent to a central or master computer system during test mode or commis-
sioning can be influenced. There are tools for testing the system interface and the
binary inputs and outputs of the device.
Applications • Test Mode
• Commissioning
Prerequisites To be able to use the commissioning aids described below, the following must apply:
– The device must be equipped with an interface.
– The device has to be connected to a control center.
2.35.6.1 Functional Description
Test Messages to
the SCADA Inter-
face during Test
Operation
If the device is connected to a central or main computer system via the SCADA inter-
face, then the information that is transmitted can be influenced.
Depending on the type of protocol, all messages and measured values transferred to
the central control system can be identified with an added message "test operation"-
bit while the device is being tested on site (test mode). This identification prevents the
messages from being incorrectly interpreted as resulting from an actual power system
disturbance or event. As another option, all messages and measured values normally
transferred via the system interface can be blocked during the testing ("block data
transmission").
Data transmission block can be accomplished by controlling binary inputs, by using
the operating panel on the device, or with a PC and DIGSI via the operator interface.
The SIPROTEC
®
4 System Description describes in detail how to activate and deac-
tivate test mode and blocked data transmission.
Checking the
System Interface
If the device features a system port and uses it to communicate with the control centre,
the DIGSI device operation can be used to test if messages are transmitted correctly.
A dialog box shows the display texts of all messages which were allocated to the
system interface in the configuration matrix. In another column of the dialog box you
can specify a value for the messages you intend to test (e.g. ON/OFF). Having entered
password no. 6 (for hardware test menus) a message can then be generated. The cor-
responding message is issued and can be read out either from the event log of the
SIPROTEC
®
4 device or from the substation control system.
The procedure is described in detail in Chapter "Mounting and Commissioning".
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