Test Mode And Transmission Block; Testing The System Interface (At Port B) - Siemens SIPROTEC 4 Manual

Test Mode and Transmission Block

3.3.1
Activation and Deactivation
If the device is connected to a central or main computer system via the SCADA interface, then the information
that is transmitted can be influenced. This is only possible with some of the protocols available (see Table
"Protocol- dependent functions" in the Appendix
If the test mode is switched on, the messages sent by a SIPROTEC 4 device to the main system has an addi-
tional test bit. This bit allows the messages to be recognized as not resulting from actual faults. Furthermore,
it can be determined by activating the transmission block that no annunciations are transmitted via the
system interface during test mode.
The SIPROTEC 4 System Manual describes in detail how to activate and deactivate the test mode and blocked
data transmission. Please note that when DIGSI is being used for device editing, the program must be in the
online operating mode for the test features to be used.

Testing the System Interface (at Port B)

3.3.2
Prefacing Remarks
If the device features a system interface and this is used to communicate with the control center, the DIGSI
device operation can be used to test if messages are transmitted correctly. This test option should however
definitely not be used while the device is in "real" operation.
!
DANGER
Danger evolving from operating the equipment (e.g. circuit breakers, disconnectors) by means of the
test function
Non-observance of the following measure will result in death, severe personal injury or substantial
property damage.
Equipment used to allow switching such as circuit breakers or disconnectors is to be checked only
²
during commissioning. Do not under any circumstances check them by means of the test function
during "real" operation by transmitting or receiving messages via the system interface.
NOTE
i
i
After termination of the system interface test the device will reboot. Thereby, all annunciation buffers are
erased. If required, these buffers should be extracted with DIGSI prior to the test.
The interface test is carried out using DIGSI in the Online operating mode:
•
Open the Online directory by double-clicking; the operating functions for the device appear.
•
Click on Test; the function selection appears in the right half of the screen.
•
Double-click Generate Indications in the list view. The Generate Indications dialog box opens (see
following figure).
Structure of the Test Dialog Box
In the column Indication the display texts of all indications are displayed which were allocated to the system
interface in the matrix. In the column SETPOINT Status the user has to define the value for the messages to
be tested. Depending on annunciation type, several input fields are offered (e.g. message
By clicking on one of the fields you can select the desired value from the pull-down menu.
SIPROTEC 4, 7SJ80, Manual
E50417-G1140-C343-A8, Edition 12.2017
E.6 Protocol-dependent Functions).
Mounting and Commissioning
3.3 Commissioning
ON / message OFF ).
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