Test Mode And Transmission Block; Testing The System Interface - Siemens SIPROTEC 7SJ61 Manual

3.3.1

Test Mode and Transmission Block

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 „Pro-
tocol-dependent functions" in the Appendix A.6).
If the test mode is switched on, the messages sent by a SIPROTEC 4 device to the main system has an ad-
ditional 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.
3.3.2

Testing the System Interface

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 during com-
missioning. 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
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 fol-
lowing figure).
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
Mounting and Commissioning
3.3 Commissioning
291