Test Mode And Transmission Block; Testing The System Interface (At Port F) - Siemens 7SC80 Manual

Mounting and Commissioning
3.3 Commissioning
!
WARNING
Warning of dangers evolving from improper primary tests
Non-observance of the following measures can result in death, personal injury or substantial prop-
erty damage.
Primary tests are only allowed to be carried out by qualified personnel, who are familiar with the
²
commissioning of protection systems, the operation of the plant and the safety rules and regulations
(switching, grounding, etc.).
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
"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 F)

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:
478
E.6 Protocol-dependent Functions).
E50417-G1140-C486-A8, Edition 07.2017
SIPROTEC Compact, 7SC80, Manual