ABB RELION RET670, Commissioning Manual, Page: 289 / 328

11.15 Station communication
11.15.1 Multiple command and transmit MULTICMDRCV /
MULTICMDSND
The multiple command and transmit function (MULTICMDRCV / MULTICMDSND) is
only applicable for horizontal communication.
Test of the multiple command function block and multiple transmit is recommended to be
performed in a system, that is, either in a complete delivery system as an acceptance test
(FAT/SAT) or as parts of that system, because the command function blocks are
connected in a delivery-specific way between bays and the station level and transmit.
Command and transmit function blocks included in the operation of different built-in
functions must be tested at the same time as their corresponding functions.
11.16 Remote communication
11.16.1 Binary signal transfer
Prepare the IED for verification of settings as outlined in section "Preparing the IED to
verify settings" .
To perform a test of the binary signal transfer functions, the hardware (LDCM) and binary
input and output signals to transfer must be configured as required by the application.
There are two types of internal self-supervision of the binary signal transfer:
• The I/O-circuit board is supervised as an I/O module. For example it generates FAIL
if the board is not inserted. I/O-modules not configured are not supervised.
• The communication is supervised and the signal COMFAIL is generated if a
communication error is detected.
Status for inputs and outputs as well as self-supervision status are available from the local
HMI under
• Self-supervision status: Main menu/Diagnostics/Internal events
• Status for inputs and outputs: Main menu/Test/Function status , browse to the
function group of interest.
• Remote communication related signals: Main menu/Test/Function status/
Communication/Remote communication
1MRK 504 165-UUS -
Section 11
Testing functionality by secondary injection
Transformer protection RET670 2.2 ANSI 283
Commissioning manual