4.10
SEL-2032
Communications Processor
Instruction Manual
Date Code 20120126
SEL
OGIC
Control Equations
Communications and Triggered Messages
Communications and Triggered Messages
Whenever the SEL-2032 transmits a triggered message to an IED on one of its ports,
it increments the LOCAL:NUM_MESG message counter in the database. If the
SEL-2032 does not receive a response to the triggered message, it will set the port
status to Inactive (bit 5 of LOCAL:PORT_STATUS and LOCAL:INAC) and
increment the LOCAL:BAD_MESG message counter in the database. If, while the
port status is Inactive, the SEL-2032 transmits ten consecutive messages without
receiving a response, it will also set port status to Port Communication FAIL (bit 10
of LOCAL:PORT_STATUS). If PARSE
x
= IGNORE and the SEL-2032 does not
receive a response to a transmitted message, it will not set port status to Inactive, nor
increment the LOCAL:BAD_MESG message counter in the database.
If the port device type, DEVICE = OTHER or SEL, the SEL-2032 will
transmit every triggered message regardless of the port status. In general, the
SEL-2032 will only retransmit a message if it has been retriggered. However,
if the triggered message is a Binary 20message, e.g., Binary 20METER, or
SEL Fast Message Read (such as 20ENERGY), and port status is Inactive, the
SEL-2032 will retransmit the message until it reestablishes communication
with the IED. Furthermore, if the device type is DEVICE = SEL and port
status is Inactive, for each triggered user-defined message or ASCII
20message, (e.g., ASCII 20METER) message, the SEL-2032 will also
transmit a CR/LF (Carriage Return with Linefeed).
For DEVICE = SEL IED, if an ASCII Operate or a Fast (Binary) Operate is
triggered while the port status is Inactive, the Operate is issued and the trigger is
cleared. The SEL-2032 will retransmit the Operate only if it has been retriggered.
The SEL-2032 will clear the Port Inactive and Communication FAIL statuses
if any of the following occurs:
If the port DEVICE = OTHER IED,
➤
The SEL-2032 receives a response of at least one character,
PARSE
x
is not set to IGNORE, and it can successfully parse
the response from the IED.
➤
The SEL-2032 receives a response of at least one character and
the PARSE
x
is set to IGNORE. Conversely, if the PARSE
x
is
set to IGNORE and the IED does not respond with at least one
character, the port Inactive and Communication FAIL statuses
will
not
be cleared.
➤
The SEL-2032 receives an unsolicited response of at least one
character.
If the port DEVICE = SEL IED,
➤
The SEL-2032 successfully performs a binary data collection
such as a 20METER or 20DEMAND.
Note: If the SEL-2032 issues an Enable/Disable Unsolicited
SER message and does not receive a response, the port status
will remain unchanged.
➤
The SEL-2032 receives an unsolicited response of at least one
character.
Whenever the port Inactive status is cleared, the SEL-2032 will transmit the
contents of the STARTUP string.
Summary of Contents for SEL-2032
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