Channel Attributes - ABB COM600 series 5.0 Technical Reference Manual

1MRS758690
4.4.2.
COM600 series 5.0
Master Protocols (Ethernet) and Applications Technical Refer-
ence Manual

Channel attributes

Table 4.4.2-1 Channel attributes
Property / Para- Value or Value range/ Default
meter
Basic
In use 0 = Not in use, the channel
communication is stopped.
1 = In use.
Diagnostic Coun-
ters
Transmitted tele-
grams
Failed transmissions
Timeout errors
Transmitted I format
messages
Transmitted S
format messages
Transmitted U
format messages
Received I format
messages
Received S format
messages
Received U format
messages
Received messages
TCP Connect count
TCP Accept count
TCP Close count
Description
The state of the channel - whether it is in
use or not. When a channel is not in use,
no data can be transmitted on it, and no
data is received from it. The channel
attributes can be read as usual. Generally,
a channel must be taken out of use by
setting this attribute to 0 before the chan-
nel attributes can be written.
When a channel is stopped by setting the
In use attribute to 0, all data transmission
on the channel ceases. However, before
that, the protocol stack executes to the
end all on-going data transactions. For
example, the of the station in turn is com-
pleted.
The number of transmitted data messages.
The number of failed transmissions.
The number of transmitted commands.
The number of transmitted information
messages.
The number of transmitted supervisory
messages.
The number of transmitted unnumbered
messages.
The number of received information mes-
sages.
The number of received supervisory mes-
sages.
The number of received unnumbered
messages.
The number of received messages.
The count of TCP connect request.
The count of accepted TCP connect
request.
The count of closed TCP connection.
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