Iec103 Channel Attributes - ABB COM600 series User Manual

1MRS752278
5.3.3.
COM600 series, Version 5.0
IEC 60870-5-103 Master (OPC) User's Manual

IEC103 Channel attributes

Table 5.3.3-1 IEC103 channel attributes
Name Value or Value range/ Default
In use 0 = Not in use, the channel
communication is stopped
1 = In use
Default: 1
Modem signal
Clear To Send 0 = Passive signal
(CTS)
1 = Active signal
Data Carrier Detect 0 = Passive signal
(DCD)
1 = Active signal
Diagnostic coun-
ters
Transmitted tele-
grams
Failed transmissions
Transmit timeouts
Transmitted com-
mands
Transmitted replies
Description
Data type: Integer
Access: No limitations
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 IU
attribute = 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
polling of the station in turn is completed.
Data type: Integer
Access: Read-only
Indicates the state of the Clear To Send
(CTS) signal.
Indicates the state of the Data Carrier
Detect (DCD) signal.
Data type: Integer
Access: Read-only
Incremented each time a message is
transmitted to the IEC103 channel by the
IEC103 OPC Server.
Incremented each time a message trans-
mission to the IEC103 channel fails for
some reason.
Incremented each time a transaction
based transmission does not receive a
response within a configured timeout.
Incremented each time a command is
transmitted to the IEC103 channel by the
IEC103 OPC Server.
Incremented each time a reply is transmit-
ted to the IEC103 channel by the IEC103
OPC Server.
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