Name
Description
Value range
I frames RX
timeout (t2)
This defines the timeout in seconds from the last received I
format APDU before sending acknowledgement. The t2 must be
smaller than t1. The IEC-104 standard suggests 10.
1...255
Link test
interval (t3)
This defines the interval in seconds how often the IEC-104 link is
tested if there is no other activity. The recommended value
depends on the criticality of the link. The IEC-104 standard
suggests 20 seconds but for pay-per-use GPRS connections the
practical value may be substantially longer.
1...65000
Test link on
suspended
state
Answer to test frame activation if the 101 link is in the
suspended state.
No, Yes
Suspended
timeout
This defines the time in seconds how long a connected IEC-104
link can be in suspended state (STOPD) before the device
closes the connection. Using this parameter increases the
probability of detecting partially closed network connections
especially in UDP mode.
1...65000
Max sequence
number
These are the maximum sequence number used in IEC-104
communication. The default value “0” equals to 32767 as
suggested by the IEC-104 standard.
0...32767
Flush buffered
events on
connection
Defines if buffered events are flushed on new a IEC-104
connection.
No, Yes
Cause of
transmission
length
It defines the length of IEC-104 Cause of transmission ASDU
header field in bytes. The IEC-104 standard defines value “2”.
1, 2, 3
Common
address
length
This defines the length of IEC-104 Common address ASDU
header field in bytes. The IEC-104 standard defines value “2”.
1, 2, 3
Info object
address
length
This defines the length of IEC-104 Information object address
ASDU header field in bytes.
1, 2, 3
IEC-101
settings
The IEC-101 settings define the properties of IEC-101 link layer
and application layer parameters as described in the IEC
60870-5-101 standard. The IEC-101 communication is carried
out between the device and a IEC-101.
Slave link
address
The link-level address of IEC-101 slave.
1...65000
Link address
field length
Defines the length of the IEC-101 link-level address field in
bytes. The link-level address of IEC-101 slave.
1, 2
Event poll
interval
Event poll interval defines the IEC-101 event polling interval in
0.1 second increments (class 1 or 2 poll). The events are polled
only when the IEC-104 connection is active.
1...65000
Link test
interval
Link test interval defines the IEC-101 link test interval in 0.1
second increments. Link test is performed if there is no other
activity. The link test is performed if there is no other activity
during defined interval.
1...65000
Keep link
open
Defines that the IEC-101 link is kept always open even when
there is no active IEC-104 connection. If the functionality is
enabled the device sends link test frames and restarts the
IEC-101 link if the test fails. The events are still not polled before
the IEC-104 connection is active. Some IEC-101 slaves require
the link to be continuously open in order to operate.
No, Yes
Reply header
timeout
Defines the timeout in milliseconds that the device waits the
reply to start from IEC-101 slave after command or request.
1...65000
Table continues on next page
1MRS758456 H
Section 9
IEC-104 application settings
ARG600 Single SIM Variant
39
User Manual
