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1MRS757105 B
RER601/603
Technical Manual
Table 20:
IEC 60870-5-104 I frames RX time-out (t2)
Description
Type
Units
Value range
Note
Link test interval (t3) defines the interval in seconds how often the IEC
60870-5-104 link is tested if there is no other activity.
Table 21:
IEC 60870-5-104 link test interval (t3)
Description
Type
Units
Value range
Note
Suspended timeout defines the time in seconds how long a connected IEC
60870-5-104 link can be in the suspended state (STOPD) before the device closes
the connection.
Table 22:
IEC 60870-5-104 suspended time-out
Description
Type
Units
Value range
Note
Max sequence number defines the maximum sequence number used in IEC
60870-5-104 communication. The value "0" selects the standard value "32767".
Table 23:
Max sequence number
Description
Type
Units
Value range
Note
RER601/603 Configurator
Value
Timeout
Seconds
1...255
The value "t2" must be smaller than "t1". The IEC
60870-5-104 standard suggests t2 = 10 seconds.
Value
Timeout
Seconds
1...65000
This parameter must be adjusted according to
the criticality of the link. The IEC 60870-5-104
standard suggests 20 seconds but the practical
value may be substantially longer for pay-per-
use GPRS connections.
Value
Timeout
Seconds
1...65000
Using this parameter makes it easier to detect
partially closed network connections, especially
in the UDP mode
Value
Sequence number
Packets
1...32767
0 = 32767 as suggested by the IEC 60870-5-104
standard
Section 5
51
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