Test procedure, Background scan, Definition of time outs – ProSoft Technology PTQ-104C User Manual
Page 128

Reference
49TPTQ-104C ♦ 48TQuantum Platform
12TUser Manual
47TIEC 60870-5-104 Client
Test procedure
(Station-specific parameter, mark "X" if function is only used in the standard
direction, "R" if only used in the reverse direction, and "B" if used in both
directions)
Test procedure
File transfer
(Station-specific parameter, mark "X" if function is used)
File transfer in monitor direction
Transparent file
Transmission of disturbance data of protection equipment
Transmission of sequence of events
Transmission of sequence of recorded analogue values
File transfer in control direction
Transparent file
Background scan
(Station-specific parameter, mark "X" if function is only used in the standard
direction, "R" if only used in the reverse direction, and "B" if used in both
directions)
Background scan
Definition of time outs
Parameter Default Value
Remarks
Range
t
0
30 seconds
Time-out of connection establishment
1 to 1000 seconds
t
1
15 seconds
Time-out of send or test APDUs
1 to 255 seconds
t
2
10 seconds
Time-out for acknowledges in case of no data
messages (t
2
< t
1
)
1 to 255 seconds
t
3
20 seconds
Time-out for sending test frames in case of a
long idle time
1 to 300 seconds
Maximum range of values for configurable time-outs: accuracy 1 second.
Maximum number of outstanding I format APDUs k and latest acknowledge
APDUs (w)
Parameter Default Value Remarks
Range
k
6 APDUs
Maximum number of message to hold in queue
1 to 12
w
4 APDUs
Threshold value when to send ack
1 to 8
Maximum range of values k: 1 to 32767 (2
15
-1) APDUs, accuracy 1 APDU
Maximum range of values w: 1 to 32767 (2
15
-1) APDUs, accuracy 1 APDU
(Recommendation: w should not exceed two-thirds of k).
B
Page 128 of 136
ProSoft Technology, Inc.
March 4, 2013