GE B30 Communications Manual page 525

CHAPTER 6: IEC 60870-5-104 COMMUNICATION
Parameter loading
 Threshold value
 Smoothing factor
 Low limit for transmission of measured values
 High limit for transmission of measured values
Parameter activation
 Activation/deactivation of persistent cyclic or periodic transmission of the addressed object
Test procedure
 Test procedure
File transfer
File transfer in monitor direction:
 Transparent file
 Transmission of disturbance data of protection equipment
 Transmission of sequences of events
 Transmission of sequences of recorded analog values
File transfer in control direction:
 Transparent file
Background scan
 Background scan
Acquisition of transmission delay

Acquisition of transmission delay
Definition of time outs
Parameter Default value Remarks
t 30 s
0
t 15 s
1
t 10 s
2
t 20 s
3
Maximum range of values for all time outs: 1 to 255 s, accuracy 1 s.
Maximum number of outstanding I-format APDUs k and latest acknowledge APDUs (w)
Parameter Default value Remarks
k 12 APDUs
w 8 APDUs
Maximum range of values k:1 to 32767 (2
Maximum range of values w:1 to 32767 APDUs, accuracy 1 APDU
Recommendation: w should not exceed two-thirds of k.
UR FAMILY – COMMUNICATIONS GUIDE
Timeout of connection establishment
Timeout of send or test APDUs
Timeout for acknowledgements in case of no data messages t
Timeout for sending test frames in case of a long idle state
Maximum difference receive sequence number to send state variable
Latest acknowledge after receiving w I-format APDUs
15
– 1) APDUs, accuracy 1 APDU
INTEROPERABILITY DOCUMENT
Selected value
120 s
15 s
< t 10 s
2 1
20 s
Selected value
12 APDUs
8 APDUs
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