GE 350 Communications Manual page 65

CHAPTER 3: ETHERNET INTERFACE
SR3 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
□ Transparent file.
□ Transmission of disturbance data of protection equipment.
□ Transmission of sequences of events.
□ Transmission of sequences of recorded analog values.
3.14. File transfer in control direction:
□ Transparent file.
3.15. Background scan:
□ Background scan.
3.16. Definition of timeouts:
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.
3.17. 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.
3.18. Port number:
Parameter Value
Port number 2404
3.19. RFC 2200 suite:
RFC 2200 is an official Internet Standard which describes the state of
standardization of protocols used in the Internet as determined by the Internet
Architecture Board (IAB). It offers a broad spectrum of actual standards used in the
Internet. The suitable selection of documents from RFC 2200 defined in this
standard for given projects has to be chosen by the user of this standard.
⊠ Ethernet 802.3.
□ Serial X.21 interface.
□ Other selection(s) from RFC 2200 (list below if selected).
Timeout of connection establishment
Timeout of send or test APDUs
Timeout for acknowledgements in case of no
data messages t < t
2 1
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.
Remarks
In all cases
IEC60870-5-104 PROTOCOL
Selected value
Configurable
15 s
10 s
20 s
Selected value
12 APDUs
8 APDUs
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