ProSoft Technology 5201-DFNT-104C - Manual (Page 22)

Configuring the Gateway 104C Version 3 ♦ ProLinx Gateway
Protocol Manual IEC 60870-5-104 Client (Firmware v3.xx)
Page 22 of 139 ProSoft Technology, Inc.
August 4, 2011
t0 Connection Timeout
1
to 30, default value = 30
This is a timeout value, in seconds, to determine if a connection has been lost
with the remote server. If no traffic from the remote server is received for the
period of time specified by this parameter, the currently open IP socket
connection will be closed. The connection can be re-established by the Client by
opening a new connection.
t1 Timeout Set Value
1 to 255
DEFAULT VALUE = 15
This is the timeout of send or test ASDUs and is in units of seconds. After a
packet is sent from the unit, the server must acknowledge the packet within this
time interval or else the unit will close the connection.
t2 Timeout Set Value
1 to 255
DEFAULT VALUE = 10
This is a timeout of when to send an S-format message to the host to
acknowledge outstanding messages received. This parameter is in units of
seconds and must be less than the value set for t1.
t3 Timeout Set Value
1 to 255
DEFAULT VALUE = 20
This is the timeout to wait on an idle line before the unit will send a TestFr.Act
message. This value is in units of seconds.
k (maximum queue)
1 to 20
DEFAULT VALUE = 6
This parameter specifies the number of unacknowledged messages the unit will
buffer. This parameter must match that in the server. If the set number of buffers
is filled in the unit, no other messages will be sent until the server unit
acknowledges some or all the messages.
w (latest ack threshold)
1 to 20
DEFAULT VALUE = 4
This parameter must match that of the server unit and specifies the number of
messages the gateway will receive before sending an S-format sequence
acknowledge message when no I-format data is ready to send. It is
recommended to set this value to 2/3 the value of k.
Originator address for COT
0
to 255 DEFAULT VALUE = 1
This parameter sets the address to be passed with each message when the COT
Octet Count parameter is set to 2.