ProSoft Technology 5205-104S-PDPS - Manual (Page 16)

4205/5205-TS-104S-PDPS ♦ ProLinx Standalone Customizing the Sample Configuration File
IEC-60870-5-104 to PDPS Communication Module with Time Stamp
Page 16 of 128 ProSoft Technology, Inc.
July 12, 2007
Clear Queue on Close
Clear queue on close : 0 #Clear the queue when connection
#closed (0=No, 1=Yes)
Use this command to define if the module will store the unacknowledged buffers
in the unit after the connection is closed. If the specification is to be followed, set
this parameter to 0 and the packets will be resent after a connection is made. If
you want to flush the packets after the connection is closed, set this parameter to
1 (this is not according to the specification).
t1 Timeout Set Value
t1 timeout set value : 60 #timeout of send or test ASDU
This is the timeout of send or test ASDU's and is in units of seconds. After a
packet is sent from the unit, the client must acknowledge the packet within this
time interval or else the unit will close the connection.
t2 Timeout Set Value
t2 timeout set value : 10 #timeout of ack when no data (t2<t1)
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
t3 timeout set value : 30 #timeout for test frame on idle state
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)
k (maximum queue) : 12 #maximum number of message to hold in
#queue (1-20)
This parameter specifies the number of unacknowledged messages the unit will
buffer. This parameter must match that in the host. If the set number of buffers
are filled in the unit, no other messages will be sent until the host unit
acknowledges some or all the messages.
w (latest ack threshold)
w (latest ack threshold) : 8 #threshold value when to send ack (1-20)
This parameter must match that of the host unit and specifies the number of
messages the module 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.