Sequence flag – ProSoft Technology 5201-DFNT-104S User Manual
Page 89
IEC-60870-5-104 (104S) Protocol Implementation
104S v2 ♦ ProLinx Gateway
Protocol Manual
(Firmware v2.xx)
ProSoft Technology, Inc.
Page 89 of 157
3.7
Sequence Flag
Y
ES
or N
O
In order to save bandwidth, you can configure the gateway to use the Sequence
Flag feature using the following parameters:
If this parameter is set to N
O
, this feature is not selected, the gateway will send
the object address and value for every monitored point sent to the Client, and the
Sequence Flag (SQ) will be set to zero (0).
If this parameter is set to Y
ES
, this feature is selected, the gateway will send the
object point address and value for only the first point of a sequence of points,
send only the data value without point address for any remaining points in the
sequence, and the Sequence Flag (SQ) will be set to one (1). When SQ = 1, the
Client assumes that all points after the first point use information object
addresses in a contiguous order (using the first point as the reference starting
address).
Note: Refer to the client device specification to verify if this feature is supported before you
consider using it.
March 19, 2010