Rockwell Automation 865 Differential Protection Relay - Manual (Page 138)

7-12 Communications
865-UM001A-EN-P – July 2009
The device will accept:
•
ASDU 6: Time synchronization
•
ASDU 7: Initiation of general interrogation and
•
ASDU 20: General command
The data in a message frame is identified by:
•
type identification
•
function type and
•
information number
These are fixed for data items in the compatible range of the
protocol, for example, the trip of I> function is identified by: type
identification = 1, function type = 160 and information number = 90.
"Private range" function types are used for such data items, which
are not defined by the standard (e.g. the status of the digital inputs
and the control of the objects).
The function type and information number used in private range
messages is configurable. This enables flexible interfacing to
different master systems.
Table 7.9 – Parameters
Parameter Value Unit Description Note
Addr 1 – 254 An unique address within the system Set
bit/s
9600
19200
bps Communication speed Set
MeasInt 200 – 10000 ms Minimum measurement response
interval Set
SyncRe
Sync
Sync+Proc
Msg
Msg+Proc
ASDU6 response time mode Set
Set = An editable parameter (password needed)