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SPA-Bus
The manager has full support for the SPA-bus protocol including
reading and writing the setting values. Also reading of multiple
consecutive status data bits, measurement values or setting values
with one message is supported.
Several simultaneous instances of this protocol, using different
physical ports, are possible, but the events can be read by one single
instance only.
Table 7.7 – SPA-Bus Parameters
Parameter
Value
Addr
1 – 899
bit/s
1200
2400
4800
9600
(default)
19200
Emode
Channel
(Limit60)
(NoLimit)
Set = An editable parameter (password needed)
IEC 60870-5-103
The IEC standard 60870-5-103 "Companion standard for the
informative interface of protection equipment" provides standardized
communication interface to a primary system (master system).
The unbalanced transmission mode of the protocol is used, and the
device functions as a secondary station (slave) in the communication.
Data is transferred to the primary system using "data acquisition by
polling"-principle. The IEC functionality includes the following
application functions:
•
station initialization
•
general interrogation
•
clock synchronization and
•
command transmission.
It is not possible to transfer parameter data or disturbance recordings
via the IEC 103 protocol interface.
Communications
Unit
Description
SPA-bus address. Must be unique in
the system.
bps
Communication speed
Event numbering style.
Use this for new installations.
(The other modes are for
compatibility with old systems.)
7-9
Note
Set
Set
(Set)
857-UM001A-EN-P – July 2009
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