PID-6194-SETTINGS v5
Table 431: LONSPA Non group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation
SlaveAddress 1 - 899 - 1 30 Slave address
14.7.4 Operation principle
IP14401-1 v3
M11880-3 v2
The SPA bus uses an asynchronous serial communications protocol (1 start bit, 7
data bits + even parity, 1 stop bit) with data transfer rate up to 38400 bit/s. For
more information on recommended baud rate for each type of IED, refer to
Technical reference manual. Messages on the bus consist of ASCII characters.
Introduction of SPA protocol
M11880-7 v2
The basic construction of the protocol assumes that the slave has no self-initiated
need to talk to the master but the master is aware of the data contained in the slaves
and, consequently, can request required data. In addition, the master can send data
to the slave. Requesting by the master can be performed either by sequenced
polling (for example, for event information) or only on demand.
The master requests slave information using request messages and sends
information to the slave in write messages. Furthermore, the master can send all
slaves in common a broadcast message containing time or other data. The inactive
state of bus transmit and receive lines is a logical "1".
SPA protocol
M11880-10 v5
The tables below specify the SPA addresses for reading data from and writing data
to an IED with the SPA communication protocol implemented.
The SPA addresses for the pulse counter values PCFCNT:1 to PCFCNT:16 are
found in table
432.
Table 432: SPA addresses for the PCFCNT function
Function block
SPA address CNT_VAL SPA address NEW_VAL
PCFCNT:1 6-O-2788 6-O-2787
PCFCNT:2 6-O-2794 6-O-2793
PCFCNT:3 6-O-2800 6-O-2799
PCFCNT:4 6-O-2806 6-O-2805
PCFCNT:5 6-O-2812 6-O-2811
PCFCNT:6 6-O-2818 6-O-2817
PCFCNT:7 6-O-2824 6-O-2823
PCFCNT:8 6-O-2830 6-O-2829
PCFCNT:9 6-O-2836 6-O-2835
PCFCNT:10 6-O-2842 6-O-2841
Table continues on next page
Section 14 1MRK 505 384-UEN A
Station communication
580 Breaker protection REQ650 2.2 IEC
Technical manual
To Next Page
Loading...
