ABB RES670 Technical Manual page 672

Section 19
Station communication
666
Add LON Device Types LNT
A new device is added to LON Network Tool from the Device menu or by installing
the device from the ABB LON Device Types package for LNT 505 using SLDT
package version 1p2 r04.
LON net address
To establish a LON connection, the IED has to be given a unique net address. The net
address consists of a subnet and node number. This is accomplished with the LON
Network Tool by creating one device for each IED.
Vertical communication
Vertical communication describes communication between the monitoring devices and
protection and control IEDs. This communication includes sending of changed process
data to monitoring devices as events and transfer of commands, parameter data and
disturbance recorder files. This communication is implemented using explicit
messages.
Events and indications
Events are sent to the monitoring devices using explicit messages (message code 44H)
with unacknowledged transport service of the LonTalk protocol. When a signal is
changed in the IED, one message with the value, quality and time is transmitted from
terminal.
Binary events
Binary events are generated in Event function blocks EVENT:1 to EVENT:20 in the
IEDs. The EVENT function blocks have predefined LON addresses. Table
the LON addresses to the first input on the EVENT function blocks. Addresses to the
other inputs on the EVENT function block are consecutive after the first input. For
example, input 15 on EVENT:17 function block has the address 1280 + 14 (15-1) =
1294.
For double indications, only the first eight inputs 1–8 must be used. Inputs 9–16 can be
used for other types of events at the same EVENT block.
Three EVENT function blocks EVENT:1 to EVENT:3 running with a fast loop time (3
ms) are available as basic in the IEDs.. The remaining EVENT function blocks
EVENT:4 to EVENT:9 run with a loop time of 8 ms and EVENT:10 to EVENT:20 run
with a loop time of 100 ms. The EVENT blocks are used to send binary signals,
integers, real time values like analogue data from measuring functions and mA input
modules as well as pulse counter signals.
16 pulse counter value function blocks PCFCNT:1 to PCFCNT:16, and 24 mA input
service values function blocks SMMI1_In1 to 6 – SMMI4_In1 to 6 are available in the
IEDs.
1MRK 511 408-UUS A
503
Phasor measurement unit RES670 2.2 ANSI
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