GE KVGC 202, Техническое руководство

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Technical Manual KVCG202/EN M/H11
KVGC202
7.2.3
Ancillary equipment
The minimum requirement to communicate with the relay is a K-Bus/IEC 60870-5
converter box type KITZ and suitable software to run on an IBM or compatible personal
computer.
RS232 interconnection lead for connecting the KITZ to a personal computer (PC) and
software as described in Chapter 7.3.
7.3 Software support
7.3.1 Courier Access
The Courier Access program is supplied with each KITZ and it allows on-line access to
any relay or other slave device on the system. It polls all available addresses on the bus
to build a list of the active relays. Each relay can be programmed with a product
description (16 characters) and a plant reference (16 characters).
A particular relay may then be chosen and accessed to display a table listing the menu
column headings. Selecting a heading from the list and pressing the return key of the
computer returns the full page of data that has been selected.
Selecting a setting from the displayed page and pressing the return key again will bring
up the setting change box displaying the current setting value and the maximum and
minimum limits of setting that have been extracted from the relay. A new setting may be
typed in and entered. The new value will be sent to the relay and the relay will send back
a copy of the data it received. If the returned value matches what was sent, it is judged to
have been received correctly and the display asks for confirmation that the new setting is
to be entered. When the execution command is issued the relay checks the setting is
within limits, stores it, then replies to state(s) if the new value has been accepted, or
rejected.
If the setting selected is password protected, the relay will reply that access is denied.
Any data received in error is automatically resent, any data not understood, but received
without error is ignored. Thus setting changes by this route are secure.
A complete setting file can be extracted from the relay and stored on disc and printed out
for record purposes. The stored settings can also be copied to other relays.
Control commands, such as load shedding/boosting, are actioned in the same way as
setting changes and can be achieved with this program by using the setting change
mechanism. This program supports modem connection but it cannot extract event or
disturbance records.
7.3.2 PAS&T
The Protection Access Software and Toolkit (PAS&T) program performs all the functions
described for the Access program, but additionally it can perform the following functions:
Automatically extracts event records, displays them on screen, prints, or stores them to
disc.
Polls the relay for selected data at set intervals and displays the values on screen, or
stores a selected number of values that it can plot on screen to show trend information.
Displays coded or decoded messages on screen to help de-bug the communication
system.
The Auto-addressing feature allocates the next available address on the bus to a new
relay.
7.3.3 CourierCom
CourierCom is a windows based setting program that can be used off-line,
i.e. without the relays being connected. Setting files can be generated in the office and
taken to site on floppy disc for loading to the relays. This program can be used to down-
load the settings to the relay, alternatively ACCESS or PAS&T may be used.