P54x/EN VH/La4 Firmware and Service Manual
Version History
(VH) 16-28 MiCOM P543, P544, P545 & P546
H
Relay type: P54x …
Software
Version
Major Minor
Hardware
Suffix
Original
Date of Issue
Description of Changes
S1
Compatibility
Technical
Documentation
H G Oct 2004
Invalid MODBUS register 4x00966 removed
V2.09 or Later P54x/EN T/G42
I G Nov 2004
Release to production. Based on 20G software
Display of no. valid messages on LCD corrected
Operation of CB maintenance alarm corrected
Corrections to allow extended courier characters to be used in
string setting cells for courier and MODBUS
Corrected default display of neutral current for 5A CTs
Prevented a reboot for MODBUS versions during event
extraction when messages where close together
Correction to prevent the 2nd rear comms. locking up
V2.09 or Later P54x/EN T/G42
J G Apr 2006
Release to production. Based on 20G software
Correction to IEEE/US inverse reset setting
Changes to co-processor start-up to eliminate a timing
problem
V2.09 or Later P54x/EN T/G42
20
Cont.
K G Apr 2006
Release to production. Based on 20G software
Improvements to the distance protection
Add interframe gap to DNP3.0
Corrections to IRIG-B
Vector group compensations for YY2 and YY10 corrected
Corrected reporting of distance & C diff stars over CS103
Reports the correct COT for reset LEDs command sent via S1
Corrected a problem which occurs when two relays power up
when one is configured out
V2.09 or Later P54x/EN T/G42
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