P54x/EN VH/La4 Firmware and Service Manual
Version History
(VH) 16-30 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
B J Nov 2004
Display of no. valid messages on LCD corrected
Operation of CB maintenance alarm corrected
Some text in auto-reclose column made consistent with that in
overcurrent column
Improvements to VTS and auto-reclose in single pole tripping
applications
Corrections to allow extended courier characters to be used in
string setting cells for courier and MODBUS
Fixed an incorrect response of the summertime time bit in
IEC 60870-5-103 protocol
Corrected reporting of local GPS fail in dual redundant
schemes
Corrected default display of neutral current for 5A CTs
Prevented a reboot for DNP3.0 versions when control &
support settings are changed rapidly
Prevented a reboot for MODBUS versions during event
extraction when messages were close together
V2.11 or Later P54x/EN T/H53
C J Nov 2004
Released to production. Based on 30B
Correction to prevent the 2nd rear comms. locking up
Correction to prevent the front panel UI and comms. lockup
after continued operation
Changes to co-processor start-up to eliminate a timing
problem
V2.11 or Later P54x/EN T/H53
30
Cont.
D J Dec 2004
Released to production. Based on 30C
Improvements to operation when subjected to multiple
communication switches when operating in non-GPS mode
V2.11 or Later P54x/EN T/H53
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