P54x/EN VH/La4 Firmware and Service Manual
Version History
(VH) 16-16 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
I B Oct 2004
Reception of MODBUS frame improved
Rejection of spurious messages injected onto RS485 network
improved
Improved self checking of SRAM
Fixed an incorrect response of the summertime time bit in
IEC 60870-5-103 protocol
Prevented incorrect behavior of P545/P546 when one relay is
energized when there is noise on the signaling channel
Status of local GPS reported incorrectly in dual redundant
schemes
Setting “Char Mod Time” was missing on P541 - P544
Prevent a maintenance record when reading from an
inaccessible MODBUS register
Prevents relay crashing when phase 2 software used with
phase 1 optos
Cell 0709 now replies OK change
V2.03 or Later P54x/EN T/D11
11
Cont.
J B Jul 2005
All builds released to production. Based on 11I software
Changed MODBUS driver
V2.03 or Later P54x/EN T/D11
12
A B Mar 2002
Released for validation testing only
2nd rear comms. added
Alarms increased to 64 with user programmable alarms
Enhancements and corrections to CS103
Prevented additional events being generated on power up
V2.05 or Later P54x/EN T/E21
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