Firmware and Service Manual P54x/EN VH/La4
Version History
MiCOM P543, P544, P545 & P546
(
VH) 16-19
H
Relay type: P54x …
Software
Version
Major Minor
Hardware
Suffix
Original
Date of Issue
Description of Changes
S1
Compatibility
Technical
Documentation
C B Mar 2003
Improved self diagnostics relating to input module clock
Modified courier block transfer mechanism so it can handle
more than 255 blocks
Intermittent loss of data from 2nd rear comms. port corrected
PSL logic for user defined intertrips corrected P545 & P546
Permissive intertrip in dual redundant schemes corrected
Recommended upgrading to 12D or later
V2.05 or Later P54x/EN T/E21
D B Jun 2003
All builds released to production. Based on 12C software
Changes to clock recovery circuits to improve operation with
multiplexers
Prevented unwanted comms. delay alarms
V2.05 or later
P54x/EN T/E21
E B Sept 2003
All builds released to production. Based on 12D software
Prevents compressed disturbance recorder stalling
Correction to operation of reset relays/LEDs opto
Prevents CS103 reporting more non-compressed disturbance
records than actually present
V2.05 or later P54x/EN T/E21
F B Jun 2004
Not released to production. Supplied to one customer. Based on
12E software
Improved self-checking of analogue data acquisition
Differential intertrip in IEC 60870-5-103 reported with correct
FAN
V2.05 or Later P54x/EN T/E21
12
Cont.
G B Oct 2004
All builds released to production. Based on 12E software
Improved self-checking of analogue data acquisition
V2.05 or Later P54x/EN T/E21
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