Thor started monitoring, listed the unit's setups and stopped monitoring while
seismo_lab recorded. 40 requests, 40 responses, every checksum valid. As
before, Thor did all of it -- we have still never originated any of these.
Confirmed identical to Series III:
* SUB 0x96 start monitoring -> ack 0x69
* SUB 0x97 stop monitoring -> ack 0x68
Both bare frames, no params, no data. These were on the unsafe-until-agreed
list as entirely unobserved; they are now observed but still never sent by us.
Erase (0xA3/0xA2) is now the only genuinely untouched destructive path.
NOT identical to Series III, and worth not reusing constants for:
* The monitoring flag is SUB 0x1C data[12] = 0x0E monitoring / 0x00 idle.
Series III uses 0x10.
* SUB 0x49 -> 0xB6 is a second, cheaper monitoring indicator at data[11]
(0x02 monitoring / 0x00 idle) in a 21-byte response rather than 60. Thor
puts it in its preamble before every operation, so it is the routine check.
New this capture:
* SUB 0x1C carries the DEVICE CLOCK at data[13:21] -- day, month, year (u16
BE), hour, minute, second. Verified against the capture's own wall time.
Nothing else read so far reports the unit's time. data[17] remains
unidentified (32 monitoring, 100 idle) -- not claimed as anything.
* Memory total is exactly 15,000,000 bytes; free dropped 4,096 bytes across a
~70s monitoring session, so free memory is not stable to compare against.
* SUB 0x3F/0x40 walk the setup-file list, the same first/next shape as
Series III's 1E/1F event walk. 0x3F -> 0xC0 first, 0x40 -> 0xBF next,
terminating on an empty name. 23 setups on this unit.
* Setup records carry ONLY the name -- 11-byte header, null-terminated name,
zero padding. There is no active-setup flag; the header is byte-identical
on every record including the terminator. The active setup is identified
solely by SUB 0x41, which uses the same record format. The asterisk on the
unit's screen is UI decoration, not a field.
* TEST1.mmb, created over the wire earlier today, appears in the list and is
what 0x41 reports as active -- a written setup becomes a real enumerable
file.
Also: Thor greys out send-to-unit while a unit is monitoring, and transmits
nothing (this capture contains no 0xDA or 0x71). That is Thor policy, not a
device refusal -- nothing suggests the Micromate would reject it, and a push to
the active setup overwrites silently. Thor is guarding the footgun the protocol
leaves open, and any client we write should do the same. Checking 0x49 data[11]
first makes that cheap.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ru8Lg9HkkYvX9VWWo65SmL
serversdownandClaude Opus 5
5400f1bef7