Open main menu

MT174

Revision as of 21:13, 8 March 2024 by Barney (talk | contribs) (Created page with "=== ISKRA MT174 === thumb|ISKRA MT174 ISKRA MT174 (230/400V, rated 85A) mostly used in Saxonia this seems to have some noticable semaphores wich can be...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

ISKRA MT174

 
ISKRA MT174

ISKRA MT174 (230/400V, rated 85A) mostly used in Saxonia this seems to have some noticable semaphores wich can be visualy inspected:

KD = lid/cover open (there must be a switch somewhere) BAT = internal battery low DÜ = transmission mode FF = "Fatal" counter (?) SET = counter in program mode The IR-Interface is claimed to be IEC 62056-21 mode C (asynchron, half-duplex, 300 - 19.200 baud, 7bit, even parity, 1stop (1_7D_1P_E_1S) and it is bidirectional. So one can also send something over that interface. There's an optional RS485 wire interface on some models.

The "Fatal counter" is a hex value 8bit flag register: 0 = Firmware error 1 = Counter parameter checksum error 2 = energy/maximum checksum error 3 = not used 4 = not used 5 = not used 6 = maintenance warning level (?) 7 = not used

Tampering / manipulation log video

 
FIFO logbook P.98.1 for 74 "possible misuse type events"

Manual (short)

Manual