Difference between revisions of "MT174"
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6 = maintenance warning level (?) | 6 = maintenance warning level (?) | ||
7 = not used | 7 = not used | ||
| − | [https://www.youtube.com/watch?v=fOnKzUN7SzU Tampering / manipulation log video] | + | [https://www.youtube.com/watch?v=tKAOW3Ykq9A EMP test] |
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| + | [https://www.youtube.com/watch?v=fOnKzUN7SzU Tampering / manipulation log video] | ||
| + | |||
| + | [https://www.youtube.com/watch?v=SEQTSzwD-t4 Explaining basic concepts] | ||
[[File:ISKRA LOG.png|thumb|FIFO logbook P.98.1 for 74 "possible misuse type events"]] | [[File:ISKRA LOG.png|thumb|FIFO logbook P.98.1 for 74 "possible misuse type events"]] | ||
Latest revision as of 21:23, 8 March 2024
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
