Difference between revisions of "MT174"
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(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...") |
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| − | === ISKRA MT174 === | + | ===ISKRA MT174=== |
[[File:ISKRAMT174.png|thumb|ISKRA MT174]] | [[File:ISKRAMT174.png|thumb|ISKRA MT174]] | ||
ISKRA MT174 (230/400V, rated 85A) mostly used in Saxonia | ISKRA MT174 (230/400V, rated 85A) mostly used in Saxonia | ||
this seems to have some noticable semaphores wich can be visualy inspected: | this seems to have some noticable semaphores wich can be visualy inspected: | ||
| − | + | KD = lid/cover open (there must be a switch somewhere) | |
| − | KD = lid/cover open (there must be a switch somewhere) | + | BAT = internal battery low |
| − | BAT = internal battery low | + | DÜ = transmission mode |
| − | DÜ = transmission mode | + | FF = "Fatal" counter (?) |
| − | FF = "Fatal" counter (?) | + | SET = counter in program mode |
| − | 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 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. | ||
Revision as of 21:15, 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
