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ELM327P Datasheet(PDF) 57 Page - ELM Electronics |
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ELM327P Datasheet(HTML) 57 Page - ELM Electronics |
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57 / 76 page  Programmable Parameter Summary (continued) 11 J1850 Break Signal monitor enable (reports BUS ERROR if break signal duration limits are exceeded) D 13 Auto search time delay between protocols 1 & 2 setting = value x 4.096 msec 16 Default ISO baud rate (AT IB default setting) FF (10.4K) R ISO wakeup message rate (AT SW default setting) setting = value x 20.48 msec D 18 I 24 CAN auto formatting (AT CAF default setting) D 25 D CAN filler byte (used to pad out messages) 00 17 Auto search time delay between protocols 4 & 5 setting = value x 4.096 msec 00 (no delay) CAN auto flow control (AT CFC default setting) 92 (2.99 sec) I 32 (205 msec) 00 (ON) 00 (ON) 00 (ON) PP Description Values Default Type 00 to FF 00 to FF 00 to FF 00 to FF 00 = ON FF = OFF 00 = 96 FF = 10 00 = ON FF = OFF 00 = ON FF = OFF 57 of 76 ELM327DSH Elm Electronics – Circuits for the Hobbyist www.elmelectronics.com ELM327 26 D 29 Printing of the CAN data length (DLC) when printing header bytes (AT D0/D1 default setting) D FF (OFF) 00 = ON FF = OFF 2A 38 (00111000) 00 to FF D CAN Error Checking (applies to protocols 6 to C) Each bit of this byte controls an option, as follows: b7: ISO15765 Data Length 0: accept any 1: must be 8 bytes b6: ISO15765 PCI=00 0: allowed 1: not allowed b5: Search after ERR94 0: normal 1: CAN is blocked b4: Search after LV RESET 0: normal 1: CAN is blocked b3: Wiring Test 0: bypass 1: perform b2: reserved for future - leave set to 0 b1: reserved for future - leave set to 0 b0: reserved for future - leave set to 0 15 Minimum inter-message time (P2) for protocols 3 to 5 setting = value x 2.2 msec D 0A (22 msec) 00 to FF 19 I Time delay after protocol 5 attempt during an automatic search, but only if protocols 3 & 4 have not yet been tried. setting = value x 20.48 msec 28 (819 msec) 00 to FF 12 J1850 Volts (pin 3) output polarity normal = Low output for 5V, High output for 8V invert = High output for 5V, Low output for 8V R 00 = invert FF = normal FF (normal) 21 Default CAN Silent Monitoring setting (for AT CSM) R FF (ON) FF = ON 00 = OFF |
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