LATA Switch
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[[Image:LATA_protocol_small.jpg|]]
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See also USB<->CAN documentation here: http://www.mictronics.de/projects/usb-can-bus/
Key info from this doc is:
TiiiiiiiiLDDDDDDDDDDDDDDDD[CR]
This command transmits an extended 29 Bit CAN frame. It works only if controller is in operational mode after command “O”.
- iiiiiiii Identifier in hexadecimal (00000000-1FFFFFFF) i.e. 100000BD in our example above
- L Data length code (0-8) i.e. 2 in example above
- DD Data byte value in hexadecimal (00-FF). Number of given data bytes will be checked against given data length code. e.g. 64 hex = 100% (i.e. on) and 00 hex is 0% (i.e. off) in our example above
Return: [CR] or [BEL]
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The fist byte is the Command (refer attached). In summary:
- 100 (0x64) = CMD_SWITCH_TO
- 101 (0x65) = CMD_QUERY_CIRCUIT
- 102 (0x66) = CMD_PULSE
The 2nd byte in this example is either:
- 0x64 = 100% (i.e. on)
- 0x00 = 0% (i.e. off)