TANDELTA OQSExISG2, Руководство пользователя

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PGN
65262 (0xFEEE) reports Oil Temperature in bytes 3 and 4 according to
J1939_DA201808 and PGN 65279 (0xFEFF) reports Oil Condition in byte 6. These values
are reported as unsigned integers, with an offset of +30 on the temperature and 10*
scaling on the oil condition (reported in TDN) so 0x002E = 0d46 reports an oil temperature
of 46-30 = 16C. 0x01 reports a TDN value of 10,
Sensor Readings may also be requested on demand using the two PGN messages as
shown below. This may be useful if data capture synchronous to a particular event
is required. To request Oil Temperature and Oil Condition consecutively, send a
message requesting PGN 65262 with 3 bytes of data set to 00, FE, FF, and PGN
65279 with 3 bytes of data set to 00, FE, EE. If these are sent back-to-back the
bus traffic would look something like this.
Finally the J1939 Node Address may be changed by an external node by sending 3
messages to
PGN 65240, u
sing the Commanded Address function. Here three
commands are sent:-
1) The first message has Priority 0x1C sent in the first byte, PDU format EC
in the second byte, Destination Address of 0xFF (broadcast) and Source
Address of 0x80 are used for the remaining two bytes. The first
command data is fixed at 0x00, 0xFE, 0xD8, 0xFF 0x02, 0x00, 0x09, 0x20
in little-endian (reversed) order.
2) the second has the same message with command data holding a packet
number of 0x01 followed by the upper 7 bytes of the J1939
Name/Address.
3) the third again has the same message with command data holding a
packet number of 0x02 followed by the last byte of the J1939
Name/Address, the new J1939 Node Address to which this Node is to be
set, here shown as 0x84 or Node 132 in decimal. The rest of the bytes
in the third data group are set to 0xFF.
This command changes the Node with J1939 Name/Address 50002E00770F513A to Node
Address 0x84, as shown in the last line above which displays the node at the new
address 0x84 broadcasting the same J1939 Name/Address as was previously at node
0x81.