B&B Electronics HVD100A3 manual Set Filter 1 to

The mask can be used to look at a group of messages:

To set the mask to filter on the J1939 priority field, the mask would be loaded with:

(01, 06, 02, 04, E0, 00, 00, 00, 00, ED)

To set the mask to filter on the J1939 PGN field, the mask would be loaded with:

(01, 06, 02, 04, 07, FF, F8, 00, 00, 0B)

To set mask to filter on both the priority field and the PGN field the mask would be loaded with:

(01, 06, 02, 04, B7, FF, F8, 00, 00, BB)

Set Filter 1 to 4

Function codes 18 and 19, 28 and 29, 38 and 39, 48 and 49 are filter pairs. These filters are set by sending the desired arbitration code to each filter, 1 to 4. The filters work with the mask function. If the mask is set to zero in a position (don’t care) the value of the filter in that position doesn’t matter.

The filter arbitration field is set to match the aberration code of the incoming message. A match of the filter “and” the mask will pass the message to the PC. The X9 sets the filter On; X8 sets the filter Off, where X=1 through 4. Important: the receiver and each filter must have a different arbitration code. If the receiver and a filter are given the same arbitration code the controller may become erratic. It will need to be powered-off reset to recover from this error.

Byte	Byte	Function
Number	Value
1	01	Start of Frame
2	06	Control bytes
3	02	ID byte = J1708 message
4	YY	Function byte (18 or 19) (28 or 29) (38 or 39) (48 or 49)
5	XX	MSB of arbitration field (J1939 priority bits)
6	XX	MSB-1
7	XX	MSB-2
8	XX	LSB of arbitration field (J1939 source address)
9	00	Number of data bytes
10	CS	Checksum

To use the HDV100A3, the filter for a particular J1939 PGN the following procedure must be followed.

1. Turn off the “Receive” function by sending (01, 02, 02, 00, 00, 05).

24	HDV100A3 Command & Response Manual-1306cr
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