2.1.2.3 MultiByteInt31-(3 Bytes)

The MultiByteInt31-(3 Bytes) packet is used to store unsigned integers in the range of 0x004000 to 0x1FFFFF (decimal 16384 to 2097151) inclusive.

MultiByteInt31 (21 bits encoded in 3 bytes)

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
Value_C							Value_B							Value_A

Value_C (7 bits): Third 7 LSB of value

Value_B (7 bits): Second 7 LSB of value

Value_A (7 bits): First 7 LSB of value

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3
0	Value_C							1	Value_B							1	Value_A

Example: decimal 16384

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0
0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Encodes as follows.

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3
0	0	0	0	0	0	0	1	1	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0

Thus, the decimal value 16384 is encoded in 3 bytes, as in the following example.

 0x80 0x80 0x01