Linx HumPRC Series Data Manual page 25

CRCERRS - CRC Error Count
Volatile Address = 0x40
The value in the CRCERRS register is incremented each time a packet with
a valid header is received that fails the CRC check on the payload. This
check applies only to unencrypted packets. Overflows are ignored. Writing
0x00 to this register initializes the count. Figure 31 shows the command
and response.
HumPRC Series CRC Error Count
TM
Read Command
Header Size Escape Address
0xFF 0x02 0xFE 0x40
Write Command
Header Size Address Value
0xFF 0x02 0x40 V
Figure 31: HumPRC Series CRC Error Count Command and Response
TM
HOPTABLE - Channel Hop Table
Volatile Address = 0x4B; Non-Volatile Address = 0x00
The module supports 6 different hop sequences with minimal correlation.
The sequence is set by the value in the HOPTABLE register. Changing the
hop sequence changes the band utilization, much the same way that a
channel does for a non-hopping transmitter. The hop table selection must
match between the transmitter and receiver. Valid values are 0-5. The
default value of 0xFF must be changed before communication can occur.
This is normally done by the Join process. Figure 32 shows the command
and response.
HumPRC Series Channel Hop Table
TM
Read Command
Header Size Escape Address
0x4B
0xFF 0x02 0xFE
0x00
Write Command
Header Size Address Value
0x4B
0xFF 0x02 V
0x00
Figure 32: HumPRC TM Series Channel Hop Table Command and Response
Read Response
ACK Address Value
0x06 0x40 V
Read Response
ACK Address Value
0x4B
0x06 V
0x00
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Figure 33 shows the RF channels used by the HumPRC
shows the hop sequences referenced by channel number. The default hop
sequence is 0.
HumPRC TM Series RF Channels
Channel Number Frequency (MHz)
0 863.05
1 863.15
2 863.25
3 863.35
4 863.45
5 863.55
6 863.65
7 863.75
8 863.85
9 863.95
10 864.05
11 864.15
12 864.25
13 864.35
14 864.45
15 864.55
16 864.65
17 864.75
18 864.85
19 864.95
20 865.05
21 865.15
22 865.25
23 865.35
24 865.45
25 865.55
26 865.65
27 865.75
28 865.85
29 865.95
30 866.05
31 866.15
32 866.25
33 866.35
34 866.45
Figure 33: HumPRC TM Series RF Channels
Series. Figure 34
TM
Channel Number Frequency (MHz)
35 866.55
36 866.65
37 866.75
38 866.85
39 866.95
40 867.05
41 867.15
42 867.25
43 867.35
44 867.45
45 867.55
46 867.65
47 867.75
48 867.85
49 867.95
50 868.05
51 868.15
52 868.25
53 868.35
54 868.45
55 868.55
56 868.65
57 868.75
58 868.85
59 868.95
60 869.05
61 869.15
62 869.25
63 869.35
64 869.45
65 869.55
66 869.65
67 869.75
68 869.85
69 869.95
– –
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