http://www.wenshing.com.tw; http://www.rf.net.tw
RD-232HI-HP9M Series Instruction Manual P.8
3
rd
~ 4
th
Byte: group ID (GID), set-up range: 0000
～
FFFF
5
th
Byte: Equipment ID (SID), set-up range: 00
～
FE
6
th
Byte: invalid character, fixed as 0x00
7
th
Byte: transmitting rate range: 00 ~ 07. Generally, the RF transmitting rate
should be greater than interface rate to avoid data error.
8
th
~ 10
th
Byte: Working frequency calculation:
MHz*1000=KHz and then transfer to Hexadecimal System.
Example:
When it is at 434MHz working frequency,
433
*1000=433000=0x06 9B 68,
then to fill in
06
at 8
th
Byte, fill in
9B
at 9
th
Byte, fill in
68
at 10
th
Byte. When it is
at 434MHz working frequency, 434*1000=434000=0x06 9F 50 then to fill in
06 at 8
th
Byte, fill in 9F at 9
th
Byte, fill in 50 at 10
th
Byte.
11
th
Byte:
Bit0~Bit2:
output power range: 0 ~ 7
Output Power
dBm
Set Value
Hex (Bit0
～
Bit2)
27
0
000
29
1
001
30
2
010
32
3
011
33
4
100
35
5
101
36
6
110
37
7
111
Bit3 ~Bit5:
Invalid character, fixed as 000.
Bit6~Bit7:
Device working in 4 modes as stating below:
Mode 1 (Long-figure data mode: setup value 00)
In this mode, all devices with same GID value can receive data. It can
employ in the situation where data capacity greater than 127Bytes.
Mode 2 (ID data mode 1: setup value 01)
In this mode, all devices with the same GID value could transmit signal
to specified SID to achieve one-to-multiple-transmission, but the single
data should not exceed 127Bytes.
Example:
SID value is 55 from device A, SID value is 88 from device B and both of
them have the same GID. During mode 2, device A is going to transmit a
5-byte data 0x1234567890 to B so A sends a 6-byte data
0x881234567890, and then B receives a 6-byte data 0x551234567890,
where the first byte stands for SID of A.
Rate(bps)
1200
2400
4800
9600
19.2K
38.4K
57.6K
115.2K
Value
0
1
2
3
4
5
6
7
Rate(bps)
1800
3600
7200
14.4K
28.8K
57.6K
84K
172.8K
