Hello sir
I am transmitting same transmit request, but i am getting different response each time
tx:7E A0 8D 00 02
04 01 21 10 E1
42 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
00 00 00 00 00
CF 66 7E
rx:
7E //Frame header
A0 //Format type
0A // Frame length
21 00//source and destination address
02 //Control Field
04 01// DISCONECT
1F // Frame type value
C4 3D // Frame check sequence
7E//frame trailer
7E A0 0F 21 00 02 04 01 97 27 C5 10 00 04 C6 06 7E
7E //Frame header
A0 //Format type
0F // Frame length
21 00 //source and destination address
02 //CONTROL FEILD--S-frame
40 01 //LOGICAL ADRESS OF REQUESTING DEVICE
97 //fRAME TYPE Value
27
C5
10 00 04 // Data="100004"
C6 06 // Frame check sequence
7E //frame trailer
Hi, There is frame counter…
Hi,
There is frame counter in HDLC framing and it will make each request and reply different, even you read the same attribute from the meter.
BR,
Mikko