62
English
UPSI-1208(D) | UPSI-2406(D)
Transfer Packet
Control
Byte
Data Packet
Control
Byte
Header
D A T A
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4 to 254 (can be null)
Last Byte
ASCII
‘SOH’
(0x01)
Size of
Data
Packet
Command
Index
Command
from List
Transfer or Received Data
ASCII ‘EOT’
(0x04)
=
‘Size of
Header’ +
‘Size of
used Data’
21 Communication protocol RS232
Transfer packet - Description
The description refers to the serial interface RS232. The protocol is valid for sent and
received data as well.
Description
The data transfer always begins with a start signal (0x01) and ends with a end signal
(0x04). After the start signal was sent the „Header“ follows with a size of 3 byte. The
Header contains information about the size of the data volume, the command index and
the command ID. After transmission of the data packet the transmittance is closed with
the end signal (0x04).
Connection data RS232
Baudrate
38400
Data length
8-bit
Stop bit
1
Parity
disabled
Connection data CDC VCOM
Baudrate
Not relevant
Data length
8-bit
Stop bit
1
Parity
disabled
