Communication Protocol Rs232 - Bicker UPSI-1208D User Manual

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.
Control
Byte
Byte 0 Byte 1
Size of
Data
Packet
ASCII
=
'SOH'
'Size of
(0x01)
Header' +
'Size of
used Data'
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
Data length
Stop bit
Parity
Connection data CDC VCOM
Baudrate
Data length
Stop bit
Parity
58
Transfer Packet
Data Packet
Header
Byte 2 Byte 3
Command Command
Index from List
38400
8-bit
1
disabled
Not relevant
8-bit
1
disabled
UPSI-1208(D) | UPSI-2406(D)
D A T A
Byte 4 to 254 (can be null)
Transfer or Received Data
Control
Byte
Last Byte
ASCII 'EOT'
(0x04)