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3.0 Web Management
CommFront User Manual 22
3.4.6 RFC2217
The RFC2217 feature allows the COM port settings to be dynamically changed from
TCP/IP network. Such changes will take effect immediately but will be lost when the
device is restarted or loses power. The operating modes that support RFC2271 are:
TCP client, TCP server, UDP client, and UDP server. The RFC2217 packet does not
forward to a serial port, and it consists of 8 bytes.
Table 3: RFC2217 Protocol
COM port settings Byte 1 to 3 Byte 4 to 6 (*) Byte 7 (***) Byte 8 (**)
Baud, Data Bit,
Parity, Stop Bit
Header Baud Rate
(Decimal to Hex)
Data Bit, Parity,
Stop Bit
Checksum (Sum
of Byte 4 to 7)
9600, 8, N, 1 55 AA 55 00 25 80 03 A8
19200, 8, N, 1 55 AA 55 00 4B 00 03 4E
115200, 8, N, 1 55 AA 55 01 C2 00 03 C6
Notes:
* Byte 4 to 6 is to convert the decimal number directly to a hexadecimal
number, e.g. 9600 = 002580; 119200 = 004B00; 115200 = 01C200
** Byte 8 is to add together byte 4, 5, 6, and byte 7,
e.g. 00+25+80+03=A8; 00+4B+00+03=4E; 01+C2+00+03 = C6