21
6. Appendices
A RS232 port signal
Signal Pin Flow
RX 2
Input
→
TX 3
Output
←
GND 5
B RS485 port signal diagram
RTX+
RTX-
GND
C FATEK/TCP/UDP Communication Protocol
The communication protocol of FATEK TCP/UDP embeds the FATEK serial
communication message in the TCP or UDP data packet. The port number
used to convey the FATEK TCP/UDP message is configurable (default is
500, refer 5.3.7 for detail).
D Modbus/TCP Communication Protocol
The document of communication protocol of Modbus/TCP can be
referenced at the web site
http://www.modbus.org
. The port number used
to convey the Modbus/TCP message is 502.
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