Multifunctional serial to Ethernet module user manual
www.tcp232.net
Jinan USR IOT Technology Co., Ltd
Page23
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9
5.
5.
5.
5. Specific
Specific
Specific
Specific functions
functions
functions
functions
5.1.
5.1.
5.1.
5.1. Hardware
Hardware
Hardware
Hardware flow
flow
flow
flow control
control
control
control
RS232 interface support hardware flowcontrol
（
RTS/CTS
）
Pin name
Description
IO type
Operater
RTS
Request to Send
O
module
CTS
Clear to Send
I
Outside device(PC)
Diagram 5-1 Pin description
When RTS = 0, enable the other side to send, at this time, TTL is 0 volt, RS232 is -3V ~
-15V;
When CTS = 0, represent module is enabled to send, at this time, TTL is 0 volt, and RS232 is
-3V ~ -15V;
When the logic is reverse, represent that disable the other side to send or was disabled the
module to send.
When connect with PC’s RS232 interface, we can use the serial cable(cross).
5.2.
5.2.
5.2.
5.2. User
User
User
User MAC
MAC
MAC
MAC address
address
address
address
User MAC address default is 6 bytes of 0xff
，
that is: FF-FF-FF-FF-FF-FF,
If defaults
，
use the factory MAC address such as: ac- cf-23-20-fe-3d;
If not, user MAC address will take effect.
When modify this address, insert ‘-’ between bytes, or insert nothing. Click ‘Update Settings’
to save parameters, reset to take effect.
Diagram 5-2 user MAC address
In Current config and status, can see the currently MAC address in use. Diagram below is
using the factory MAC.
