NE-4100 Series User’s Manual Serial Command Mode
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Entering Serial Command Mode
Trigger Type
The module can enter serial command mode through either a hardware trigger or a software trigger,
depending on how it has been configured. Please refer to the previous section for details on how to
configure the trigger type.
Hardware Trigger
y Set up a hardware trigger with the DIO 0 channel.
y Use the trigger to pull DIO 0 to low in order to enter serial command mode. Low state must be
maintained for at least 200 ms to qualify as a valid trigger.
Software Trigger
y Define 3 characters as the software trigger.
y Send the 3 trigger characters to the serial port in rapid sequence (the characters should be
separated by less than 80 ms) to enter serial command mode. We guarantee that when
characters are spaced by more than 120 ms, the data will be treated as normal data, instead of
serial command mode trigger characters. When characters are separated by between 80 ms and
120 ms, the system will not be able to determine if the transmission is regular data, or a serial
command mode trigger.
Serial Port Parameters
For testing purposes, you will likely use a terminal emulator to send and receive data frames in
serial command mode. The module’s serial parameters may be obtained from Network Enabler
Administrator, or from the web or Telnet consoles. For example, from Network Enabler
Administrator, the settings may be found in the Configuration functions by selecting Configure
and then selecting the Serial tab. After selecting the module’s serial port, click on Settings to open
the Serial Settings window.
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