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NE-4100 Series User’s Manual Serial Command Mode
9-16
Determining the Active Mode
If you need to verify whether or not the module is operating in serial command mode, there are
two methods available: by Network Enabler Administrator or by serial console. In Network
Enabler Administrator, you may open a module’s configuration window and determine if it is in
serial command mode in the Information panel.
In the example above, the status is Data Mode, which indicates normal data transmission. For
serial command mode, the status would be Command Mode.
You may also verify if the module is in serial command mode by attaching a serial console to the
serial port (P0). If the module is in serial command mode, it will respond with a sequence of
characters after receiving the serial command end character CR, as shown below.
Command sent by serial device Module’s reply
CR “<E” + CR (0x3C, 0x45, 0x0D)
CR + LF (0x0D, 0x0A) “<E” + CR (0x3C, 0x45, 0x0D)
Error command “<3” + CR ( 0x3C, 0x33, 0x0D)
Therefore, you can determine if a module is in serial command mode by sending CR to the module
seeing if the module replies with “<E” + CR.