The yellow LED next to the USB connector will light up any time the PC recognizes this
device. There is a blue power LED inside the adapter visible by looking into the
adapter through the slot next to the USB adapter. The power LED should always be on
if connected to the PC. The yellow LED will only come on when recognized by PC
software.
The LEDs next to the terminal block indicate network traffic on the MS/TP network.
The Token LED flashes green each time the adapter passes the token. The adapter
functions as another MS/TP device on the network, and gets into the token passing
loop just like any other MS/TP device.
The PFM LED flashes yellow each time the adapter sends a Poll For Master (PFM).
The Data LED flashes green each time a good packet other than token or PFM is
received, or a packet other than token or PFM is sent, by the adapter.
The Error LED flashes each time a valid packet is received by the adapter, but resulted
in an error. The Error LED can also indicate a timeout waiting for the slave device to
respond (typically the device being configured).
2. Installation and Connections
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