Configuration and startup
105542_en_05 PHOENIX CONTACT 47 / 198
TX LED, transmit data
The green TX LED indicates communication on the RS-232/RS-485 interface. The wireless
module is transmitting data.
As of firmware version 1.70: in I/O data mode, the TX LED on the master wireless module
flashes (RAD ID = 01). This indicates that the master wireless module is continuously send-
ing search requests to RS-485 stations.
RX LED, receive data
The green RX LED indicates communication on the RS-232/RS-485 interface. The wireless
module is receiving data.
SET button
You can confirm a station change with the SET button, without performing a power up.
Station changes include:
– Changing the RAD ID address of the wireless module
– Changing the I/O MAP address of the extension module
– Adding or removing an I/O extension module
– Using a configuration stick or memory stick
After making any change, press the SET button for at least one second to apply the settings.
The DAT LED starts flashing. The read-in process has been completed once the DAT LED
stops flashing.
RF link relay
The RF link relay in the wireless module diagnoses the state of the wireless connection. If
the device is no longer receiving the data packets correctly, the relay drops out after a while.
The relay picks up again automatically when the wireless connection is re-established. The
relay has been designed as a changeover contact.
RSSI test socket
A voltage measuring device can be connected to the RSSI test socket (2.1/2.2) to measure
the RSSI voltage from 0 V ... 3 V. You can use the table on page 46 to determine the
received signal strength based on the measured voltage. However, please note the small
voltage fluctuation due to multipath propagation.
The RSSI voltage depends on the data rate set for the wireless interface. The higher the
RSSI voltage, the better the wireless connection.
For example, the RSSI voltage may be helpful when positioning and aligning the antenna.
The recommended minimum signal strength is 1.5 V DC. This results in a power reserve of
around 10 dB, which ensures communication even in unfavorable transmission conditions.
The RF link relay can be used as a fault message contact to indicate the failure of the wire-
less connection to the controller.
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