RAD-900-...
PHOENIX CONTACT
3827_en_B
TX LED, transmit data
The green TX LED indicates communication with the RS-232/RS-485 interface. The
wireless module is transmitting data.
RX LED, receive data
The green RX LED indicates communication with 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 remove an I/O extension module
–
Using a CONFSTICK 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. Read in has been completed when the DAT LED stops
flashing.
RF link relay
The RF link relay in the wireless module diagnoses the state of the wireless connection. The
relay picks up when the wireless connection is established. If the wireless module does not
receive a data packet correctly over a period of 10 seconds, the relay drops out. The relay
picks up again automatically when the wireless connection is re-established.
The RF link relay has been designed as a PDT contact.
RSSI test socket
A voltage measuring device can be connected to the RSSI test socket to measure the RSSI
voltage between 0 V ... 3 V. 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 2.0 V DC. This results in a power reserve of
approximately 10 dB which ensures communication even in the event of unfavorable
transmission conditions.
When using “Wire in/Wire out” mode, the TX LED of the master wireless module always
flashes to scan for RAD-RS485-IFS modules.
The RF link relay can be used as a fault message contact to indicate the failure of the
wireless connection to the controller.