Xylem 205547 Profibus Communication Modules - Manual (Page 14)

2.4 LED Signals
LED signals
RX
Indicating that the module receives data from the display (Modbus
Master)
TX indicating that the module sends data to display (Modbus Master)
3V3 There is supply to the module from the display
prof Indication of Profi bus status Off = No DP Exchange / on = DP Exchange
uC
Indication of the module’s status
(LED is lit for 1/4s and 1/4s break, end signifi ed by a break in 2s)
If the Profi bus is mounted in a Master-unit the break will leave the LED ON
If the Profi bus is mounted in a Slave-unit the break will leave the LED OFF
OFF uC is not running
Status - LED signals (blinks per sequence)
1 Profi bus data exchange OK
2 Init Profi bus in progress
3 Waiting for Profi bus parameter
4 Waiting for Profi bus confi guration
5 Basic hardware Okay, //5 error
10 Profi bus Data exchange is not ready
11 Profi bus not offl ine error
12 Profi bus DP Error
30
Fatal Error in Profi bus hardware (Check connections and hardware. turn
off power else replace Profi bus module)
Communication Modules