Error handling and diagnostics
CX50x0 75Version: 1.9
6.1.3 LEDs of the power supply in E-bus mode
After switching on, the power supply immediately checks the connected Bus Terminal configuration. In the E-
Bus mode the “L/A” led lights up. It starts blinking when there is traffic on the bus.
Display LED Meaning
Us 24 V Power supply for the CPU module
The LED lights green if the power
supply is correct.
Up 24 V Power supply for terminal bus. The
LED lights green if the power supply
is correct.
L/A off E-bus not connected
on E-bus connected / no data traffic
flashing E-bus connected / data traffic on the
E-bus.
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