Festo CTEU-DN Description, Functions And Maintenance page 52

3. Preparing for commissioning
3-8
LED display Status and significance
PS illuminates green:
– Voltage supply (Power System, PS) is OK
– Operating voltage applied
(in the approved range)
– Load voltage present (in the approved range)
X1/X2 illuminates green:
– Device is correctly connected to the bus node
– Internal communication between bus node and
device 1 or device 2 is error free
– Operating and load voltage present (in the ap-
proved range)
MNS illuminates green:
– Module status/network status (MNS) is error free
("online" operating status)
– Communication with the fieldbus and with the PLC
is OK
IO flashes green:
– I/O status, connection status is error free
– Communication with the controller (PLC) OK
1)
Display depends on whether the connected device monitors the
load voltage and reports to the bus node
2)
Separate accessory with two interfaces for connection of an addi-
tional device required
Tab. 3/11: Status LEDs after switch on – bus node con-
figured, PLC in stop mode
2)
1)
Festo P.BE-CTEU-DN-OP+MAINT-EN en 1206NH
1)