86 • Fieldbus CouplerFieldbus Coupler 750-341WAGO-I/O-SYSTEM 750ETHERNET TCP/IP3.1.9.3 Supply voltage statusThe two green LED’s in the coupler supply section, display the status of thesupply voltage. The left LED (A) indicates the status of the 24 V supply forthe coupler. The right hand LED (‘B‘ or ‘C‘) displays the status of the fieldside supply (i.e., the power jumper contacts).LED Meaning Trouble shootingAGreen Operating voltage for the system exists.OFF No operating voltage for the system. Check the supply voltage (24Vand 0V).B or CGreen Operating voltage for the power jumpercontacts exists.OFF No operating voltage for the the powerjumper contacts.Check the supply voltage (24Vand 0V).
