Technical data

62 • Fieldbus coupler/controller
Fieldbus coupler 750-310
WAGO-I/O-SYSTEM 750
CC-Link
Fault argument Fault description
Fault code 9: CPU TRAP fault
1 Illegal Opcode
2 Stack overflow
3 Stack underflow
4NMI
* The number of blink pulses (n) indicates the position of the I/O module. I/O modules
without data are not counted (i.e. supply module without diagnosis)
Example: the 13
th
I/O module is removed.
1. The "I/O" LED generates a fault display with the first blink sequence (approx. 10 Hz).
2. The first pause is followed by the second blink sequence (approx. 1 Hz). The "I/O"
LED blinks four times and thus signals the fault code 4 (internal bus data fault).
3. The third blink sequence follows the second pause. The "I/O" LED blinks twelve
times. The fault argument 12 means that the internal bus is interrupted after the 12
th
I/O module.
3.1.5.4 Supply Voltage Status
There are two green LEDs in the coupler supply section to display the supply
voltage. The left LED (A) indicates the 24 V supply for the coupler. The right
hand LED (C) indicates the supply to the field side, i.e. the power jumper
contacts.
LED Color Meaning
A green Status of the operating voltage – system
C green Status of the operating voltage – power jumper contacts