78
Diagnostics
WAGO-I/O-SYSTEM 750
750-306 DeviceNet
TM
Fieldbus Coupler
Manual
Version 2.0.0
•
After the second break, the third flashing sequence starts (approx. 1 Hz):
The I/O LED blinks twelve times.
Error argument 12 means that the internal data bus is interrupted behind the
twelfth I/O module.
The thirteenth I/O module is either defective or has been pulled out of the
assembly.
Table 35: Blink code- table for the I/O LED signaling, error code 1
Error code 1: “Hardware and configuration error”
Error
Argument
Error Description
Solution
-
Invalid check sum in
the parameter area of
the fieldbus coupler.
1. Turn off the power supply for the node.
2. Replace the fieldbus coupler.
3. Turn the power supply on again.
1
Overflow of the
internal buffer
memory for the
attached I/O
modules.
1. Turn off the power for the node.
2. Reduce the number of I/O modules.
3. Turn the power supply on again.
4. If the error persists, replace the fieldbus coupler.
2
I/O module(s) with
unknown data type
1. Determine the faulty I/O module by first turning off the
power supply.
2. Plug the end module into the middle of the node.
3. Turn the power supply on again.
4. - LED continues to flash? -
Turn off the power supply and plug the end module into
the middle of the first half of the node (toward the
fieldbus coupler).
- LED not flashing? -
Turn off the power and plug the end module into the
middle of the second half of the node (away from the
fieldbus coupler).
5. Turn the power supply on again.
6. Repeat the procedure described in step 4 while halving
the step size until the faulty I/O module is detected.
7. Replace the faulty I/O module.
8. Inquire about a firmware update for the fieldbus coupler.
3
Unknown module
type of the
Flash program
memory
1. Turn off the power supply for the node.
2. Replace the fieldbus coupler.
3. Turn the power supply on again.
4
Fault when writing in
the Flash program
memory.
1. Turn off the power supply for the node.
2. Replace the fieldbus coupler.
3. Turn the power supply on again.
5
Fault when deleting
the Flash memory.
1. Turn off the power supply for the node.
2. Replace the fieldbus coupler.
3. Turn the power supply on again.