Technical data
    BACnet/IP Controller 750-830  • 131 
  LED Signaling 
WAGO-I/O-SYSTEM 750   
BACnet/IP Controller 
Error code 4 "Physical error, internal bus" 
Error 
argument 
Error description  Solution 
    6. LED continues to flash? 
 Switch off the power and plug the end module 
 into the middle of the first half of the node 
 (toward the controller). 
 LED not flashing? 
 Switch off the power and plug the end module 
 into the middle of the second half of the node 
 (away from controller). 
7. Turn on the power supply again. 
8. Repeat procedure 6 and 7 (while halving the step 
 size) until the faulty bus module is detected. 
9. Replace the faulty bus module. 
10. If there is only one bus module left and the LED 
 continues to flash, then either this module or the 
 controller is defective. Replace the faulty 
 component. 
n*  Interruption of the 
internal bus behind the 
nth bus module with 
process data. 
1. Turn off the supply voltage of the node, replace 
 the (n+1)th bus module with process data and 
 turn on the supply voltage again. 
Error code 5 “Initialization error internal bus” 
Error 
argument 
Error description  Solution 
n*  Error in register com-
munication during inter-
nal bus initialization. 
1. Switch off the power for the node. 
2. Exchange the nth bus module with process data. 
3. Turn on the power supply again. 
Error code 6 " Node configuration error " 
Error 
argument 
Error description  Solution 
1 
Invalid MAC ID 
1. Switch off the power for the node. 
2. Replace the bus coupler. 
3. Turn on the power supply again. 
2  Initialization error 
ETHERNET hardware 
1. Restart the fieldbus coupler by turning the power 
 supply off and on again. 
2. If the error remains, replace the fieldbus coupler. 
3 Initialization error 
TCP/IP stack 
1. Restart the fieldbus coupler by turning the power 
 supply off and on again. 
2. If the error remains, replace the fieldbus coupler. 
4 Network configuration 
error (no IP address) 
1. Check the settings of the BootP server. 










