Chapter 12  Troubleshooting 
12-19 
Error 
Description  Solution 
16#E283 
The network module IP of the control 
mode CPU on the main backplane slot 3 
cannot be detected. 
1. Make sure the network cables of the network 
modules on the main backplane slot 3 are 
well-connected both on the control mode CPU 
and standby mode CPU.     
2. If the network module’s network cable of the 
control mode CPU on the main backplane slot 3 
is connected to the network port 1, the network 
module’s network cable of the standby mode 
CPU on the main backplane slot 3 must be 
connected to the network port 1 as well.     
3. Mare sure the network modules of the control 
mode CPU and the standby mode CPU on the 
main backplane slot 3 are on the same physical 
16#E284 
The network module IP of the control 
mode CPU on the main backplane slot 4 
cannot be detected. 
1. Make sure the network cables of the network 
modules on the main backplane slot 4 are 
well-connected both on the control mode CPU 
and standby mode CPU.     
2. If the network module’s network cable of the 
control mode CPU on the main backplane slot 4 
is connected to the network port 1, the network 
module’s network cable of the standby mode 
CPU on the main backplane slot 4 must be 
connected to the network port 1 as well.     
3. Mare sure the network modules of the control 
mode CPU and the standby mode CPU on the 
main backplane slot 4 are on the same physical 
16#E285 
The network module IP of the control 
mode CPU on the main backplane slot 5 
cannot be detected. 
1. Make sure the network cables of the network 
modules on the main backplane slot 5 are 
well-connected both on the control mode CPU 
and standby mode CPU.     
2. If the network module’s network cable of the 
control mode CPU on the main backplane slot 5 
is connected to the network port 1, the network 
module’s network cable of the standby mode 
CPU on the main backplane slot 5 must be 
connected to the network port 1 as well.     
3. Mare sure the network modules of the control 
mode CPU and the standby mode CPU on the 
main backplane slot 5 are on the same physical