F3  AS01DNET enters the test mode 
Switch  the function switch  IN1 from On to Off and re-power 
F4  BUS-OFF 
1.  Check if the network cable is normal 
and the shielded cable is 
grounded. 
2.  Check if the baud rates of all nodes in the network are same. 
3.  Check if the start and end of the network cable are both connected 
with a 121Ω terminal resistor. 
4.  Re-power AS01DNET-A.   
F5  No network power   
1.  Check if the network cable is normal.   
2.  Ensure that the network power is normal.   
  F6 
Internal error; Flash or RAM 
check error   
If the error still exists after re-power, send AS01DNET-A back for 
repair. 
F8 
Error produced in factory 
manufacturing 
If the error still exists after re-power, send AS01DNET-A back for 
repair.   
F9 
Internal error; EEPROM access 
failure 
If the error still exists after re-power, send AS01DNET-A  back for 
repair. 
FA  Invalid configuration data 
1.  Configure the network correctly and re-download it to AS01DNET-
A. 
2.  Check if the node address of one slave in the scan list is the same 
as that of AS01DNET-A. 
E0 
Identification parameters returned 
from the slave do not match the 
configuration data. 
1.  Check if there is any change in node ID of the slave in the 
network. 
2.  Check if some node device in the network is replaced. 
3.  Re-configure the network. 
E1 
I/O Data size returned does not 
match that in the scan list.   
Re-configure I/O data size of the slave, download the configuration to 
AS01DNET-A and run the PLC.   
E2 
The slave device in the scan list 
does not exist or is offline when 
AS01DNET-A is in master mode.   
1.  Check if there is a change in the node address of the slave. 
2.  Check if the c
ommunication cable is disconnected or connected 
loosely. 
3.  Check if the bus cable length exceeds the maximum transmission 
distance. If so, the system may not be stable. 
The I/O connection between the 
slave AS01DNET-A and the 
master is broken when 
AS01DNET-A is in slave mode.   
E3 
AS01DNET-A fails to transmit 
data. 
1.  Make sure that the connection between AS01DNET-A and the 
network is normal. 
2.  Check if the baud rate of AS01DNET-A is the same as that of 
other node in the network. 
E4 
Error detected in sequence of 
fragmented I/O data from the 
slave device. 
Check if the slave is operating normally. 
E5 
The slave device returns error 
when AS01DNET-A attempts to 
communicate with it. 
Check if the slave is operating normally.   
E6 
IO data size returned from the 
slave is bigger than that 
configured in Scan List.   
Check that the IO data size of the slave should be the same as that 
configured in Scan List.   
E7 
AS01DNET-A is checking MAC 
ID. 
If the code is displayed long, do the troubleshooting according to the 
following steps.   
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Call +1(800)985-6929 To Order or Order Online At Deltaacdrives.com