AS Series Module Manual 
11-36 
  Program Explanation 
  When M0 changes to ON, AS01DNET-A sends the request message and 000AHex is written to Class 
ID: 05>> Instance 1 >> Attribute ID: 09 of the target equipment with node ID: 01. If explicit message 
communication succeeds, the completion flag M1 changes to ON. 
  When M0 changes to ON, AS01DNET-A sends out the request message only once. If the request 
message is to be resent, the instruction DNETRW need be re-triggered. 
 
11.4.9  LED Indicators and Troubleshooting 
AS01DNET-A has two LED indicators and one digital displayer. NS LED and MS LED display the connection status of 
AS01DNET-A. The digital displayer shows the node address and error information  of  AS01DNET-A  as well as error 
information of the slave. 
 
 
11.4.9.1.  NS LED 
 
OFF 
No power;   
Or  duplicate  ID check has not been 
completed. 
1.  Check if AS01DNET-A 
is powered and the connection 
is normal.   
2. 
Make sure that at least one node can communicate 
normally. 
Green light 
blinking 
(ON:0.5s and 
OFF: 0.5s 
The connection to the DeviceNet 
network failed.   
No correction;   
Refer to Digital Displayer for troubleshooting. 
Green light ON 
Online;   
The connection to the DeviceNet 
network is normal. 
No correction 
Red light 
blinking 
(ON:0.5s and 
OFF: 0.5s 
Communication error    Refer to Digital Displayer for troubleshooting.   
Red light ON 
Network trouble, duplicate node ID, no 
network power or Bus-O FF.   
1. Make sure that all the devices in the network have 
their unique node addresses. 
2. Check if the network installation is correct. 
3. Check if the baud rates of the master and slave are 
same. 
4. Check if the network power is normal.