AH500 Module Manual 11.7.1 Indicator Diagnosis NS indicator MS indicator 11-104 LED status Indication How to deal with Off No power or bus OFF 1. Make sure that AHRTU-DNET-5A is powered and is connected normally. 2. Check if the communication is normal and the baud rate of AHRTU-DNET-5A is the same as that of the master. Green light blinking No connection Configure AHRTU-DNET-5A in the DeviceNet software properly and download the configuration between AHRTU-DNET-5A and the DeviceNet master Green light ON I/O data transmission -- between AHRTU-DNET-5A and the DeviceNet master is normal.
Red light blinking A timeout occurs Refer to the error codes on the digital displayer to shoot the trouble. when there is an I/O connection between AHRTU-DNET-5A and the DeviceNet master. Red light ON Network error, ID duplication, no network power, or bus-off 1. Make sure all the devices have their unique node address. 2. Check if the network installation is correct 3. Check the baud rate of AHRTU-DNET-5A is the same as that of the bus. 4. Check if the node address of AHRTU-DNET-5A is valid. 5. Check if the network power is normal. LED status Indication How to deal with Off No power Make sure that AHRTU-DNET-5A is powered and is connected normally. Green light blinking 1.
AHRTU-DNET-5A is 1. Configure AHRTU-DNET-5A in the DeviceNet software properly and download the configuration. 2. Switch PLC to RUN state. waiting for the I/O data of the DeviceNet master 2. No I/O data between AHRTU-DNET-5A and the DeviceNet master 3. PLC connected to the master is in STOP state Green light I/O data transmission is normal -- ON Red light blinking No network power, configuration problem or module warning 1. Check if the network power is normal. 2. Reset the internal parameters in AHRTU-DNET-5A. 3. Check if there is any error or warning in some module.