CANopen Slave Communication Module IFD9503 4 LED Indicators & Trouble-shooting There are 3 LED indicators on IFD9503, RUN, ERROR and SCAN, for displaying the connection status of the communication in IFD9503. 4.1 RUN LED 4.2 ERROR LED 4.3 SCAN LED 5 Object Dictionary 1. Communication objects in the object dictionary: DVP-PLC Application Manual 35 LED Status IFD9503 Status How to deal with it Off No power Check the power of IFD9503 and make sure the connection is normal. Green light 1 flash Stop Green light flashes Pre-operation Green light On Operating Red light On NODE-ID error Check if the setting of NODE-ID of IFD9503 is correct.
LED Status IFD9503 Status How to deal with it Off No error IFD9503 operation is normal. Red light 2 flashes Erroneous control occurs. 1. Check if the connection between IFD9503 and the master station is intact. 2. Check if the communication between IFD9503 and the master station is normal. Red light On bus OFF 1. Check if the bus connection is normal. 2. Re-power IFD9503. LED Status IFD9503 Status How to deal with it Off No power Check the power of IFD9503 and make sure the connection is normal. Green light flashes The correct information of the equipment connected has not been detected. Re-connect IFD9503 to the equipment.
Green light On The communication with the equipment connected is normal. Red light flashes CRC check fails 1. Check if the communication cable between IFD9503 and the equipment is correct. 2. Check if there is electromagnetic interference nearby. Red light On Connection fails, or no connection 1. Check if the communication format of the equipment is correct. 2. Check if IFD9503 and the equipment are correctly connected. 3. Restart the connection and make sure the communication cable meets the specification.
Access Index Sub-index Object name Data type Default autorization H’1000 H’00 Equipment type Unsigned 32 bits R 0x00000000 H’1001 H’00 Error register Unsigned 8 bits R 0 H’1003 Predefined error field H’00 Number of errors Unsigned 8 bits R 0 H’01 Standard error field Unsigned 32 bits R 0