Ch a pt er 1 5 C AN o pe n Communication M o du l e AH 1 0CO P M15-3515.6 Error Diagnostics and Troubleshooting15.6.1 LED Indicators and TroubleshootingAH10COPM-5A has two LED indicators—a RUN LED indicator and an ERROR LED indicator. TheLED indicators indicate the current states of the module. RUN LED indicatorLED indicator Description SolutionThe light is OFF. AH10COPM-5A isdisconnected.Check whether the AH500 system used ispowered.The green lightflashes once.AH10COPM-5A stopsrunning.AH10COPM-5A is downloading a networkconfiguration, and waits to complete thedownloading of the network configuration.The green lightblinks.AH10COPM-5A isready to operate.If the green light is blinking when the AH500series CPU module is running, users have to1. check whether the bus cable on theCANopen network created is connectedcorrectly.2. check whether the serial communicationspeed of the master station selected isthe same as the serial communicationspeeds of the other slave stations.3. check whether the slave stationsconfigured are connected to the networkcreated.4. check whether slave stations are offline.The green light isON.AH10COPM-5A isoperational. No solution is required.Difference between the green light which flashes once and the green light which blinks:ONOF FT he green li ght fl as hes once.200 ms200 ms 1000 msONOF FT he green li ght blinks.200 ms200 ms
