Code 4240: Runtime overflow for IPO cycle or position controller cycle, IP %1

Parameters: %1 = Program location Definitions: The settings for the interpolation and position cont rol cycle were modified before the last power-up such that too little computing time is now available for the requisite cyclic task. The alarm occurs immediat ely after power-up if too little runtime is available even when the axes are stationary and the NC program has not started. However, task overflow can occur only when computation-intensive NC functions are called during program execution. Reaction: NC not ready. The NC switches to follow-up mode. Mode group not ready, also effective for single axes NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Alarm reaction delay is cancelled. Diagnostics Manual (DAsl), 03/2009 Remedy: Please inform the authorized personnel/service department. Take greater care when optimizing the cl ock times MD10050 $MN_SYSCLOCK_CYCLE_TIME, MD10060 $MN_POSCTRL_SYSCLOCK_TIME_RATIO and/or MD10070 $MN_IPO_SYSCLOCK_TIME_RATIO. The test should be performed with an NC program that represents the highest possible control load. To be on the safe side, a margin of 15 to 25% should be added to the times determined in this way. Program Continuation: Switch control OFF - ON.