Attribute ValueDefault value –Table 7.203 0x5000: Signal Tracer ControlWriting 1 to Trace control (sub-index 2) starts the trace. Writing 0 aborts a running trace.Trace sample count (sub-index 3) defines the amount of data to trace; each channel collects the indicated number ofsamples.If the process data to be traced is changing slowly, it can be set to sample every Nth time by writing N to Trace subsampling(sub-index 4). The value 0 is treated like a 1.Trace pre-trigger count (sub-index 5) specifies how much pre-trigger history the trace will contain. Trigger will not occur untilat least the specified number of samples has been recorded.Trace trigger variable ID (sub-index 6) selects the signal to be used as the trigger source.Trigger level (sub-index 7) gives the level the signal selected for triggering has to cross to generate the trigger event.Trace buffer size (sub-index 8) returns the size of the memory set aside by the servo drive for tracing. It may be different ondifferent servo drive sizes. The trace sample count, multiplied by the number of channels must not exceed this value.Trace info flags (sub-index 9) describes some features relevant for the trace. Only bit 0 is defined and is set to tell the PLCthat the trace data per channel is 32 bit wide. See chapter 9.2.3 Trace Signals for the list of defined trace signals.Bit Name Definition3–0 ChannelCount Specifies how many signals the servo drive should trace (1–8). Cannot be changed while atrace is active.5, 4 TaskLevel Specifies the sampling frequency for the trace data.01: Realtime task10: Fast task11: Slow task6 TriggerSlope 1: rising slope;0: falling slope7 Mode 1: data acquisition depends on trigger input;0: acquisition starts with start command8 HasTriggered 1 if trigger event has occurred13–9 Reserved –14 DataReady 1 if all requested data has been traced and can be downloaded.15 Acquiring 1 if data acquisition is in progress. No trace set-up changes are possible during this time.Table 7.204 Definition of Bits for the Trace Control Flags7.19.2 Parameter: Signal Trace Channel IDs (0x5001)This object is used to define the process data signals that will be traced. The object is not visible in the LCP, so the sub-indexes do not have LCP parameter numbers.Attribute ValueIndex 0x5001Name Signal trace channel IDsObject code ArrayData type UNSIGNED32Servo Drive Parameter Descr... Programming GuideMG36D102 Danfoss A/S © 01/2017 All rights reserved. 3297 7
