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Unidrive M Regen Design Guide 219
Issue Number: 4
If Scope Trigger (09.059) = 0, the scope can be triggered based on the level of a parameter defined by Scope Trigger Source (09.060) and the
Scope Trigger Threshold (09.061). This source operates in the same way as the trace sources and a direct comparison is made between the actual
parameter value and the threshold. Decimal places are ignored. The threshold detector output is 1 when the value from the scope trigger source is
greater than Scope Trigger Threshold (09.061). If Scope Trigger Source (09.060) = 0.000, or it is used to select a parameter that does not exist or is
non-visible, then the output of the threshold detector is 0.
Single (0):
If Scope Arm (09.064) is set to 1 the scope starts to acquire pre-trigger data (i.e. enough data to provide information for the pre-trigger period) and
Scope Data Not Ready (09.065) is set to 1. The scope can then be triggered on the next trigger event (i.e. a rising edge on the trigger input of the
main scope block). Note that the scope can only be triggered once the required amount of pre-trigger data has been sampled. Failure to do this will
result in the scope function not triggering correctly. When the trigger event occurs Scope Arm (09.064) is set to 0, and when the post-trigger data has
been stored Scope Data Not Ready (09.065) is set to 0. If Scope Auto-save Mode (09.070) is non-zero, the data in the scope trace buffer is saved to
a non-volatile media card fitted in the drive. When the save is complete (or data cannot be saved, i.e. no card fitted or no space left) the scope is
ready again to receive data. If Scope Arm (09.064) is set to 1 the scope will start to acquire data again.
It is possible to read scope files via comms or into an option module. However, scope file transfer can only be initiated when Scope Arm (09.064) = 0,
Scope Data Not Ready (09.065) = 0, Scope Saving Data (09.066) = 0 and at least one trace has been set up. While the file transfer is in progress
Scope Saving Data (09.066) is set to 1.
The scope system is reset under any of the following conditions:
1. At power-up.
2. If the drive is reset when Scope Trace 1 Source (09.055) to Scope Trace 4 Source (09.058) have been modified.
3. The drive mode is changed.
4. If Scope Mode (09.063), Scope Sample Time (09.067) or Scope Trigger Delay (09.068) are modified.
When the scope is reset Scope Arm (09.064) is reset to 0 and the trace data is all cleared to 0.
Normal (1):
The scope operates in the same way as single mode except that Scope Arm (09.064) is automatically set back to 1 after a time delay of 1s once the
post-trigger data has been acquired, and the scope data has been saved to a non-volatile media card if Scope Auto-save Mode (09.070) > 0.
09.061 Scope Trigger Threshold
RW Num US
-2147483648 to 2147483647
0
09.062 Scope Trigger Invert
RW Bit US
Off (0) or On (1)
Off (0)
09.063 Scope Mode
RW Txt US
Single (0), Normal (1), Auto (2)
Single (0)
Value Text
0 Single
1Normal
2Auto
Scope trigger with Scope Mode (09.063) = Single (0) and Scope Auto -save Mode (09.070) > 0
Scope Arm (09.064)
Scope Data Not
Ready (09.065)
Scope Saving Data
(09.066)
Main scope block
trigger input
Acquiring post-
trigger data
Acquiring pre-
trigger data
Saving data to
NV media card
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