MPH-02, MPB-02, MPD-02
Handling, Diagnostic and Service Functions
10-67
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Note:
If there isn’t any valid trigger signal available when the
oscilloscope function is activated, bit 7 for "trigger error" is set
in parameter
P-0-0029, Oscilloscope: status word
.
The parameter
P-0-0026, Oscilloscope: trigger signal selection
determines which signal is monitored with regard to the parameterized
edge reversal or threshold value.
Besides the triggering of parameter contents, the drive provides the
possibility of recording any internal signal, i.e. memory address (patch
function).
Note:
Using the patch function is only possible with information
about the structure of the internal data memory; therefore, this
function can be used effectively only by the developers of the
IndraDrive firmware.
In order to trigger at internal signals (memory address contents),
P-0-0485, Patch function 1, display
or
Patch function 2, display
have
to be configured in P-0-0026.
See also "Extended Diagnostic Possibilities: Patch Function" in the same
chapter
Internal or External Trigger
The kind of trigger can be selected in parameter
P-0-0028,
Oscilloscope: control word
.
P-0-0028, bit 1:
•
bit 1 = 0
→
internal trigger (without offset measurement)
•
bit 1 = 1
→
external trigger (with offset measurement)
The trigger event is the point of time at which trigger signal (P-0-0026)
and trigger level (P-0-0027) are matching, taking the determined trigger
edge into account (P-0-0030). When the trigger event occurs, the internal
trigger is released.
When "internal trigger" is selected (P-0-0028; bit 1 = 0), the external
trigger source (P-0-0036, bit 0) is not taken into account. Until the trigger
event is reached the current status of the comparison "signal/trigger level"
is displayed in
P-0-0029, Oscilloscope: status word
.
When the trigger event has been reached, the bit "internal trigger event"
is set in
P-0-0029, Oscilloscope: status word
and recording is
continued until the defined number of measured values after trigger event
(P-0-0033) has been reached. Only then the bit "delay function
completed" is set (P-0-0029; bit
4). Setting this bit terminates the
complete recording. Independent of the trigger source, the bit indicates
the end of the recording.
When internal trigger source has been selected, the status bit "trigger
function completed" (P-0-0029, bit 3) is set simultaneously with the bit for
"internal trigger event" (P-0-0029, bit 2) (see status diagram).
Triggering at Any Signal
Patch Function
Trigger Event
Internal Trigger
(without Offset Measurement)
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