Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 820 / 1218

(A) Application parameters Parameters
5 - 618
Monitoring the trace status
●
The trace status can be monitored on the operation panel by setting "38" in Pr. 52 "Operation panel
main monitor selection", Pr. 774 to Pr. 776 (Operation panel monitor selection), or Pr. 992 "Opera-
tion panel setting dial push monitor selection".
The "0(s)" to the left of the leftmost non-zero digit is (are) not shown in the monitor display.
For example, if no trace data is in internal RAM, the USB memory is not accessed, no trigger is
detected, and the trace operation is performed, "1" appears (not "0001").
●
When copying the traced data to a USB memory device, the operating status of the USB host can
be checked with the inverter LED. For the overview of the USB communication function, refer to
page 2-68.
●
During trace operation, the trace status signal (Y40) can be output.
To use the Y40 signal, set "40 (positive logic) or 140 (negative logic)" in any of Pr. 190 to Pr. 196
(output terminal function selection) to assign the function to the output terminal.
I002725E
Fig. 5-303: Monitoring the trace status
Monitor value
Trace status
1000s place 100s place 10s place 1s place
0 or no display
No trace data in
internal RAM USB memory not
accessed
Trigger not detected Trace stopped
1
Trace data in internal
RAM USB memory being
accessed
Trigger detected Trace operation
2 —
USB memory transfer
error
— —
3 — USB buffer overrun — —
Tab. 5-267: Trace status
LED status Operating status
OFF No USB connection.
ON The communication is established between the inverter and the USB device.
Flickering rapidly
Traced data is being transmitted. (In the memory mode, transmission command is being issued. In
the recorder mode, sampling is being performed.)
Flickering slowly Error in the USB connection.
Tab. 5-268: Operating status of the USB host
NOTE Changing the terminal assignment using Pr. 190 to Pr. 196 (output terminal function selection)
may affect the other functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr. 52 Operation panel main monitor selection => page 5-344
Pr. 178 to Pr. 189 (input terminal function selection) => page 5-439
1000 s place
Indicates internal RAM state.
100 s place
Indicates USB memory access state.
1s place
Indicates trace operation.
10s place
Indicates trigger state.