Mitsubishi MELSEC-Q EQ-V680D1 User Manual page 51

5. THINGS YOU NEED TO KNOW BEFORE PROGRAMMING
Address
CH1 CH2
Un\G42 Un\G4042
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(6) Noise level measurement
Noise level measurement allows you to verify the effects of noise countermeasures
on the noise source. The test measures the noise level of the set surrounding
environment. The measurement result is stored in the processing result monitor
storage area (Un\G42, Un\G4042).
Point
(1) The noise level is measured using the contents set in advance in buffer memory
(Un\G8000, Un\G8001) (Refer to Section 3.4.2(14) to (16)).
1. Set the RUN/TEST mode switching method.
• When you want TEST mode to be started using the test switch only, set bit 0 of
intelligent function module switch 2 to "1".
• When you want to start TEST mode using the test mode execution request
(Y15), set bit 0 of intelligent function module switch 2 to "0".
2. Set TEST mode operation.
Set "00C0 " in the test operation mode specification area (Un\G8000), and the
H
test operation antenna number in the test operation antenna specification area
(Un\G8001).
3. Execute TEST mode.
The noise level is measured based on the buffer memory (Un\G8000,
Un\G8001) setting conditions.
• When bit 0 of intelligent function module switch 2 is set to "1", start TEST mode
by switching the test switch to "TEST".
• When bit 0 of intelligent function module switch 2 is set to "0", start TEST mode
by the above method or by turning the test mode execution request (Y15) ON
in RUN mode.
4. Start noise level measurement.
The noise level is measured, and the measurement result is stored in the
processing result monitor storage area (Un\G42, Un\G4042).
Table 5.6 Noise Level Measurement Result
During operation
When abnormal
Data Format
"C0" + "Measurement result"
"E0" + "Error code"
Measurement Result / Error Code
00 to 99 [BCD] (maximum value)
7C: Antenna error
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