Mitsubishi MELSEC-Q EQ-V680D1 User Manual page 49

5. THINGS YOU NEED TO KNOW BEFORE PROGRAMMING
Address
CH1 CH2
Un\G42 Un\G4042
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(4) Communication success rate measurement
Communication success rate measurement measures the communication success
rate.
The test executes communication with the ID tag 100 times, and measures the
communication success rate.
The measurement result is stored in the processing result monitor storage area
(Un\G42, Un\G4042).
Point
(1) The communication success rate is measured by Read. The rate is measured
using the contents set in advance in buffer memory (Un\G8000 to Un\G8002)
(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 "00C1 " in the test operation mode specification area (Un\G8000), the test
H
operation antenna number in the test operation antenna specification area
(Un\G8001), and the number of test operation bytes in the number of processed
points during testing specification area (Un\G8002).
3. Execute TEST mode.
The communication success rate is measured based on the buffer memory
(Un\G8000 to Un\G8002) 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 communication success rate measurement.
The communication success rate is measured, and the measurement result is
stored in the processing result monitor storage area (Un\G42, Un\G4042).
Table 5.4 Communication Success Rate Measurement Result
During operation
When abnormal
Data Format
"C1" + "Measurement result"
"E0" + "Error code"
Measurement Result / Error Code
01 to 99 [BCD] (%)
EE: When the measurement
result is 0%
FF: When the measurement
result is 100%
7C: Antenna error
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