Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
B-64
8 Troubleshooting
8.5 4AD Initialization and Test Program
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4AD/FX
3UC
-4AD (4-channel Analog Input)
8. Digital filter setting error (b11)
1) Description of error
The digital filter value (BFM #6 to #9) is not set correctly.
2) Remedy
Set the digital filter value again in the range from 0 to 1600.
Also check that the averaging is not set for the selected channel.
Also check that the averaging is not set for the selected channel.
9. Abrupt change detection value setting error (b12)
1) Description of error
The abrupt change detection value (BFM #91 to #94) is not set correctly.
2) Remedy
Check that the abrupt change detection value is in the range specified for the selected input mode. If the
value is out of the range, correct it.
value is out of the range, correct it.
10. Upper/lower limit detection setting error (b13)
1) Description of error
The lower limit error detection value (BFM #71 to #74) or the upper limit error detection value (BFM #81 to
#84) is not set correctly.
#84) is not set correctly.
2) Remedy
Check that the upper/lower limit error detection value is in the range specified for the selected input
mode. If the value is out of the range, correct it.
mode. If the value is out of the range, correct it.
11. Addition data setting error (b15)
1) Description of error
The addition data (BFM #61 to #64) is not set correctly.
2) Remedy
Set the addition data again in the range from -16000 to +16000.
8.5
4AD Initialization and Test Program
If the remedies above cannot solve the problem, initialize and then check the conditions of the 4AD using the
test program.
test program.
→ For a detailed description of 4AD initialization program, refer to Subsection 7.4.
→ For a detailed description of the test program, refer to Chapter 4.