Bfm#29: Error Status - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U
FX -4DA (4-channel Analog Output)
3U

5.4.10 BFM#29: Error status

Error data is assigned each bit of BFM#29.
1. Assignment to each bit of BFM#29
Bit No.
b0 Error detection
b1 O/G error
b2 Power supply error
b3 Hardware error
b4
Error setting function for
b5 output setting upon PLC
stop
Upper/lower limit function
b6
setting error
Error in corrective function
setting by load resistance
b7
(Valid only in voltage output
mode)
Table output function
b8
setting error
Status automatic transfer
b9
setting error
b10 Over-scale
Disconnection detection
b11 (Valid only in current output
mode)
Setting data change
b12
prohibited
b13 to b15
2. Caution regarding error status
If the error cause is eliminated, the error bit will turn off.
The error status data automatic transfer function is not supported when connected and used with the FX5U or
FX5UC CPU module.
3. Error status data automatic transfer function (b0 of BFM#60)
If the error status with automatic transfer to data register is specified in BFM#61, the data in BFM#29 can be
transferred to a specified data register.
Only when an error is detected, data will be automatically transferred from FX
reason, the PLC does not need the program for reading data, and the scan time of the PLC can be shortened.
→ For a detailed description of the status automatic transfer function, refer to Subsection 5.4.18.
E-28
PLC User's Manual - Analog Control Edition
3UC
Item
-
-
If one of b1 to b11 is turned on, b0 will turn on.
Gain setting error: error in offset gain data or in EEPROM offset gain
setting
24 V power is not supplied properly.
Check the wiring condition or the supplied voltage.
FX -4DA may be defective.
3U
Please contact your local Mitsubishi Electric representative.
The setting value of the function for output setting upon PLC stop
(BFM#5) is not set correctly. Correctly set the value.
The setting value of the upper/lower limit function (BFM#41 to #48) is not
set correctly. Correctly reset the value.
The setting value of the corrective function by load resistance
(BFM#51 to #54) is not set correctly.
Correctly set the value.
The setting value of the table output function is not set correctly.
Correctly set the value.
The setting value of the status automatic transfer function
(BFM#61 to #63) is not set correctly.
Correctly set the value.
The analog output is out of the specified range.
Wire-break has occurred. (The details are indicated by BFM#28.)
* The bit is turned on when BFM#28 is not 0.)
Setting change is prohibited.
5 Buffer Memory (BFM)
5.4 Buffer Memory Details
Initial value: H0000
Numeric data type: Hexadecimal (H)
Description
-
-
-4DA to the PLC. For this
3U