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D-17
4 Programming
4.6 Error Status
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3G-2AD-BD (2-channel analog Input)
A
Common Items
B
FX
3U
-4AD
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3G
-2AD-BD
E
FX
3U
-4DA
F
FX
3U
-4DA-ADP
G
FX
3G
-1DA-BD
H
FX
3U
-3A-ADP
I
FX
3U
-4AD-PT
-ADP
J
FX
3U
-4AD-PTW
-ADP
4.6 Error Status
If an error is detected in the 2AD-BD, the error status data will be stored in the corresponding special data
register.
The following table shows the special data registers that store the error status data:
Check the ON/OFF status of each bit of the error status data register to check the description of the error.
Errors are assigned to the bits as shown in the following table. Create a program to detect errors.
→ For a detailed description of the error status, refer to Section 6.5.
1. Caution regarding use of error status data
If a 2AD-BD hardware error (b6) or 2AD-BD communication data error (b7) is detected, it is necessary to clear
the error status with a program at the next power-on of the PLC.
For this reason, be sure to create the following program:
Special data register
Description
1st board 2nd board
D8268 D8278 Stores the error status data.
Bit Description Bit Description
b0 Channel-1 over-scale detection b5 Averaging time setting error
b1 Channel-2 over-scale detection b6 2AD-BD hardware error
b2 Unused b7 2AD-BD communication data error
b3 Unused b8 to b15 Unused
b4 EEPROM error - -
M8002
Error status of 1st analog board
b6 = OFF (hardware error)
Error status of 1st analog board
b7 = OFF (communication data error)
RST M6
RST M7
Initial pulse
FNC 12
MOV
D8268 K4M0
M8000
Normally ON
D8268K4M0
FNC 12
MOV