Error Status - Mitsubishi FX3U-4AD User Manual

FX /FX /FX PLC User's Manual - Analog Control Edition
3G 3U 3UC
FX -4AD-ADP (4-channel analog Input)
3U
4.6

Error Status

If an error is detected in the 4AD-ADP, 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:
• FX , FX Series PLC
3U 3UC
1st
D8268
• FX Series PLC
3G
Special data register
1st
D8288
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.
Bit
b0 Channel-1 over-scale detection
b1 Channel-2 over-scale detection
b2 Channel-3 over-scale detection
b3 Channel-4 over-scale detection
b4 EEPROM error
1. Caution regarding use of error status data
If a 4AD-ADP hardware error (b6) or 4AD-ADP 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:
• For FX , FX
3G 3U
M8000
Normally ON
M8002
Initial pulse
*1. "1st" for the FX
• For FX , FX
3U 3UC
M8002
Initial pulse
Special data register
2nd 3rd
D8278 D8288
2nd
D8298 Stores the error status data.
→ For a detailed description of the error status, refer to Section 6.5.
Description
, FX Series PLC
3UC
D8288
MOV
RST
RST
MOV K4M0
PLC.
3G
Series PLC
RST
RST
4th
D8298 Stores the error status data.
Description
Bit
b5 Averaging time setting error
b6 4AD-ADP hardware error
b7 4AD-ADP communication data error
b8 to b15 Unused
-
K4M0
Error status of 3rd analog special adapter
M6
b6 = OFF (hardware error)
Error status of 3rd analog status register
M7
b7 = OFF (communication data error)
D8288
Error status of 1st analog special adapter
D8268.6
b6 = OFF (hardware error)
Error status of 1st analog status register
D8268.7
b7 = OFF (communication data error)
4 Programming
4.6 Error Status
Description
Description
-
*1
*1
C-21
A
B
C
D
E
F
G
H
I
J