Mitsubishi MELSEC-F FX3U-4AD-TC-ADP User Manual

C-18
4 Programming
4.6 Error Status
FX 3U /FX 3UC Series PLC User's Manual - Analog Control Edition
FX3U-4AD-ADP (4-channel analog Input)
4.6 Error Status
If an error is detected on 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:
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 error statuses, refer to Section 6.5.
1. Caution regarding use of error status data
If 4AD-ADP hardware error (b6) or 4AD-ADP communication data error (b7) is detected, it is necessary to
clear the error status in a program at the next power-on of the PLC.
For this reason, be sure to create the following program:
2. Example of program
Special data register
Description
1st 2nd 3rd 4th
D8268 D8278 D8288 D8298 Stores the error status data.
Bit Description Bit Description
b0 Detection of over-scale in channel 1 b5 Number of averaging time setting error
b1 Detection of over-scale in channel 2 b6 4AD-ADP hardware error
b2 Detection of over-scale in channel 3 b7 4AD-ADP communication data error
b3 Detection of over-scale in channel 4 b8 to b15 Unused
b4 EEPROM error - -
M8002
Error status of 1st analog special adapter
b6 = OFF (hardware error)
Error status of 1st analog status register
b7 = OFF (communication data error)
RST D8268.6
RST D8268.7
Initial pulse
Y000
D8268.0
Y001
D8268.1
Y002
D8268.2
Y003
D8268.3
Y004
D8268.4
Y005
D8268.5
Y006
D8268.6
Y007
D8268.7
Detects over-scale in channel 1 of
the 1st adapter.
Detects over-scale in channel 2 of
the 1st adapter.
Detects over-scale in channel 3 of
the 1st adapter.
Detects over-scale in channel 4 of
the 1st adapter.
EEPROM error on 1st adapter
Number of averaging time setting
error on 1st adapter
Hardware error on 1st 4AD-ADP
Communication data error on 1st
4AD-ADP

Mitsubishi MELSEC-F FX3U-4AD-TC-ADP Specifications

General

Brand	Mitsubishi
Model	MELSEC-F FX3U-4AD-TC-ADP
Category	Controller
Language	English