Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
I-21
4 Programming
4.6 Error Status
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4AD-PT-ADP (4-channel Platinum Resistance Thermometer Data Input)
A
Comm
on I
te
te
ms
B
FX
3U
-4AD
FX
3UC
-4
A
D
C
FX
3U
-4A
D
D
-A
D
P
D
FX
3G
-2A
D
D
-BD
E
FX
3U
-4DA
F
FX
3U
-4D
A
A
-AD
P
P
G
FX
3G
-1D
A
A
-BD
H
FX
3U
-3
A-
ADP
I
FX
3U
-4
A
D
-P
T
-
A
D
P
J
FX
3U
-4A
D
D
-P
TW
-
A
A
D
P
4.6
Error Status
If an error is detected in the PT-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
register.
The following table shows the special data registers that store the error status data:
• FX
3U
, FX
3UC
Series PLC
• FX
3G
Series PLC
Check the ON/OFF status of each bit of the error status data register to determine the error. Errors are
assigned to the bits as shown in the following table. Create a program to detect errors.
assigned to the bits as shown in the following table. Create a program to detect errors.
1. Caution regarding use of error status data
If a PT-ADP hardware error (b6) or PT-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
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
3G
, FX
3U
, FX
3UC
Series PLC
*1.
"1st" for the FX
3G
PLC.
Special data register
Description
1st
2nd
3rd
4th
D8268
D8278
D8288
D8298
Stores the error status data.
Special data register
Description
1st
2nd
D8288
D8298
Stores the error status data.
Bit
Description
Bit
Description
b0
The temperature measurement data
of channel 1 is outside the specified
range, or disconnection is detected.
of channel 1 is outside the specified
range, or disconnection is detected.
b5
Averaging time setting error
b1
The temperature measurement data
of channel 2 is outside the specified
range, or disconnection is detected.
of channel 2 is outside the specified
range, or disconnection is detected.
b6
PT-ADP hardware error
b2
The temperature measurement data
of channel 3 is outside the specified
range, or disconnection is detected.
of channel 3 is outside the specified
range, or disconnection is detected.
b7
PT-ADP communication data error
b3
The temperature measurement data
of channel 4 is outside the specified
range, or disconnection is detected.
of channel 4 is outside the specified
range, or disconnection is detected.
b8 to b15
Unused
b4
EEPROM error
-
-
Error status of 3rd
*1
analog special adapter
b6 = OFF (hardware error)
Error status of 3rd
*1
analog special adapter
b7 = OFF (communication data error)
M8002
Normally
ON
ON
Initial pulse
RST
M6
RST
M7
M8000
MOV
D8288
K4M0
MOV
K4M0
D8288