Mitsubishi Electric MELSEC FX3U - Page 896

894
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
37 Operation of Special Devices (M8000 -, D8000 -)
37.1 Special Device List (M8000 -, D8000 -)
Error Detection (Refer to Chapter 38 for details.)
[D]8060
If the unit or block corresponding to a programmed
I/O number is not actually loaded, M8060 is set to
ON and the first device number of the erroneous
block is written to D8060.
3 3 3 M8060 – – 3 – 3
[D]8061 Error code for PLC hardware error
3 3 3 M8061 333 3 3
[D]8062
Error code for PLC/PP communication error
3 3 3 M8062 – – 3 – 3
Error code for serial communication error 0 [ch0]
3 – – M8062 – – – – –
[D]8063
*4
Error code for serial communication error 1 [ch1] 3 3 3 M8063 3333 3
[D]8064 Error code for parameter error
3 3 3 M8064 333 3 3
[D]8065 Error code for syntax error
3 3 3 M8065 333 3 3
[D]8066 Error code for ladder error
3 3 3 M8066 333 3 3
[D]8067
*5
Error code for operation error 3 3 3 M8067 3333 3
D 8068
*5
Operation error step number latched 3
3
*6
3
*6
M8068 3333 3
[D]8069
*5
Error step number of M8065 to M8067 3
3
*7
3
*7
M8065 to
M8067
3333 3
*3. 10 to 337 in FX3U, FX3UC, FX2N and FX2NC PLCs, and 10 to 177 in FX3G PLCs
*4. The operation varies according to PLC:
- Cleared in an FX
1S, FX1N, FX2N, FX1NC, or FX2NC when PLC switches from STOP to RUN.
- Cleared in an FX
3G, FX3U, or FX3UC PLC when the power is turn off and on.
*5. Cleared when PLC switches from STOP to RUN.
*6. In case of 32K steps or more, step number is stored in [D8313, D8312].
*7. In case of 32K steps or more, step number is stored in [D8315, D8314].
Parallel Link (Refer to Data Communication Edition for details.)
[D]8070 Parallel link error time-out check time: 500 ms
3 3 3 – 3333 3
[D]8071
Not used
– – – – –––– –
[D]8072
– – – – –––– –
[D]8073
– – – – –––– –
Number and name Content of register
Applicable model
FX 3G FX 3U FX 3UC
Correspond-
ing special
device
FX 1S FX 1N FX 2N FX 1NC FX 2NC
1 0 2 0
1: Input X 0: Output Y
Device number
Example: If X020 is unconnected.
BCD converted value
*3