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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
37 Operation of Special Devices (M8000 -, D8000 -)
37.1 Special Device List (M8000 -, D8000 -)
31
FNC277-FNC279
Data
Transfer 3
32
FNC280-FNC289
High-Speed
Processing 2
33
FNC290-FNC299
Extension File
Register Control
34
FNC300-FNC305
FX
3U
-CF-ADP
35
SFC•STL
Programming
36
Interrupt
Function
37
Special Device
38
Error Code
A
Version Up
Information
B
Execution Times
Stepladder and Annunciator
[D]8040
*1
ON state number 1
The smallest number out of active state
ranging from S0 to S899 and S1000 to
S4095
*2
is stored in D8040 and the second-
smallest state number is stored in D8041.
Active state numbers are then sequentially
stored in registers up to D8047 (Max. 8
points).
M8047
[D]8041
*1
ON state number 2
[D]8042
*1
ON state number 3
[D]8043
*1
ON state number 4
[D]8044
*1
ON state number 5
[D]8045
*1
ON state number 6
[D]8046
*1
ON state number 7
[D]8047
*1
ON state number 8
[D]8048 Not used – – – – – – –––––
[D]8049
*1
On state minimum
number
When M8049 is ON, the smallest number out
of active annunciator relay ranging from S900
to S999 is stored in D8049.
– M8049 – – –
[D]8050 to [D]8059 Not used – – – – – – –––––
*1. Executed at END instruction.
*2. S1000 to S4095 are available only in FX
3G/FX3GC/FX3U/FX3UC PLCs.
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.
– M8060 – – –
[D]8061 Error code for PLC hardware error
M8061 – – –
[D]8062
Error code for PLC/PP communication error M8062
Error code for serial communication error 0 [ch0]
*4
– – – M8062 – – – – –
[D]8063
*5
Error code for serial communication error 1 [ch1]
M8063
[D]8064 Error code for parameter error M8064
[D]8065 Error code for syntax error M8065
[D]8066 Error code for ladder error M8066
[D]8067
*6
Error code for operation error M8067
D 8068 Operation error step number latched
*7
*7
M8068
[D]8069
*6
Error step number of M8065 to M8067
*8
*8
M8065 to
M8067
*3. 10 to 337 in FX3U/FX3UC/FX2N/FX2NC PLCs, and 10 to 177 in FX3G/FX3GC PLCs.
*4. Cleared when PLC power supply is turned from OFF to ON.
*5. The operation varies according to PLC:
- Cleared in an FX
1S/FX1N/FX1NC/FX2N/FX2NC when PLC switches from STOP to RUN.
- Cleared in an FX
3S/FX3G/FX3GC/FX3U/FX3UC PLCs when PLC power supply from OFF to ON.
*6. Cleared when PLC switches from STOP to RUN.
*7. In case of 32K steps or more, step number is stored in [D8313, D8312].
*8. In case of 32K steps or more, step number is stored in [D8315, D8314].
Number and
name
Content of register
Applicable model
FX
3S
FX
3G
FX
3GC
FX
3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
1NC
FX
2N
FX
2NC
1 0 2 0
1: Input X 0: Output Y
Device number
a
mple: If X020 is unconnected.
BCD converted value
*3
1 0 2 0
1: Input X 0: Output Y
Device number
Example: If X020 is unconnected.
BCD converted value
*3