Mitsubishi Electric MELSEC-Q Structured Programming Manual page 182

FXCPU Structured Programming Manual
[Device & Common]
Number and name
Step ladder and annunciator
*1
[D]8040
ON state relay number 1
*1
[D]8041
ON state relay number 2
*1
[D]8042
ON state relay number 3
D8040 stores the smallest number of active state relays
*1
[D]8043
among S0 to S899 and S1000 to S4095
ON state relay number 4
stores the second-smallest number of active state relays.
*1
[D]8044
In this way, D8040 to D8047 sequentially store up to 8 active
ON state relay number 5
state relays.
*1
[D]8045
ON state relay number 6
*1
[D]8046
ON state relay number 7
*1
[D]8047
ON state relay number 8
[D]8048 Unavailable
*1
[D]8049
Stores the smallest number of active annunciator relays
Smallest active state
among S900 to S999 when M8049 is ON.
relay number
[D]8050 to [D]8059 Unavailable
*1. Activated when the END instruction is executed.
*2. S1000 to S4095 are available only in the FX
Error detection (Refer to Chapter 5 for details.)
Unconnected head I/O number in I/O configuration error
When programmed input/output numbers are unconnected,
D8060 stores the head unconnected device number.
Example: When X020 is unconnected
[D]8060
[D]8061 Error code for PLC hardware code
Error code for PLC/PP communication error
[D]8062
Error code for serial communication error 0 [ch0]
*4
Error code for serial communication error 1 [ch1]
[D]8063
[D]8064 Error code for parameter error
[D]8065 Error code for syntax error
[D]8066 Error code for circuit error
*5
Error code for operation error
[D]8067
D 8068 Latched step number where operation error has occurred
*5
Step number where M8065 to M8067 error has occurred
[D]8069
*3. 10 to 337 in FX
10 to 177 in FX
*4. Cleared when the PLC power supply from OFF to ON.
*5. Cleared when the PLC mode switches from STOP to RUN.
*6. D8313 and D8312 store the step number when there are 32K steps or more.
*7. D8315 and D8314 store the step number when there are 32K steps or more.
180
Content of register
1 0 2 0 Value converted into BCD
Device number
1:Input X 0:Output Y
/FX PLCs
3U 3UC
/FX PLCs
3G 3GC
4 Operations of Special Devices (M8000 and later, D8000 and later)
4.1 Special Device List (M8000 and later, D8000 and later)
FX FX
3U
*2
, and D8041
-
-
, FX , FX
3G 3GC 3U
*3
*4
-
*6
*7
Applicable model
FX FX FX
3UC 3G 3GC 3S
- - - -
-
- - - -
, or FX PLCs.
3UC
-
- -
*6
*7
Corresponding
special device
M8047
-
M8049
-
M8060
M8061
M8062
M8062
M8063
M8064
M8065
M8066
M8067
M8068
M8065 to M8067