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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 -)
Flags
[M]8300 to [M]8303 Not used
– – – – –––––
[M]8304 Zero
ON when the multiplication and division calculated result
is 0
–
3
*1
3
*1
– –––– –
[M]8305 Not used
– – – – –––––
[M]8306 Carry ON when the division calculated result overflows
–
3
*1
3
*1
– –––– –
[M]8307 to [M]8311 Not used
– – – – –––––
Unconnected I/O Designation Error (Refer to Chapter 38 for details.) and flag
[M]8312
*2
Real time clock data lost error 3 – – – –––– –
[M]8313 to [M]8315 Not used
– – – – –––––
[M]8316
*3
Unconnected I/O designation error – 3 3
D8316
D8317
–––– –
[M]8317 Not used
– – – – –––––
[M]8318
BFM initialization failure
ON when a FROM/TO error has occurred in a special
function block/unit as specified in the BFM initialization
function at changing PLC from STOP to RUN.
When M8318 turns ON, the unit number in which the
error has occurred is stored in D8318, and the BFM
number is stored in D8319.
– 3
3
*4
D8318
D8319
–––– –
[M]8319 to [M]8321 Not used
– – – – –––––
[M]8322
FX
3UC-32MT-LT/FX3UC-32MT-LT-2 model
indicator
1:FX
3UC-32MT-LT-2
0:FX
3UC-32MT-LT
– –
3
*5
– –––– –
[M]8323 CC-Link/LT configuration required
– –
3
*5
– –––– –
[M]8324 CC-Link/LT configuration completed
– –
3
*5
– –––– –
[M]8325 to [M]8327 Not used
– – – – –––––
[M]8328 Instruction non-execution
– 3
3
*4
– –––– –
[M]8329 Instruction execution abnormal end
3 3 3 – –––– –
*1. Available in Ver. 2.30 or later.
*2. M8312 is EEPROM backed up against power failure, and is automatically cleared when it is cleared or when
the clock data is set again. For details on backup against power failure, refer to Section 2.6.
*3. If the I/O device numbers are unavailable, M8316 turns ON when its directly designated to device numbers
including LD, AND, OR, and OUT instructions or indirectly designated by index.
*4. Available in Ver. 2.20 or later.
*5. Only the FX
3UC-32MT-LT-2 is applicable.
Number and name Operation and function
Applicable model
FX
3G FX3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
2N
FX
1NC
FX
2NC