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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 -)
Flags
[M]8300 to [M]8303 Not used – – – – – – –––––
[M]8304 Zero
ON when the multiplication and division
calculated result is 0
*1
*1
– –––––
[M]8305 Not used – – – – – – –––––
[M]8306 Carry
ON when the division calculated result
overflows
*1
*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 – – – –––––
[M]8313 to [M]8315 Not used – – – – – – –––––
[M]8316
*3
Unconnected I/O designation error – – –
D8316
D8317
–––––
[M]8317 Not used
– – – – – – –––––
[M]8318
BFM initialization failure
ON when a FROM/TO error has occurred in a
special function unit/block 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.
– – –
*4
D8318
D8319
–––––
[M]8319 to [M]8321 Not used – – – – – – –––––
[M]8322
FX3UC-32MT-LT/FX3UC-32MT-LT-2 model
indicator
1:FX3UC-32MT-LT-2
0:FX3UC-32MT-LT
– – – –
*5
– –––––
[M]8323 CC-Link/LT configuration required – – – –
*5
– –––––
[M]8324 CC-Link/LT configuration completed – – – –
*5
– –––––
[M]8325 to [M]8327 Not used – – – – – – –––––
[M]8328 Instruction non-execution – – –
*4
– –––––
[M]8329 Instruction execution abnormal end – –––––
*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
3S
FX
3G
FX
3GC
FX
3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
1NC
FX
2N
FX
2NC