Mitsubishi Electronics FX3G User Manual
122
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
4 Devices in Detail
4.8 High-Speed Counter [C] (FX3U/FX3UC PLC)
4.8.5
Related devices
1. Devices used to switch the counting direction of 1-phase 1-count input counters
2. Devices used to check the counting direction of 1-phase 2-count input counters and
2-phase 2-count input counters
3. Devices used to switch the high-speed counter function
4. Operation status of hardware counters and software counters
*1.
Cleared when the PLC mode switches from STOP to RUN.
Type
Counter No.
Specifying device
Up-counting
Down-counting
1-phase
1-counting input
C235
M8235
OFF
ON
C236
M8236
C237
M8237
C238
M8238
C239
M8239
C240
M8240
C241
M8241
C242
M8242
C243
M8243
C244
M8244
C245
M8245
Type
Counter No.
Monitoring device
OFF
ON
1-phase
2-counting input
C246
M8246
Up-counting
Down-counting
C247
M8247
C248
M8248
C249
M8249
C250
M8250
2-phase
2-counting input
C251
M8251
C252
M8252
C253
M8253
C254
M8254
C255
M8255
Device No.
Name
Description
M8388
Contact for changing function of
high-speed counter
high-speed counter
Changes the function of high-speed counter.
M8389
Function switching
device
device
Switches the logic of the external reset input.
(For details, refer to Subsection 4.8.6.)
(For details, refer to Subsection 4.8.6.)
M8390
Switches the function of C244. (For details, refer to Subsection 4.8.7.)
M8391
Switches the function of C245. (For details, refer to Subsection 4.8.7.)
M8392
Switches the function of C248 and C253.
(For details, refer to Subsection 4.8.7.)
(For details, refer to Subsection 4.8.7.)
M8198
Switches the edge count (between 1 and 4) of C251, C252 and C254.
(For details, refer to Subsection 4.8.8.)
(For details, refer to Subsection 4.8.8.)
M8199
Switches the edge count (between 1 and 4) of C253, C255 and C253 (OP).
(For details, refer to Subsection 4.8.8.)
(For details, refer to Subsection 4.8.8.)
Device No.
Name
Description
ON
OFF
M8380
*1
Operation
status flag
status flag
Operation status of C235, C241, C244, C246, C247, C249, C251, C252 or C254
Software
counter
counter
Hardware
M8381
*1
Operation status of C236
M8382
*1
Operation status of C237, C242 or C245
M8383
*1
Operation status of C238, C248, C248(OP), C250, C253 or C255
M8384
*1
Operation status of C239 or C243
M8385
*1
Operation status of C240
M8386
*1
Operation status of C244(OP)
M8387
*1
Operation status of C245(OP)