System Clock; Special Relay Used For System Clock; Special Register Used For System Clock - Mitsubishi Electric FX5 User Manual

7.3

System clock

There are two types of system clocks, one is to execute ON/OFF by the system and the other is to execute ON/OFF in the
intervals specified by the user.

Special relay used for system clock

Special relays used for system clock are as follows.
Special relay
SM400, SM8000
SM401, SM8001
SM402, SM8002
SM403, SM8003
SM409, SM8011
SM410, SM8012
SM411
SM412, SM8013
SM413
SM414
SM415
SM8014
SM420, SM8330
SM421, SM8331
SM422, SM8332
SM423, SM8333
SM424, SM8334

Special register used for system clock

Special registers used for system clock are as follows.
Special register
SD412
SD414
SD415
SD420
SD8330
SD8331
SD8332
SD8333
SD8334
SM420 to SM424, SM8330 to SM8334, and SD8330 to SD8334 are used by the DUTY instruction.
For the DUTY instruction, refer to the following.
MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks)
7 CLOCK FUNCTION
60
7.3 System clock
Name
Always ON
Always OFF
After RUN, ON for one scan only
After RUN, OFF for one scan only
0.01 second clock
0.1 second clock
0.2 second clock
1 second clock
2 second clock
2n second clock
2n ms clock
1 min clock
Timing clock output 1
Timing clock output 2
Timing clock output 3
Timing clock output 4
Timing clock output 5
Name
One second counter
2n second clock setting
2n ms clock setting
Scan counter
Counted number of scans for timing clock output 1
Counted number of scans for timing clock output 2
Counted number of scans for timing clock output 3
Counted number of scans for timing clock output 4
Counted number of scans for timing clock output 5