Sfc Information Devices - Mitsubishi MELSEC-Q Series Programming Manual

4 SFC PROGRAM CONFIGURATION

4.5 SFC Information Devices

This section explains the SFC information devices set in each block. Table 4.2 indicates the SFC
information device types and usable devices.
SFC Information
Device
 Device designed to forcibly start or forcibly end the specified block by
Block START/END
a sequence program or the test operation of the peripheral device.
bit
 Can also be used to confirm the active status of the specified block.
 Device that checks whether or not a step transition occurred in the
Step transition bit
corresponding scan in the specified block.
 Device designed to stop temporarily or restart the corresponding
Block STOP/
RESTART bit block that is active.
 Device used to specify whether all steps will be immediately stopped
Block STOP mode
or the block will be stopped after the transition of the corresponding
bit
step when the block is stopped temporarily.
 Device used to specify whether the operation output of the next step
Continuous
will be executed within the same scan or not when the transition
transition bit
condition is satisfied.
 Device that stores the number of steps currently active in the
"Number of active
steps" register specified block.
POINTS
The following cannot be specified for the SFC information devices.
 Indirect designation (@)
 Digit designation (K)
 Index modification (Z)
 Word device bit designation (.)
4 - 72
Table 4.3 SFC Information Device List
Function Outline
For settings to use SFC information devices, refer to the manual for the programming
tool used.
CPU Module Type
High
Performance
model QCPU,
Usable
Basic
Process
Device model
CPU,
QCPU
Redundant
CPU,
QnACPU
Y, M, L,
F, V, B
D, W, R,
ZR
Universal
model
QCPU,
LCPU
: Usable
4 - 72