4 DEVICES
4.10 SFC Devices
75
4
4.10 SFC Devices
These are the devices used by the SFC function.
SFC block device (BL)
This device is used when specifying SFC program blocks. This device is also used when specifying step No. through such
methods as verifying (monitor, current value changes) SFC programs with SFC control instructions or the engineering tool.
(MELSEC iQ-F FX5 Programming Manual (Program Design))
To start the SFC block device for the SFC program while ON/OFF information of the SFC block device (BL)
are maintained (continuation start), an option battery is required.
SFC transition device (TR)
This device is used when specifying SFC program transition conditions. This device can only be used for device comments for
transition conditions. (MELSEC iQ-F FX5 Programming Manual (Program Design))
4.11 Indirect Specification
Specify the device using the indirect address of device. Store the indirect address of device to be specified into the device for
indirect specification, and write as "@ + Device for indirect specification".
The indirect specification can be used in the device/label memory.
Indirect address of device
To specify, use the 32-bit data, and to hold the value, use the device of two words. The indirect address of the device can be
obtained with the ADRSET instruction. The ADRSET instruction specifies the indirect address of the device using instructions
that handle 32-bit data. For the ADRSET instruction, refer to the following.
MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks)
Devices that can allow indirect specification
This section lists devices that can allow indirect specification.
*1 Devices that cannot be used as operands of instructions cannot be used even when they are indirectly specified.
(1) The indirect address of D0 is read
into D100, D101.
(2) The indirect address is used to
indirectly specify D0.
Type Device
*1
Devices that can allow indirect specification where @ is added D, W, SW, SD, U\G, R
Device that can acquire the indirect address through the ADRSET instruction D, W, SW, SD, R
SM402
ADRSET D0 D100
M0
MOV
@D100
D1
1000H
D0
D100
D101
1000H
(1)
(2)
Device for the
indirect specification
(D100, D101)
Indirect
specification
Indirect
address Device memory
To Next Page
Loading...
