Mitsubishi Electric MELSEC-Q Series Programming Manual page 87

• When the block is not specified, specify the step number with which the read data range does not exceed the maximum
step No. in the block.
Item
If the maximum number of steps
is exceeded
When the block has been
specified
• In the activation step batch read instruction, do not specify a nonexistent block/step. An error will not occur if a nonexistent
block/step is specified. However, the read data are undefined. The OPERATION ERROR (error code: 4101) will occur in
the Universal model QCPU and LCPU if a nonexistent step is specified when the block specification is not performed.
• Specify the step as described below.
Item
In the case of SFC program
In the case of sequence program
*1 Note that the following CPU modules cannot use the BRSET instruction. When no block number is specified, the block 0 is set.
 Basic model QCPU
 Universal model QCPU whose serial number (first five digits) is "13101" or earlier
 LCPU
• Note that the following CPU modules cannot use the BRSET instruction. When no block number is
specified, the block 0 is set.
Basic model QCPU
Universal model QCPU whose serial number (first five digits) is "13101" or earlier
LCPU
• In the High-speed Universal model QCPU, the number of steps in the active steps batch readout instruction
increases by one step from that in the QnUDE(H)CPU.
Description
data will be undefined. For example, when the last step of the block to be read is step 10 (S10), data in b11 to 15 will be
undefined.
"0" is stored into the remaining bits. When block 1 is specified, "0" is stored into B11 to 15 if the last step of block 1 is step
10 (S10).
0 0 0
D
Description
Use "K4Sn" when specifying the step in the current block.
Use "BLm\K4Sn" when specifying the step in the SFC program.
Use "BLm\K4Sn" when executing the step activation check instruction.
When the block number is not specified, specify the block number with the BRSET instruction.
4.4 Controlling SFC Programs by Instructions (SFC Control Instructions)
0 0
4 SFC PROGRAM CONFIGURATION
4
*1
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