Mitsubishi Q Series Programming Guide

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4 SFC PROGRAM CONFIGURATION
MELSEC-Q
(4) If the read data range exceeds the maximum step No. in the block, the data of the next block
No. are read.
When there are no blocks in and after the block to be read, "0" is stored into the remaining bits.
Example:
When "BMOV BL1\S2 D0 K2" is executed in the following case,
• Block 1 : The maximum step No. is 10 (S10) and step 5 (S5) and step 8 (S8) do not
exist
• Block 2 : The maximum step No. is 12 (S12) and step 3 (S3) does not exist
• Block 3 and later: Do not exist
data are stored as shown below.
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
S10S9NoneS7None S4S3S2
D0
S5
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Corresponding
step No.
0/1
0/1
Information of block 2 Information of block 1
S6 S4 None S2 S1 S0S5
b15 b14 b13 b12 b11 b10 b9 b8
b7
b6
b5
b4 b3 b2 b1 b0
S10 S9 S8 S7
D1
0/1 0/1 0/1 0/1 0/1 0/1
Corresponding
step No.
0/1
Information of block 2All turn to 0s since blocks do not exist.
S12 S11
00 0000000
(5) If there is a nonexistent block in the data to be read, the nonexistent block is omitted and the
data of the next existing block are read.
Example:
When "BMOV BL1\S2 D0 K2" is executed in the following case,
• Block 1: The maximum step No. is 10 (S10)
• Block 2: Nonexistent
• Block 3: The maximum step No. is 12 (S12)
• Block 4: The maximum step No. is 15 (S15)
data are stored as shown below.
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
S10S9S6S7S4 S4S3S2
D0
S5
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
Corresponding
step No.
0/1
0/1
Information of block 3 Information of block 1
S6 S4 S3 S2 S1 S0S5
b15 b14 b13 b12 b11 b10 b9 b8
b7
b6
b5
b4 b3 b2 b1 b0
S10 S9 S8 S7
D1
0/1 0/1 0/1 0/1 0/1 0/1
Corresponding
step No.
0/1
Information of block 3
Information of block 4
S12 S11
S6 S4 S3 S2 S1 S0S5S9 S8 S7
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/10/1
(6) 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.
[Operation Error]
• When the step relay (S) range is exceeded ......................Error No. 4101

Mitsubishi Q Series Specifications

General

Brand	Mitsubishi
Model	Q Series
Category	Control Unit
Language	English