SATO CL4NX Programming Reference Manual page 362

Parameters for Block Lock (omissible)
lck: Static lock
dlk:
Dynamic lock
Note that once 1 (lock) has been specified in a location, it cannot be returned to 0 (unlock).
The specified block control can be applied to 12 blocks of user memory.
Please set a fixed, 4-digit hexadecimal.
See bit image as below.
Bit position 7 6
L L
st
1 byte
7 6
L L
nd
2 byte
15 14
CC: Block that indicate inlet specification
The lock types are locking for individual blocks (L) and block locking for
segments of 6 blocks (BL). Numbers indicate the numbers of the locked
blocks.
Specifying 1 in location L prevents writing to the block with the specified
number (changes it to read-only).
Specifying 1 in location BL locks the current restrictions on the blocks in the
applicable range.
The target range of blocks will be fixed with the current restrictions when you
specify 1 in place of BL. The block without L-lock cannot be made read-only,
so it will constantly be read-write.
If the capacity of user memory exceeds 12 blocks, control can be applied to
specified blocks from the 13th block onwards.
Please set a fixed, 6-digit hexadecimal.
Please set a 4-digit hexadecimal for NTAG203 and MIFARE Ultralight-C
Set an 8-digit hexadecimal for my-d move NFC.
There are two types of bit images, locking multiple blocks (L) and
block-locking multiple blocks (BL). It depends on the product as to which
block will be allocated for each bit (See the following bit image chart for
specifying dynamic block lock)
The specified block will be write protected when you specify 1 in place of L
(will be made read-only).
The target range of blocks will be fixed with the current restrictions when you
specify 1 in place of BL. The block without L-lock cannot be made read-only,
so it will constantly be read-write.
354
5 4 3 2
L L L BL
5 4 CC 15-10
L L L L
13 12 11 10
1 0
BL BL
9-4 CC
L L
9 8