The User Program
Auto Read Command
This field specifies
whether the data to
be read from the
Data Carrier is
ASCII characters or
hexadecimal code.
When ASCII charac-
ters are to be read,
this field contains
code A (41 in ASCII
code); when hexa-
decimal code is to
be read, it contains
code H (48 in ASCII
code).
Clear-all Command
Blank (no
specifica-
tion)
Auto Read executes when the Data Carrier approaches the R/W Head. When
the Data Carrier comes within detection range of the R/W Head, Auto Read
reads data from the internal memory of the Data Carrier. Up to 1024 bytes
(512 words) of data can be read at a time. Specify the first address and the
number of bytes in hexadecimal.
15
00
A
R
4
1
5
2
A/H
1
41/48
3
1
*
2
A
0
D
Clear-all clears the Data Carrier's internal memory, regardless of write protec-
tion. The number of command data words are fixed to three. (Refer to 2-3-5
The Data Carrier's Production Date.)
15
00
C
A
4
3
4
1
1
0
0
3
1
*
2
A
0
D
This is OP (operation) code indicating that
the command is Auto Read.
This is OP code represented in ASCII
code.
This code selects a R/W Head and is
always fixed to 1.
ASCII code
Specifies the first address of the Data
Carrier memory to which data is to be
read. Addresses $0000 through $FFFF
can be specified in hexadecimal.
Specifies the number of bytes, which can
range from $0001 through $0400, to be
read in hexadecimal code.
Terminator
ASCII code
This is OP (operation) code indicating
that the command is Clear-all.
This is OP code represented in ASCII code.
This code selects a R/W Head and is
always fixed to 1.
ASCII code
Terminator
ASCII code
Section 2-3
23