Omron SYSMAC C200H-IDS01-V1, Operation Manual

Page: 36 / 114

21
The User Program
Section 2-3
Read Command The Read command 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
R
5 2
A/H
41/48
2
*
A
00
D
4 4
1
3 1
0 D
This is OP (operation) code indicating
that the command is Read.
This is OP code represented in ASCII
code.
This code selects a Read/Write 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.
Terminator
ASCII code
This field specifies
whether the data to
be read from the
Data Carrier is ASCII
characters or hexa-
decimal code. When
ASCII characters are
to be read, this field
contains code A (41
in ASCII code); when
hexadecimal code is
to be read, it contains
code H (48 in ASCII
code).
Specifies the number of bytes, which
can range from $0001 through $0400 (1
through 1024 in decimal), to be read in
hexadecimal code.