Mitsubishi Electric CR800 Series - Page 73

3 Description of functions
3-47
3.5.7.2. Device (Device Access)
The following section describes commands used to perform device reading and writing.
3.5.7.2.1. Data Used in Commands
 Device code
Access destination devices are specified in request data with the following device codes.
For subcommands 0001 and 0000, specify the device code enclosed in parentheses ( ).
Device Category
Device code
Device No. range Remarks
ASCII
code *1
Binary
code
Special relay
(SM)
Bit
SM**
(SM)
0091H
(91H)
SM0 to
SM4095
Decimal
—
Special register
(SD)
Word
SD**
(SD)
00A9H
(A9H)
SD0 to
SD4095
Decimal
—
Input (X)
Bit
X***
(X*)
009CH
(9CH)
R type:
X0 to XFFF
D type:
X0 to X1FFF
Hexadecimal
—
Output (Y)
Y***
(Y*)
009DH
(9DH)
R type:
Y0 to YFFF
D type:
Y0 to Y1FFF
Hexadecimal
—
Internal relay
(M)
M***
(M*)
0090H
(90H)
M0 to M18431
Decimal
Cannot be specified with D
type.
Data register (D)
Word
D***
(D*)
00A8H
(A8H)
D0 to D5119
Decimal
—
CPU buffer
memory access
device
See section 3.5.7.2.6 of this manual.
Cannot be specified with D
type.
*1: When performing data communication in ASCII code, specify device codes with 4 digits for subcommands 003 and
002. For device codes with 3 digits or less, add an asterisk (*) (ASCII code: 2AH) or a space (ASCII code: 20H) after
the device code.
Specify device codes with 2 digits for subcommands 001 and 000. For device codes with 1 digit, add an asterisk
(*) (ASCII code: 2AH) or a space (ASCII code: 20H) after the device code.