Command Types And Responses - Omron V600 Series Operation Manual

Command Types and Responses

3-4 Command Types and Responses
3-4-1 Read (RD)
Command Format
For 1 to 1 Procedure
Read
R D
Header
ASCII/HEX code specification
A: ASCII code
H: HEX code
R/W Head no.
Start address no. specification range
For 1 to N Procedure For 1 to N Procedure
Read Read
@. Unit No. @. Unit No.
00 to 15
Header
ASCII/HEX code specification
A: ASCII code
H: HEX code
R/W Head no. R/W Head no.
Response Format
For 1 to N Procedure
Read
@. Unit No.
00 to 15
Header
Note Addresses 0000 and 0001 represent the production date registration area, and
consequently data cannot be written to these addresses.
Data is read from the DC. If the DC is not present, an error response (end code:
72 = DC not present) is returned.
A/H 1/2 X X X
R R D D A/H A/H 1/2 1/2 X X
Start address no. specification range Start address no. specification range
For 1 to 1 Procedure
Read
R D
Header
R D 0
Number
∗
of read
X
bytes
Specify the number of bytes to be read in HEX code.
The number of bytes that can be read in one operation is as follows:
ASCII code specification: 256 bytes (256 characters)
HEX code specification: 128 bytes (256 characters)
Note: Refer to the previous page for information on the setting
values.
No. of No. of
X X X X X X
read read
bytes bytes
Specify the number of bytes to be read in HEX code. Specify the number of bytes to be read in HEX code.
The number of bytes that can be read in one operation is as follows: The number of bytes that can be read in one operation is as follows:
ASCII code specification: 256 bytes (256 characters) ASCII code specification: 256 bytes (256 characters)
HEX code specification: 128 bytes (256 characters) HEX code specification: 128 bytes (256 characters)
Note: Refer to the previous page for information on the setting Note: Refer to the previous page for information on the setting
values. values.
0.. 0 X X X
End code (see page 48)
00: Normal completion
.......
0 X X X
End code (see page 48)
00: Normal completion
Section
∗ ∗
FCS FCS
∗
....... X
Read data
∗
FCS
X
Read data
3-4
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