Omron 2D CODE READER, User Manual

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V400-F050/250/350
User’s Manual
Sec
tion 5
RS-
232
C Communica
tion
Section 5
Communicating with PC and Programmable Controller
„ Description of Format
Commands must be input in ASCII code. They can be input in either upper-case or
lower-case.
In the explanation of the format for each command, only the items “command (2)” to “parameter (4)”
are given.
• In the explanation of the format for each command, only “content of reply” when a command is
executed correctly is given.
• The content of reply when a command is not executed will be .
No. Item
Number of
characters
Settings
1 Header (Prefix) 1 Enter the symbol that indicates the beginning of the command format.
This item is not available if [None] is selected for [Prefix] setting mode.
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2 Command 2 These characters indicate the operation content.
3 Space 1 A space must be inserted between the command (2) and parameter (4).
4 Parameter Not fixed This parameter needs to be specified depending on the command (3).
If needed, enter a numerical value.
5 FCS
(Frame check
sequence) 2 Specify the FCS to be used.
This item is not available if [OFF] is selected for [FCS] setting mode.
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6 Footer(Suffix) 1 to 2 Enter the symbol that indicates the end of the command format.
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Input
Header Command Parameter FCS Footer
1 2 4 5 6 3
No. Item
Number of
characters
Settings
1 Number of read
data digits (Digit
Data) 2 or 4 Returns the number of reading data digits.
The number of characters must be set in [Digit Data] of the setting mode. This
item is not available if [OFF] is set.
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2 Code quality
(Checker Data) 12 Returns the code quality of the read data.
This item is not available if [OFF] is selected for [Checker Data] setting mode.
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3 Read data Depends on
the read data. Returns the read data.
Output Header Content of reply FCS Footer
Number of read data digits
1 2 3
Read data Code quality
E R