Omron FH-3 Series Reference Manual page 398

Output of Character String in PLC Link
In PLC Link communication, if you check the [Character output] for output parameters, the character string and
NULL(0x00) are output to the data output area of PLC Link.
Reference: Output Parameters (Character Inspection) (p.394)
1
Output Format
Take the following case as an example. Number of measurement is one. Reading character string is 32.
Command: Read character strings 0123456789...UV, Command, Response, and Data Output area are
as follows.
Reference: Communicating with PLC Link, Command Details for PLC Link, EtherNet/IP, and EtherCAT
in Vision System FH/FZ5 Series User's Manual for Communications Settings (Z342).
Command (PLC to Sensor Controller)
+3
0010
Response (Sensor Controller to PLC)
Top channel
+2
+3
+4
+5
Data Output Area (Sensor Controller to PLC)
When read the 32 character strings (0123456789...UV), the result continues as follows.
ASCII code data + NULL (0x00)
Top channel
+0
+1
.
.
.
+15
+16
Note
If no character string, NULL(0x00) is output.
2
How to get the character string
Perform the Data Output Request (DSA) and Data Output Completion (GATE) as in the case of Data
Output.
All character string is included in one data. Thereby, Data Output Request (DSA) is performed once if
there is one Character Inspection unit.
396
Character Inspection
Top Channel
+2
1010
Top Channel
Data
1010
0010
0000
0000
Name
1st character, 2nd
character
3rd character, 4th character
31st character, 32th
character
NULL
Description
Performs one measurement.
Description
Command Code
Target command code is responded.
Response code
Command execution result.
Description
3031 (ASCII code of the character 0,
ASCII code of the character 1)
3233 (ASCII code of the character 2
ASCII code of the character 3)
5556 (ASCII code of the character
U ASCII code of the character V)
0x00 (NULL)
FH/FZ5 Processing Item Function Reference Manual