Omron fh-3 series - Page 398

Character Inspection
396
FH/FZ5 Processing Item Function Reference Manual
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 L
ink, EtherNet/IP, and EtherCAT
in Vision System FH/FZ5 Series User’s Manual for Communications Settings (Z342).
Command (PLC to Sensor Controller)
Response (Sensor Controller to PLC)
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)
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 Ou
tp
ut Request (DSA) is performed once if
there is one Character Inspection unit.
Top Channel
Description
+3 +2
0010 1010 Performs one measurement.
Top Channel
Description
Top channel Data
+2 1010
Command Code
Target command code is responded.
+3 0010
+4 0000
Response code
Command execution result.
+5 0000
Top channel Name Description
+0
1st character, 2nd
ch
aracter
30
31 (ASCII code of the character 0,
ASCII code of the character 1)
+1 3rd character, 4th character
3233 (ASCII code of the character 2
ASCII code of the character 3)
.
.
.
+15
31st character, 32th
ch
aracter
55
56 (ASCII code of the character
U ASCII code of the character V)
+16 NULL 0x00 (NULL)
If no character string, NULL(0x00) is output.
Note