KEYENCE BL-600 Series User Manual
Page 148
Chapter 8 PLC Link
138
8
Operating procedure
1. Set the +05 address to “0”.
2. To trigger the BL-600 to start reading (to turn the trigger ON), set the +04
address to “1”.
3. When the BL-600 recognizes the change in the +04 address, it returns a “1” to
the +05 address. The BL-600 then starts reading the data.
If a “1” is not returned, the BL-600 has not recognized the +04 address yet. Do
not immediately reset the +04 address to “0”.
After confirming that a “1” has been returned to the +05 address, reset the
address to “0”.
4. After reading the bar code data, the BL-600 writes new data in A+05 to A+69.
5. To turn the trigger OFF, reset the +04 address to “0”.
6. When the BL-600 recognizes the change in the +04 address, it returns a “1” to
the +05 address. The trigger then turns OFF.
If a “1” is not returned, the BL-600 has not recognized the +04 address yet. Do
not immediately set the +04 address to “1”.
After confirming that the +05 address has been set to “1”, reset the address to
“0”.
7. If a reading error occurs, a reading error code is written in A+05 to A+69.
Note: When quickly turning the trigger ON/OFF at the +04 address, the BL-600
may overlook the change in the +04 address and fail to turn the trigger ON/OFF. If
this occurs, change the program so that the +05 address can confirm that the BL-
600 recognized the +04 address.
If your system does not have the problem described above, monitoring by the +05
address is not required.
■ One-shot signal trigger
•
The +04 address “Reading trigger area” triggers the BL-600 to start reading
(turn ON the laser).
•
The +06 address “One-shot signal trigger time setup area” sets the scan time in
one-shot signal mode.
➮ See page 86.
When “0” is set for this address, the value set by the BL-600 setup software is
used as the scan time.
* When the BL-600 recognizes “1”, “0” is set to the +04 address.
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