KEYENCE BL-700 Series - Manual (Page 125)

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Chapter 6 PCL Link
6
Detailed description of device assignment
Specify the head address of the areas where the read data is stored. (Specify the
head address as binary data.)
When using the BL-700 in multi-label read mode 3, +00 to +03 are used as the
data memory head address for Codes 1 to 4, respectively. However, data is not
stored in the area for which the code type is not set.
These areas are used to send the trigger input signal to the BL-700 to start reading
bar code data.
When connecting a photoelectric sensor for trigger input in the BL-700 series, do
not use these areas.
These areas are not assigned if you set “Reading trigger input area” to “Disable” in
the BL-700 setup software. (In this case, these areas can be used for other pur-
poses.)
The method for using the areas varies depending on the BL-700 scan method,
“Level signal trigger” or “One-shot signal trigger”. Each case is described below.
■ When “Level signal trigger” is set
“Reading trigger area” at the +04 address is used to trigger the BL-700 to start
reading the data (turn on the laser beams).
“Trigger input response area” at the +05 address is used to check whether the data
at +04 was sent correctly to the BL-700. When the BL-700 recognizes the +04
address (which means that the process has been completed), it returns a “1” to the
+05 address.
+00 to +03
Data memory head address
+04 to +06
Reading trigger area
Address Description Data
+04 Reading trigger area 1 ... Trigger ON
0 ... Trigger OFF
+05 Trigger input response area 1 ... Process completed
0 ... Process not completed
+06 Reserved Reserved