KEYENCE N-400 - Manual (Page 101)

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Chapter 5 Multi-Head Mode Control Procedure
5
5.2.2 Trigger input signal type
When the trigger input is connected to the N-400 in multi-head mode, the trigger
signal is sent to all connected BL series to start the reading operation.
The trigger input signal type can be set for the N-400 as well as for the BL series.
“Level” trigger signal
While the trigger input is ON, the BL series reads bar code data.
“One-shot” trigger signal
After the rising edge of the trigger input is detected, the BL series reads bar code
data for the preset trigger time.
Reading
Trigger input
Communication
output
(When the BL series
successfully read bar code data) (When the BL series failed to
read bar code data)
* Read error
Reading
Trigger input
Preset trigger time Preset trigger time
Communication
output
(When the BL series
successfully read bar code data) (When the BL series failed to
read bar code data)
* Read error