8 silent mode, Silent mode, Image saving timing – KEYENCE SR-750 Series User Manual
Page 18: E sr-750 um
18
E SR-750 UM
(2) When the reading mode is the multi 2 read mode
In the multi 2 read mode, if reading judgments (Success or Failed) differ among
parameter banks, the judged images of parameter banks that were judged as
reading error are saved.
For the latest images, the image obtained last is saved.
(3) When the reading mode is the burst read mode
If a read error occurs in the burst read mode, the judged images for the save
target burst numbers are only saved.
For the latest images, all burst scanned images are saved.
Save images of the specified number after trigger input
ON
When the read result is judged, the SR-750 Series saves images of the specified
number after the reading operation began.
Image saving timing
The timing when images to be saved are determined is the same as the timing
when Read OK/Verification NG/Read error is judged.
The number of images to be saved can be specified by using AutoID Network
Navigator or setting commands for both the latest images and judged images.
(Max. 10 for each)
NOTICE
If the trigger input turns off before the decoding process for
scanned images are not complete, the judged images as save
targets are saved with the type of image "X" (Decoding process
not performed).
NOTICE
• When the reading mode is the multi 1 read mode, image saving
is impossible with this operation.
• When the reading result can be judged before reaching the
specified number, the images until that point are saved.
• When the reading mode is the burst read mode, up to 8 images
are saved. In the burst read mode, the SR-750 Series saves
images of the specified number (burst scan count) for both the
latest images and judged images.
Trigger input
Latest image
Reading
Success/Failed
Parameter bank
Bank
1
Images to be saved
Judged image
Bank
2
Bank
3
Bank
1
Bank
2
Failed
Failed
Failed
Success
Failed
Bank
2
Bank
3
Trigger input
Latest image
Reading
Success/Failed
Parameter bank
Scanning
1
Images to be saved
Judged image
Bank
1
Scanning 1
Failed
Save
target
Scanning
5
Scanning
2
Scanning
3
Scanning
4
Bank
1
Bank
1
Bank
1
Bank
1
Scanning 5
Failed
Scanning 4
Failed
Scanning 3
Failed
Scanning 2
Failed
Save
target
Save
target
Trigger input
Reading
Success/Failed
Judged image
Images to be saved
Scanning 1
Failed
Save
target
Scanning 5
Failed
Scanning 4
Failed
Scanning 3
Failed
Scanning 2
Failed
Save
target
Save
target
The type of image is "X"
because decoding process
is not performed.
·····
·····
·····
Trigger input
Latest image
Judged image
Parameter bank
Latest
1
Bank
1
Latest
n-1
Latest
2
Latest
3
Latest
4
Bank
3
Bank
1
Bank
3
Bank
2
The SR-750 Series saves images of the specified number (n) after the trigger input
turns ON.
Latest
n
Bank
1
Judged
1
Judged
n-1
Judged
4
Judged
3
Judged
2
Judged
n
Save images of the specified number before trigger
input OFF
When the read result is judged or the trigger input turns OFF, the SR-750 Series
saves images of the specified number before then.
Image saving timing
The timing when images to be saved are determined is the same as the timing
when Read OK/Verification NG is determined, or the trigger input turns OFF and
Read error is determined.
The number of images to be saved can be specified by using AutoID Network
Navigator or setting commands for both the latest images and judged images.
(Max. 10 for each)
• Image number is counted in the obtained order as 1, 2, 3···.
3-8
Silent Mode
This section describes the silent mode of the SR-750 Series.
Silent mode
A typical code reader outputs data of the result when the code is read or the read
error code when it is not read.
The SR-750 Series can be configured to restrain data communication and not to
output the result data to the host computer.
This function is called "Silent mode".
For example, if the application only uses the OK, NG or Read Error terminal
outputs, this information can be suppressed.
By configuring the SR-750 Series not to send all data, it eliminates the time
required for data transmission to/from the host computer. As a result, overall
reading time can be reduced.
Timing diagram (when OK/NG/ERROR data is restrained)
Only data is not sent as shown above, but the OUT output terminal performs
normal operation.
* Even with the silent mode set, images can be saved with the condition set using
the image save function.
Refer to
"3-7 Image Saving Function (Page 16)"
NOTICE
• When the reading mode is the multi 1 read mode, image saving
is impossible with this operation.
• When the reading result can be judged before reaching the
specified number, the images until that point are saved.
• When the reading mode is the burst read mode, up to 8 images
are saved. In the burst read mode, the SR-750 Series saves
images of the specified number (burst scan count) for both the
latest images and judged images.
·····
·····
·····
Trigger input
Latest image
Judged image
Parameter bank
Latest
1
Bank
1
Latest
n-1
Latest
2
Latest
3
Latest
4
Bank
3
Bank
1
Bank
3
Bank
2
The SR-750 Series saves images of the specified number going back from the
image with the read result judged or the image when the trigger input turns OFF.
Latest
n
Bank
1
Judged
1
Judged
n-1
Judged
4
Judged
3
Judged
2
Judged
n
Trigger input
Code
Data communication
Scanning + decoding
OK/NG/ERROR output
OK/NG
ERROR
(When reading is successful) (When reading failed)
TRG BUSY output