KEYENCE SR-750 Series - Manual (Page 15)

15 E SR-750 UM
Input terminal status and operation
The table below shows the relationship between the status of the input terminal
and the operation of the assigned function.
„ Synchronous IN LED
Users can set the SR-750 Series to illuminate its IN LED when the IN1 or IN2
terminal turns on. When both IN1 and IN2 terminals synchronize with the IN LED,
the LED illuminates based on the OR condition of the terminal status.
(By default, only the IN1 terminal synchronizes with the LED.)
„ Input polarity setting
The polarity of the input terminal can be selected from "N.O. (normally open)
contact" or "N.C. (normally closed) contact".
(By default, "N.O. contact" is selected.)
The same input polarity is set for IN1 and IN2.
„ Power-on trigger setting
Normally, the input terminal recognizes the change in the input signal (ON/OFF)
after the SR-750 Series is turned on and its operation stabilizes.
The input terminal does not operate if the input signal turns on before the operation
stabilizes (approximately 500 ms after power on).
If "Power-on trigger" is enabled, the SR-750 Series recognizes the input ON status
during the start-up period, and after the operation stabilizes, it performs the
operation specified for the input signal.
(By default, "Power-on trigger" is disabled.)
Operation of Norm. open and Norm. closed
„ Norm. open (Normally open)
• Normal
„ Norm. closed (Normally closed)
• Normal
• Power-on trigger setting
„ Required input duration setting
Users can set the "Required input duration", which is the period required for the ON
status of the input terminal to be recognized. The function assigned to the input
terminal is activated after the input stays on for specified time or longer.
(Required input duration setting range: Selectable from 1 ms, 2 ms or 10 ms;
default setting is 1 ms.)
Function assigned to the
input terminal
ON OFF
Trigger input (TIMING) Start reading. Stop reading.
Preset input (PRESET) Start preset data registration. Finish preset data registration.
Start test mode. (TEST) Activate the test mode. Quit the test mode.
Stop PLC error Stop error ―
Tuning operation (TUNING) Start quick calibration Quit quick calibration
ON
Timing input
Reading operation
ON
Timing input
Reading operation
ON
Timing input
Reading operation
Function and Operation of the Output Terminals (OUT1, OUT2 and OUT3)
Functions assigned to the output terminals
The following functions can be assigned to the output terminals (OUT1 to OUT3).
You can assign one or more functions to each output terminal.
„ Result output
This function outputs judgment results according to the SR-750 Series operation.
• OK.................... This signal is output when a bar code is read successfully or
when the comparison/verification against preset data matches.
• NG.................... This signal is output when the comparison/verification against
the preset data does not match.
• ERROR ............ This signal is output when a read error occurs.
• STABLE............ This signal is output when reading is stable ("Matching level
assessment function" or "Code quality verification function" is
enabled and the matching level or Code quality verification result
exceeds the set threshold).
• UNSTABLE ...... This signal is output when reading is unstable ("Matching level
assessment function" or "Code quality verification function" is
enabled and the matching level or Code quality verification result
falls below the set threshold).
• PRESET OK .... This signal is output when the preset data is registered
successfully.
• TUNING OK ..... This signal is output when the calibration is complete.
„ Operation output
This output function notifies that the SR-750 Series is currently running.
• TRG BUSY.......... During the start-up period, trigger input, preset data
registration, calibration, test mode, or while images are being
sent to FTP, bank numbers are being displayed, live view data
are being sent, monitoring is being performed, while the laser
pointer is on, images are being saved to ROM, the quick setup
codes are being read or being scripted
• LOCK BUSY ....... Forced trigger lock is being applied.
• MODE BUSY....... The quick setup code is being read, during test mode
• ERR BUSY.......... Error occurred (buffer full, setting save error)
„ External light control output
• EXT. LIGHT......... This signal is output to control external illumination.
Output terminal operation
The output terminals operate differently depending on the assigned function. There
are three types of operations as shown below:
„ OK, NG, ERROR, STABLE, UNSTABLE, PRESET OK, and
TUNING OK output
The above signals turn on the output for the specified output ON time when the
respective event occurs.
* For the above output functions, a higher priority is assigned to the output of the
function which occurred last.
Consequently, when the next operation occurs during the output ON time of the
previous operation, the signal is switched to output the signal of the higher priority
function.
NOTICE
• The result outputs (OK, NG, ERROR, STABLE, UNSTABLE,
PRESET OK, TUNING OK) and the outputs in operation (TRG
BUSY, LOCK BUSY, MODEBUSY, ERR BUSY) and EXT.LIGHT
cannot be set for the same terminal.
• EXT.LIGHT can be assigned to OUT3 only. Also, when
EXT.LIGHT is assigned to OUT3, no other output can be
assigned to OUT3.
ON
OK/NG/ERROR
STABLE/UNSTABLE
PRESET OK/TUNING OK ON
Event occurrence
Period of time set for output ON time