Description

The Trigger Accessory is an optically activated trigger designed for use with the PixeLINK PL-B Machine Vision Cameras.  It consists of a slotted, optical switch and a nine-pin micro-d cable receptacle connected by a 2-meter cable, as shown in Figure 1.  The trigger is activated by interrupting or completing the optical path within the 1/8” (3 mm) slot, depending on the trigger polarity.



 
Figure 1:  Trigger Accessory


Connection

The PL-B Trigger Accessory's nine-pin cable plug attaches to the “Control” connector on the back of the PL B series Machine Vision Camera. 

Triggering

Negative trigger—Activate the trigger by inserting an opaque object into the 1/8” (3 mm) slot in the trigger switch, interrupting the optical path. 

Positive trigger—Insert an opaque object into the 1/8” (3 mm) slot in the trigger switch.  Activate the trigger by removing the object, completing the optical path.




 
Figure 1:  Micro-D 9 Male Plug Pinout.


Pin Assignment


PinWire ColorPin Name FunctionComments
1
Black
POWER (Firewire camera only)
Firewire cable power, 8-30 VDC (typically 12 V)
Maximum current available from this pin is 250 mA.
1
Black
Power (USB2 camera only)
+ 5.5 VDC (internally generated by camera).
Maximum current available from this pin is 50 mA.
2
Brown
GP2+
Positive terminal of optically isolated General Purpose Output 2.
Optical isolator open collector output. Provides current sink to pin 3 when GP2 is active. Also see GPO notes below chart.
3
Red
GP2-
Negative terminal of optically isolated General Purpose Output 2
Optical isolator emitter output. Typically connected externally to pin 9 (Ground).
4
Orange
GP1+
Positive terminal of optically isolated General Purpose Output 1
Optical isolator open collector output. Provides current sink to pin 5 when GP1 is active. Also see GPO notes below chart.
5
Yellow
GP1-
Negative terminal of optically isolated General Purpose Output 1.
Optical isolator emitter output. Typically connected externally to pin 9 (Ground).
6
Green
TRIGGER+
Positive terminal of optically isolated trigger input
See trigger notes below chart.
7
Blue
TRIGGER-
Negative terminal of optically isolated trigger input
See trigger notes below chart.
8
Violet
(no connection)
(not used)

9
Grey
GROUND
Logic and chassis ground