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Trigger and GPOs - PL-A700 Series - Enclosed Cameras : PixeLINK Support

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Trigger and GPOs - PL-A700 Series - Enclosed Cameras

Modified on: Wed, 9 Mar, 2016 at 3:42 PM

Enclosed cameras with an MV (Machine Vision) interface on a 6-pin round Hirose connector provide optically-

isolated connections for one external trigger and two general purpose outputs. The mating connector is a Hirose

HR10A-7P-6P, a 6-pin round plug connector with solder-cup pins for the cable wires.

MV pinout and description

PinPin

NameFunction Comments

(Pinout is viewed on the

back of the camera, or at

the solder-end of the

mating connector)

1 POWER

FireWire

cable power,

8-30 V DC

(typically 12

V)

Maximum current available from this pin is 250 mA.

2 TRIGGER+

Positive

terminal of 

optically

isolated

trigger input

To initiate a "positive" trigger, apply a voltage of between 5V and 12V (4-11 mA) to the trigger terminals.

The optically isolated trigger input circuit includes an

internal 1 Kohm series resistor. When using a voltage

higher than 12V, add an external resistor with adequate

power rating.

 A typical application of the trigger input is to connect

Pin1 (POWER) to Pin 2 (TRIGGER +) and use the

open collector output of an external position sensor 

device to complete the circuit from Pin 3 (TRIGGER -)

to Pin 4 (GROUND). PixeLINK API-Refer to the functions PxLSetFeature,

PxLGetFeature and Trigger Types.

3 TRIGGER-

Negative

terminal of 

optically

isolated

trigger input.

4 GROUND

Logic and

chassis

ground

5 GP1

General

Purpose

Output (GPO)

1, for strobe

Open-collector current sink output from optical isolator.

Provides current sink to Pin 4 (GROUND) when

GP1/GP2 (as appropriate) is active.

Maximum current is 15 mA.Maximum voltage with respect to ground is 40 V. 

PixeLINK API-Refer to the functions PxLSetFeature,

PxLGetFeature and GPIO Types.

6 GP2

General

Purpose

Output (GPO)

2, for strobe

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Trigger and GPOs - PL-A700 Series - Enclosed Cameras : PixeLINK Support

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MV interface schematic

The trigger inputs are designed to work with a floating differential signal which will operate with a supply voltage

between 5V and 12V across the trigger terminals. With the Trigger polarity set to Positive, a rising voltage will

cause a trigger. A falling voltage will cause a trigger if the trigger polarity is negative. The trigger input can be

either posit ive or negative pulse. The minimum pulse width depends on the debounce delay set in the camera –

typically at least 50 microseconds for analog signals and at least 1 microsecond for TTL signals.

The GPO pins are open-collector current sink outputs. The GPOs can handle a maximum of 15mA and 40V with

respect to ground. To use them with TTL inputs, the GPO output lines must be pulled high with a 1K ohm

resistor.