VC4XXX_HW.pdf – Hardware Documentation VC4XXX Smart Cameras
1996-2014 Vision Components GmbH Ettlingen, Germany
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6.2 Trigger-/ V24- (RS232)-/ Keypad- / Encoder Interface
The trigger interface now incorporates 4 different functions:
1. Image trigger input for hardware controlled image acquisition.
2. Incremental encoder interface (from July 2006 – cameras with S/N XX1XXXX).
3. Serial RS232 interface (can not be used at the same time as the encoder interface).
4. Keypad interface (uses the serial input of the serial interface).
Note the following important changes from the VC20XX series:
-
The serial interface of the VC4XXX cameras now connects to the trigger interface – a new cable is
required and the pin allocation is different from VC20XX serial cameras.
-
The “TrigIN –“ trigger input form the VC20XX has been omitted. The trigger input signal “TrigIN”
level now has to be 2.4 to 5V TTL relative to the trigger interface ground, pin 3. Existing trigger
circuits for VC20XX cameras have to be adjusted to the VC4XXX, or the camera may be
damaged. Sample circuits are provided in section 6.2.5.
-
The trigger input is no longer opto-isolated – use own protection if required.
-
The first VC40XX cameras had no integrated pull down resistor as shown in section 6.2.5. Since
the trigger input is floating in this case, provide own external pull up resistor or connect TTL push/
pull sensor.
-
A new keypad is required – the VC20XX keypad is not compatible with VC4XXX cameras! Refer
to the “7.2” section for details.
Note the following important changes from the VC40XX cameras shipped until July 2006:
-
New serial number for all VC4XXX with encoder input – XX1XXXX instead of XX0XXXX.
-
New models now boot with serial output inactive to protect connected encoder. Refer to section 8
for information on enabling the serial input.
-
The camera operating systems of both hardware versions are not compatible. Do not install an
incompatible OS, as the camera hardware might get damaged!
-
The following table shows the last OS version for XX0XXX cameras and the first OS Version for
XX1XXXX cameras:
Camera
models
Latest VCRT Versions for XX0XXXX
cameras (without encoder interface)
First VCRT Versions for XX1XXXX
cameras (with encoder interface)
VC4038
VCRT 5.23
VCRT 5.24-8
VC4065
VCRT 5.24-3
VCRT 5.24-8
VC4066
VCRT 5.23
VCRT 5.24-8
VC4068
-
VCRT 5.24-11
VC4466
VCRT 5.24-3
VCRT 5.24-8
VC4468
-
VCRT 5.24-13
“VC Base Family” cameras VC4016 and VC4018 do not include an Encoder Interface.
VC4058, VC4438, VC4458, VC4465 and VC4472 all feature an Encoder Interface from the start.
Multiple use of the trigger interface:
A “Y” adaptor cable is available for connecting several components to the trigger interface – refer to
section 6.2.4 for details. The use of the serial input and the encoder interface is not possible at the
same time.
!
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