# Pickmaster 3 - PPACAL Problem

**URL:** https://tech-community.robotics.abb.com/t/pickmaster-3-ppacal-problem/5633
**Category:** Robot Controller
**Created:** [July 24, 2013, 11:46am UTC](https://tech-community.robotics.abb.com/t/pickmaster-3-ppacal-problem/5633 "2013-07-24T11:46:52Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![dhyan](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/dhyan/32/2452_2.png) [@dhyan](https://tech-community.robotics.abb.com/u/dhyan)
#### Post date: [July 24, 2013, 11:46am UTC](https://tech-community.robotics.abb.com/t/pickmaster-3-ppacal-problem/5633/1 "2013-07-24T11:46:52Z")

</div>

Dear All

We got a problem with doing first step on Pickmaster 3 setting (calculate Count per Meter), because **we failed to do PPACAL**.  
After we do PPACAL, On jogging menu : CNV1 is activated and distance show 0.0 mm.  
When I run conveyor, diplay show a positif value (higher than 0.0 ) .  
But **when I stop conveyor, the value go back to 0.0**.  
the value should be hold on the current value, if we can do PPACAL successfully.

Here our Strobe Wiring Diagram (attachment file):  
The doManSync1 (connector: X2.1, unit mapping: 8) is connected to Start Signal (pin-9) on Encoder Unit.  
The Strobe of camera (Black wire) is connected to Start Signal (pin-9) on Encoder Unit too.

Last time we got the same problem (few years ago):  
When we disconnected the strobe of camera from pin-9 Encoder board (now only doManSync1 is connected to pin-9), the problem was gone.  
We can do PPACAL (The doManSync1 LED on I/O board is flash once) and the position value is hold on the current value.

But today, we got another problem:  
When we disconnect the strobe of camera to pin-9 Encoder board (now only doManSync1 is connected to pin-9), the problem is still happened.  
We failed to do PPACAL (The **doManSync1 LED on I/O board is not flash at all)** and the position value will go back to 0.0 everytime we stop conveyor.

Is there someone who has an idea about this problem?

Thanks and regards  
[Pickmaster 3 - PPACAL Problem.pdf](https://tech-community.robotics.abb.com/uploads/short-url/p8PcUTCUQvYexAldF9CPby2kLmt.pdf) (185 KB)