How to make a serial cable for CAS PD-II Scale (DIY)

We could not find many reliable references out there on how to make a serial cable CAS PD-II.

This post covers how to build your own serial cable to integrate CAS PD-II scale with MiPOS Software. Refer this link to how to set up the software after successfully connecting the hardware together.

* Information we provide here may be different from the information provided by the manufacturer.

It is always recommended to source the original cable from the Supplier for CAS PD-II Scale. The cable does not come in the box and needs to bought separately. Majority of the Scale Integrations for inhouse projects are tested before delivery, so customers only need to plug the cables with no setup required onsite.

This information is useful for someone trying to Integrate a CAS PD-II with MiPOS Software, supplied from a different source.

Things you need

 

Test your COM Port on POS Terminal or PC

1. Once you decide on which COM port to use, or the Virtual COM Port via USB to Serial Converter, Make a 9 pin D-Sub DB9 PCB Connector buy short pin 2 and pin 3. This is the easiest method for testing a COM Port.

UniTek (Prolific Driver) – $12.95 AUD
https://www.ebay.com.au/itm/USB-to-RS232-DB9-9Pin-Serial-Cable-Adapter-Converter-Windows-Win-10-Mac-Android/401118157257

UGreen (Prolific Driver) – $14.55 AUD (1m). Also available in 1.5m/2m/3m. GOLD pins
https://www.aliexpress.com/item/32611514539.html (RS232 Male Round Gold)

StarTech (Prolific Driver) $19.44 AUD
https://www.amazon.com.au/gp/product/B003WOWBBW

2. Install Putty. Or Hyper Terminal if you have access to this software. But we use Putty for simplicity.

3. Configure Putty as the following information and OPEN to connect.

COM1 – Select the Com Port
Speed (Baud) – 9600
Data bits – 7
Stop bits – 1
Parity – Even
Flow control – None

4. Test your COM port buy typing few Keys, you should see your Keys displayed if the COM Port is working.

** If you don’t get any feedback, try different COM Port. Check if you have short pin 2-3 together. This is a simple process, so you can’t go wrong.

Now, let’s make the cable.

Building the Serial Cable is a little complex task if you are new to soldering. But unfortunately, there’s no other way. We found to make other suggested cable configurations on the internet. It’s confusing because, none of them worked for us, even the one on Product Manual. This configuration is what we use in our Scale Integration.

 

 

PC Side of the Serial Cable also be constructed using RJ45 Socket

 

This is how your 2 connector ends should look like.

Crossover pin 2-3
Ground Pin 5 – Pin 7
Pin 4-6
Pin 7-8

 

Select CAS PD-II Scale mode to Type-2

If you have tested the COM port, created the serial cable and change the Scale mode, you are good to go ahead and setup MiPOS Software to integrate with CAS PD-II Scale.