Connect Scales to Square Point of Sale
Connect and troubleshoot your supported CAS PD-2 USB scale with Square Point of Sale.
Before you get started:
Make sure your Square app is up to date. The latest version of the Square Point of Sale app is required to connect to the scale.
Ensure you set up Items to sell by weight.
Display the National Measurement Institute certified sticker on your Square hardware.
Note: The CAS PD-2 USB scale is not supported with Square for Retail, Square for Restaurants, Square Invoices and Square Appointments apps.
National Measurement Institute Certified Sticker
Square has produced a sticker indicating the scale connection to our Point of Sale has been certified by the National Measurement Institute (NMI). When you purchase a USB scale or the cables through Square Shop, you will have been supplied a sticker with the NMI certification number.
You must clearly place this sticker on the device running the Square Point of Sale app (i.e. Square Stand, Android tablet/smartphone or Square Terminal). The sticker helps NMI field inspectors identify that Square has fulfilled all compliance regulations for the certification from the National Measurement Institute. Contact Square Support if you need a complimentary replacement sticker.
The CAS PD-2 USB scale is compatible with:
|Square Terminal with Hub||✔️|
|Android with Square Reader||✔️|
|iOS with Square Reader||✖️|
*This USB scale will only connect to Square Stand (1st and 2nd generation) for iPad (2021, 2020, 2019), iPad Air (2019) and iPad Pro 10.5."
For a list of all compatible hardware by device, check out our supported third-party hardware accessories.
Connect Your USB Scale
Note: The Square Point of Sale app can only connect to one scale at a time.
Troubleshoot Your USB Scale
Confirm you’re using the CAS PD-2 USB Scale with supported iPads with Square Stand, Square Terminal, or an Android smartphone or tablet.
Make sure your Square app is up to date. The latest version of the Square app for Android is required to connect to the scale.
Ensure you’ve correctly set up Items to sell by weight.
Check that you have a secure connection between your scale, cables, adapters, and any additional connected accessories.
Make sure you’re using the correct cables for your scale. The cable is included in the scale but if you need a replacement, purchase a Square Stand USB cable and Square Terminal or Android USB cable via Square Shop.
Note: The CAS PD-2 USB scale needs to be in ECR-5 mode to work properly.
To ensure your CAS PD-2 scale is set up in the right ECR (Extended Control Register) mode:
With the scale turned off, hold the T key and turn the scale on.
When Ecr SEt appears, release the T key.
The display will show tyPE X, where X is the current type setting. Use the * key to select type 5.
Press the 0 key to save.
Turn the scale off then back on again.
Label Printing Scales
We also support label printing scales if you don't need your scale connected directly to your Square Point of Sale.
Learn more about setting up items by weight, formatting barcodes, and scanning bar codes from label printing scales.