thread Unable to connect to CAS Scales with Square POS in Payments Troubleshooting

Unable to connect to CAS Scales with Square POS

Gov75 — Sat, 20 Sep 2025 18:38:13 GMT

I have 2 scales

CAS SW-RS

CAS PD-II

Both of them are not recognized in Square. It gives a message that the USB device is not protected.

I have a SQUARE STAND 1st generation, and according to the documentation this is supported for the CAS scales.

Its been really frustrating not being able to get it to work. Can someone help?

Re: Unable to connect to CAS Scales with Square POS

TheRealChipA — Tue, 27 May 2025 14:11:01 GMT

Hi there @Gov75.. Here is a link to the Square troubleshooting guide for scales. There is this important note about CAS scales -- "CAS SW-RS and CAS PD-2Z scales need to be in Extended Control Register (ECR-5) mode to work properly." Check CAS user guides/support pages for instructions on how to do that.