美国采购需求：电池管理系统，BMS电池，BMS模块，锂BMS，BMS锂电池，适用于Lifepo4的BMS

I'm looking for some assistance regarding the smart BMS with a 4.3-inch LCD touchscreen that supports various communication protocols, including WiFi and Bluetooth. I have encountered a couple of issues: First, I am unable to change the State of Charge (SOC) check voltage, which is critical for my application's performance. Additionally, I've noticed that the CAN communication between the BMS and charger is not functioning as expected, and I'm seeking guidance on the proper wiring setup to resolve this issue. Could you provide detailed instructions or support regarding these concerns? Specifically, I'm interested in understanding how to adjust the SOC check voltage and troubleshoot the CAN communication. Any documentation or technical assistance you can offer would be greatly appreciated, as I want to ensure that everything is configured correctly for optimal operation. Thank you!