How many way to communication between Weintek HMI and UR

Technical Questions
1

the task is using HMI to control some simple task without coding
I have using Modbus Server to connect HMI and UR
but there is a lot of limit for communication, MODBUS cannot send float, cannot send String and also negative value too, maybe i need to change a communication protocal or is there have some solution ? is there any better way to communication between HMI and UR
thank you

2

EtherNet/IP is also a possibility, if your HMI supports it.

But MODBUS is the protocol most used to communicate directly to a HMI, as far as I know. :slight_smile: If you don’t want a PLC inbetween.