Can the ECS-700 COM741 communication card receive data in ASCII format?
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Can the COM741 communication card in the Central Control ECS-700 system receive data in ASCII format?
The serial communication module COM741-S is a gateway device for connecting serial heterogeneous devices to the ECS-700 system. By expanding the I/O bus, it enables the integration of data from third-party devices that use the same communication protocols—such as the MODBUS RTU protocol or custom protocols—into the ECS-700 system. This is what is stated in the official documentation; it’s not clear whether custom protocols include ASCII, so it’s advisable to consult the manufacturer.
There’s a custom protocol that you can explore on your own