Communication
RS485 Port - Serial COM1/COM2 RS485 ports are commonly used in multi unit systems and for longer distance communications.
All devices are connected in a bus structure (line). RS232 provides only point to point connection function while RS485 provides connection for multiple stations. Up to 32 stations (master or slaves) can be linked up in one segment. Half-duplex transmission system allowing transmission distances of up to 1.2 km.
RS485 is currently a widely used communication interface in data acquisition and control applications where multiple nodes communicate with each other.
Models PR-14 and PR-24 have a built-in RS485 Port with galvanic isolation. In addition to all models (except PR-12 series), you can connect an additional expansion module PR-RS485.
Serial COM Port Configuration
Universal Port - Serial COM0 Can work as RS232/USB
RS485 Port - Serial COM1 Except PR-12 Series
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