Many third-party software packages (and PLCs) include support for the open and well-documented Modbus protocol. Sealevel SeaI/O modules use the Modbus protocol for communication and control. SeaI/O modules with USB, RS-232, or RS-485 interfaces use the Modbus RTU protocol. Ethernet and wireless SeaI/O modules use the Modbus TCP protocol. More information is included in Sealevel SeaMAX library documentation.
The Modbus protocol is documented at www.modbus.org.
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