![]() Perle IOLAN Device Servers are the solution. Network Administrations need a way to connect these Modbus serial devices to Modbus/TCP or Modbus/UDP compliant hosts over Ethernet. However, there is valuable equipment installed that have serial modbus COM ports. Equipment with an Ethernet COM port and support for Modbus/TCP can be used on standard Ethernet networks providing interconnection over greater distances and with more flexibility. As technology evolved, the Industrial Automation industry created the Modbus/TCP protocol to enable direct attachment of equipment over Ethernet. ![]() Modbus masters poll modbus slaves to send and retrieve information. The Modbus protocol contains device (host) addressing and enables communication between multiple entities on the same serial (i.e., RS485) line.
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