Performance

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stephane edited this page Feb 27, 2011 · 1 revision

Typical Response Times of Ethernet Hardware

Information about how fast the response time could be for typical Ethernet hardware with Modbus TCP/IP. The results vary from 11.92us to 20ms.

[[11.92us, slave turnaround time not included|http://www.automation.siemens.com/WW/forum/guests/PostShow.aspx?PageIndex=1&PostID=207341&Language=en "smiffy"]]
[[250us, four bases could be updated in one millisecond|http://www.modbus.org/faq.php]]
[[20ms, Modbus TCPIP Command/Response time to and from a network slave device is typically 20ms|http://www.mynah.com/content/modbus-tcpip-ethernet-serial-bridge-performance]]

Please advise and share your experience regarding the response time of Modbus TCP/IP.

Tools to Evaluate Bandwith

There is test programs provided with libmodbus in tests directory to evaluate the performance on your environment.