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Error codes and messages Articles
Modbus TCP device connection status codes
Added on Fri, Dec 14, 2012
The TCP error codes were revised in a more recent version of the operating system. We have found that documentation in the 'Quick Help' section in some older devices did not get updated along with the code. The updated TCP connection status... Read More
Remotely Detecting Offline Device (or Device Errors)
Added on Sat, Dec 22, 2012
A common question is "how can I monitor device status?" or "how can I detect if the Modbus slave device is offline?" There are two approaches to answering this question. One option is to read a register containing an error code. The other is to cause... Read More