Siemens MindConnect IoT2040 - Page 53

For more information about how to create a new data source see chapter Adding a data source
for MindConnect IoT2040.
Modbus TCP data source parameter
In order to connect a Modbus TCP device, you need to select the Modbus TCP protocol and
enter the following data source parameters:
Parameter Description
IP Address IP address of the Modbus device
Port Port number of the Modbus device (default: 502)
The following parameters are optional and can be adjusted for collecting data from slow Modbus
devices:
Parameter Description
byteTimeout
You can set the timeout interval between two consecutive bytes of the
same message received from the Modbus device. If the delay between is
longer than the given timeout, an error will be generated. Range: 500ms
(default) … 2000ms
responseTimeout
You can set the timeout interval used to wait for a response from the
Modbus device. If the waiting before receiving the response is longer than
the given timeout, an error will be generated. Range: 500ms (default) …
60000ms
responseSuspensionTime
If a byte timeout or a response timeout was detected, then this waiting
time is added before the next request is started. During this time any
response from the Modbus device will be flushed. Range: 0ms … 45000ms.
(default: 1000ms)
requestDelay
You can set the time between the response from the Modbus device and
the next request to this Modbus device. Range: 0ms (default) … 10000ms
Modbus TCP data point parameter
In order to collect the data of your Modbus TCP device, you must add new data points.
The following picture shows the data point parameter window:
Configuring protocols
4.4 Overview of Modbus TCP protocol for MindConnect IoT2040
MindConnect IoT2040
System Manual 8/202353