This function is used to read the contents of eight Exception Status outputs in a remote device. This function should only be used if the device is a serial device, as the Modbus specification defines this as a serial-only function.
The function provides a simple method for accessing this information because the Exception Output references are known (no output reference is needed in the function).
The normal response contains the status of the eight Exception Status outputs. The outputs are packed into one data byte, with one bit per output. The status of the lowest output reference is contained in the least significant bit of the byte.
The contents of the eight Exception Status outputs are device specific.
To configure this step open the Edit Step window from Sequence editor.
In the configuration dialog box, you can change the following settings:
· Connection Name: Connection used to communicate with the device.
The exception code of the eight exception status is stored in Step.Result.ExceptionCode
|
|
Note Please read Execution Trace and Steps Variables chapter to learn more about accessing configuration of this step and how to access data read. |
See Also
