This page describes the different possibilities for testing a communication channel from the debugging screen.
Sending a request to an non-server or unconnected slave address results in an error message.
When the module has been configured in Uni-Telway master mode, the debugging window can be used to send a UNI-TE request to one of the slaves on the bus.
When the module has been configured Uni-Telway slave mode, the channel test is limited to the master device.
The Channel Test window allows the following requests:
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Identification: Prompts the Identification request to be sent to the designated slave.
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Enter request: Allows a UNI-TE request, other than those provided by the command buttons, to be sent to the designated slave. Selecting this function gives access to a screen that allows you to select the parameters that are specific to the request (request code must be coded in hexadecimal).
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Mirror: Allows a mirror request to be sent to the designated slave. Selecting this function gives access to a screen that allows you to select the length of the character string to be sent (a maximum of 80 characters ). The PLC then sends this character string (ABCD.) to the destination device. The latter automatically sends the character string that was received back to the sender.
