Requests Available for the Communication Channel Test

Introduction

This page describes the different possibilities for testing a communication channel from the debugging screen.

Test Conditions

Sending a request to an unconnected station results in an error message.

Available Requests

Window Test station allows the following requests:

Identification: Prompts the Identification request to be sent to the designated remote station.
Counters: Prompts the sending of the request for the Reading of the error counters to the designated station.
Counters: Prompts the designated station’s error counters to be reset to zero.
Request input: Allows a UNI-TE request, other than those provided by the command buttons, to be sent to the designated station. The choices available in this function give access to a screen that allows you to select the parameters that are specific to the request (request code must be coded in hexadecimal).
Mirror: Allows a mirror request to be sent to the designated station. 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. This automatically sends the character string that was received back to the sender.