Description

The MELSEC-Xplorer interface is suitable for measurement data acquisition with ibaPDA from Mitsubishi MELSEC controllers. The data is cyclically read by ibaPDA instead of being sent by the PLC.

In the MELSEC controller, no programming and configuration is necessary for establishing a connection between ibaPDA and a controller with defined IP address and for sending the respective signals. Only the Mitsubishi MC protocol must be enabled in the PLC parameters on the controller (GX Works).

The connection between ibaPDA and MELSEC control can be established either over the network interface of the CPU or over an Ethernet communication module.

Interface configuration

The interface has the following features and configuration options:

Set all values to zero when the connection to a PLC is lost.

If enabled, all measured values of the PLC are set to zero as soon as the connection is lost. If this option is disabled, ibaPDA will keep the last valid measured value at the time the connection was lost in the memory.

Start acquisition even if a PLC is not accessible

If this option is enabled, the acquisition will start even if a MELSEC controller is not accessible. In case of an error, an alert is indicated in the validation dialog. If the system has been started without a connection to the MELSEC controller, ibaPDA will try to connect to the PLC at regular intervals. The measured values stay at zero as long as the PLC is disconnected.

Allow inaccessible operands

Enable this option to start the acquisition even if no symbols are accessible. The inaccessible symbols are indicated as warnings in the validation dialog instead of errors. This can only occur if the address book is not up-to-date.

If you do not enable this option, then the acquisition does not start if there are inaccessible symbols.

<Open log file>

If connections to Logix controllers have been established, all connection-specific actions are logged in a text file. Using this button, you can open and see this file. In the file system on the hard disc, you will find the log file in the program path of the ibaPDA server (…\ProgramData\iba\ibaPDA\Log\). The file name of the current log file is LMelsecLog.txt; the name of the archived log files is MelsecLog_yyyy_mm_dd_hh_mm_ss.txt.
Connection table

For information about the connection table, see Connection table.
Available modules

  • MELSEC
Product name

ibaPDA-Interface-MELSEC-Xplorer (Art. no. 31.000008)