Two options:
1. NI OPC Server supports FX-24MR. We need to find out what's the difference beween the two models (60MR and 24MR). If the communication protocol is the same but the registers are more/different, then you _may_ be able to use the FX-24MR object. Of course you will not have access to the additional registers. However, if the underlying communication protocol itself is different between the two then this won't work.
2. You can use the "Mitsubishi's MX Component" as an ActiveX in LabVIEW-DSC. See the second answer by Mark Lea from the following post for details:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000DE440000&UCATEGORY_0=_51_%24_6_&UCATEGORY_S=0
Hope this helps,
Khal
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