Pro Dex OMS has worked to maintain the availability of our mature product lines. Availability of purchased components to build these products is the gating factor. As the manufacturers discontinue these components, Pro-Dex OMS takes the opportunity to purchase some as a last-time buy. As the supply of those components is consumed and Pro-Dex OMS reaches the end of the supply, the product family is discontinued. In most cases, Pro-Dex OMS has designed new controller families to replace the obsolete controller families. Technical Support can help you in determining the correct new product family. Pro Dex OMS continues to maintain component inventory to provide evaluation and repair maintenance for most of the older motion controllers. The procedure for taking advantage of the evaluation and repair capability is covered in the Appendix of the User Manual.