These are (were) Circon's first generation of programmable controllers. They were designed pre-LNS using Windows API calls to configure a full featured I/O lonworks node. There's a large base of these controllers along with other API based Circon (or other third-party) nodes.
You can integrate UHC-200 and 201P controllers with LNS, but it becomes difficult to maintain and configure them. You can't use Plug-ins with series 200 devices and likewise you can't use API to configure nodes in a LNS database.
You can still find replacement series 200 devices (not from Circon), but IMHO, replace them with an LNS equivalent.
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