ABB NDCU-12C是一种基于计算机的设备，它属于PCD23系列。至于PCD231B101控制器，是ABB公司生产的Advant控制器450（AC450）中的一种。Advant控制器450（AC450）是ABB公司的一款多功能大型控制器，用于混合二进制、调节和监督控制，可以单独使用，也可以作为DCS中的集成控制器，与其他设备通信。该控制器于1995年推出，并在2020年之前一直处于产品生命周期活动阶段。世界各地的许多工厂仍在其工厂中运行旧的AC450控制器。至于最新的800xA DCS系统与现有的AC450控制器的接口，一些工厂已经完全取代了Advant OCS系统，而另一些工厂则将旧的控制器替换为新的控制器。

ABB PCD235B1101 is a computer-based device that belongs to the PCD23 series. As for the PCD231B101 controller, it is one of ABB's Advanced controller 450 (AC450). The Advant Controller 450 (AC450) is a multifunctional large controller from ABB, used for mixed binary, regulatory, and supervisory control. It can be used alone or as an integrated controller in DCS to communicate with other devices. The controller was launched in 1995 and has been in the product lifecycle activity stage until 2020. Many factories around the world still operate old AC450 controllers in their factories. As for the interface between the latest 800xA DCS system and the existing AC450 controller, some factories have completely replaced the Advanced OCS system, while others have replaced the old controller with a new one.