ABB DSDX404

尽管有这些创新的方法可以消除传统的I/O工程依赖性,但旧的习惯难以改变。事实上,最近对控制阅读器的调查表明,模拟仪器仍然占资本项目I/O点的55%,而38%是通过现场总线连接的,7%是通过无线连接的(图1)。显然,流程行业仍然欣赏模拟仪器的简单性和熟悉性。因此,需要进行第三项创新,使项目工程师摆脱固定功能I/O模块的僵硬专制:单一通道、灵活的I/O,例如 巴西广播局的选择I/O 提供服务。可用于流程自动化和安全应用,这一扩展到系统800XA系列的灵活I/O解决方案允许每个I/O通道使用插件硬件模块单独描述。这种方法以多种方式简化了项目的执行。

Although these innovative methods can eliminate traditional I/O engineering dependencies, old habits are difficult to change. In fact, recent surveys on control readers have shown that analog instruments still account for 55% of capital project I/O points, while 38% are connected through fieldbus and 7% are connected wirelessly (Figure 1). Obviously, the process industry still appreciates the simplicity and familiarity of analog instruments. Therefore, a third innovation is needed to enable project engineers to break free from the rigid authoritarianism of fixed functional I/O modules: single channel, flexible I/O, such as the selective I/O service provided by the Brazilian Broadcasting Agency. Can be used for process automation and security applications, this flexible I/O solution that extends to the system 800XA series allows each I/O channel to be described separately using plug-in hardware modules. This method simplifies project execution in multiple ways.