SM810K01处理器模块
INFI-NET是单向的由所有INFI 90节点共享的高速串行数据高速公路。INFI-NET利用复杂的计算机接口进行数据交换。这些计算机接口使用最先进的INFI 90模块。意向用户安装、操作或维护INFI-NET至计算机接口的人员在执行任何安装、操作和维护程序之前，应阅读本手册。安装需要有经验处理电子电路并熟悉通信网络的工程师或技术人员。计算机接口描述计算机接口是INICI01和INICI03 INFI-NET到计算机接口。INNIS01网络接口从模块（NIS）是所有INFI-NET到计算机接口的一部分。它是节点和INFI-NET循环之间的智能链接。NIS模块和其他模块构成特定的计算机接口。参考图1-1。INICI01 INFI-NET至计算机接口INICI01-INFI-NET至计算机接口（ICI）由NIS模块和INICT01 INFI至计算机传输模块（ICT）组成。此计算机接口允许主机访问点数据。点数据可通过RS-232-C串行链路以高达19.2千波特的标准速率获得。INFI-NET到计算机的接口是通过主机上的软件进行命令驱动的。ICI计算机接口从主机接收命令，执行命令，然后答复主机。
INICI03 INFI-NET到计算机接口
INICI03 INFI-NET到计算机接口（ICI）由NIS模块、INICT03 INFI-NET到计算机传输模块（ICT）和IMMPI01多功能处理器接口模块（MPI）组成。此计算机接口允许主机访问点数据。点数据可通过RS-232-C串行链路以敢达19.2千波特的速率或通过SCSI并行端口获得。INFI-NET到计算机的接口是通过主机上的软件命令驱动的。ICI计算机接口从主机接收命令，执行命令，然后答复主机。NIS模块是一个与其他INFI-NET通信模块协同工作的I/O模块。这允许节点与INFI-NET循环上的任何其他节点通信。NIS模块是占据模块安装单元中一个插槽的单个印刷电路板。电路板包含基于微处理器的通信电路，使其能够与其他INFI-NET通信模块接口。所有INFI-NET到计算机的接口都需要特定的通信模块和NIS模块。面板上的两个锁紧螺钉将NIS模块固定到模块安装单元。面板上有16个LED，显示错误代码和事件/错误计数。NIS模块有三个用于外部信号和电源的卡边缘连接器（连接器P1、P2和P3）。接头P1连接到公共（接地）和+5 VDC电源。接头P2将NIS模块连接到I/O扩展器总线，以与其节点内的控制模块通信。使用连接到终端单元或终端模块的电缆通过连接器P3与其他节点进行串行通信。节点之间的通信通过连接每个节点上的终端单元或模块的同轴或双轴电缆进行。
INFI-NET is a unidirectional
high speed serial data highway shared by all INFI 90 nodes. INFI-NET utilizes sophisticated computer interfaces for data exchange. These computer interfaces use state-of-the-art INFI 90 modules. INTENDED USER Personnel installing, operating, or maintaining the INFI-NET to computer interfaces should read this manual before performing any installation, operation, or maintenance procedures. Installation requires an engineer or technician experienced handling electronic circuitry and familiar with communication networks. COMPUTER INTERFACE DESCRIPTION The computer interfaces are the INICI01 and INICI03 INFI-NET to Computer Interfaces. The INNIS01 Network Interface Slave Module (NIS) is a part of all INFI-NET to computer interfaces. It is the intelligent link between a node and the INFI-NET loop. The NIS module and other modules make up a specific computer interface. Refer to Figure 1-1. INICI01 INFI-NET to Computer Interface The INICI01 INFI-NET to Computer Interface (ICI) is made up of the NIS module and the INICT01 INFI-NET to Computer Transfer Module (ICT). This computer interface gives a host computer access to point data. Point data is available through an RS-232-C serial link at standard rates up to 19.2 kilobaud. The INFI-NET to computer interface is command driven through software on the host computer. The ICI computer interface receives a command from the host computer, executes it and then replies to the host computer.
INICI03 INFI-NET to Computer Interface
The INICI03 INFI-NET to Computer Interface (ICI) is made up of the NIS module, the INICT03 INFI-NET to Computer Transfer Module (ICT), and the IMMPI01 Multi-Function Processor Interface Module (MPI). This computer interface gives a host computer access to point data. Point data is available through an RS-232-C serial link at rates up to 19.2 kilobaud or through a SCSI parallel port. The INFI-NET to computer interface is command driven through software on the host computer. The ICI computer interface receives a command from the host computer, executes it and then replies to the host computer.The NIS module is an I/O module that works in conjunction with the other INFI-NET communication modules. This allows a node to communicate with any other node on the INFI-NET loop. The NIS module is a single printed circuit board that occupies one slot in the module mounting unit. The circuit board contains microprocessor based communication circuitry that enables it to interface with other INFI-NET communication modules. All INFI-NET to computer interfaces require a specific communication module or modules and the NIS module. Two latching screws on the faceplate secure the NIS module to the module mounting unit. There are sixteen LEDs on the faceplate that display error codes and event/error counts.The NIS module has three card edge connectors for external signals and power (connector P1, P2 and P3). Connector P1 connects to common (ground) and +5 VDC power. Connector P2 connects the NIS module to the I/O expander bus to communicate with a control module within its node. Serial communication to other nodes is through connector P3 using a cable connected to a termination unit or termination module. Communication between nodes is through coaxial or twinaxial cables that connect the termination units or modules on each node.
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