Products Description
The Serial Port Module (IMSPM01) is an INFI 90 ® module that interfaces a computer with modules in a Process Control Unit (PCU). A computer can connect to an SPM directly or through a modem. Built-in Serial Port Module (SPM) functions support Bailey Controls computer or engineering work station software commands. These functions allow a computer to perform tuning and configuration functions, monitor module status and transfer data between it and PCU modules.
This instruction explains the module features, specifications and operation. It details the procedures to follow to set up and install an SPM. It explains troubleshooting, maintenance and module replacement procedures.
The system engineer or technician using the SPM should read and understand this instruction before installing and operating the module. In addition, a complete understanding of the INFI 90 Process Management System is beneficial to the user.
The Serial Port Module (IMSPM01) is a microprocessor based INFI 90 module that interfaces a computer with INFI 90 modules in a Process Control Unit (PCU). An SPM communicates with other modules over a module bus. Built-in SPM functions support Bailey Controls computer or Engineering Work Station (EWS) software commands. These functions allow computer access to module configuration I/O and status information. An IMSPM01 is a direct functional replacement for the Network 90 NSPM01.
Using an SPM and Bailey Controls software, a computer can perform tuning and configuration functions, monitor module status and transfer data between it and modules (up to 31) connected to the module bus.
The SPM drives two serial ports: port 1 and port 2. The computer can be connected directly or through a modem to port 2 at the faceplate RS-232C connector. This direct connection capability eliminates the need for additional termination hardware and cabling.
An optional Termination Unit (TU) with RS-232C connectors can be installed to connect a diagnostic terminal to port 1 on the SPM. A diagnostic terminal can be used to verify module bus communication, and to perform SPM tests.
When the SPM is installed in a PCU without the optional TU, the computer or modem connects to the faceplate RS-232C connector. Installing the SPM with the optional TU allows computer or modem connection to either the faceplate connector or a TU connector. Figure 1-1 illustrates the INFI 90 communication levels and the position of the SPM within these levels.
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