Delphi manual RS-232 Setup, Buffering and Flow Control, Baud Rate

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SAINT

Keyword 2000 to RS-232 Gateway

01/20/04

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3 RS-232 Setup

The gateway uses the following RS-232 parameters:

-8 Data Bits

-1 Stop Bit

-No Parity

The gateway supported baud rate: 57600.

Baud Rate

57600

The supported baud rate is sufficient for communicating with the Class2, Keyword, ACP, BEAN, and slower CAN bus’s. However, USB connection is recommended for high speed CAN communications.

3.1Buffering and Flow Control

Whenever the gateway receives a new message from the host, it will set the CTS line until the message can be processed. The host should not send data to the gateway while the CTS line is set. Due to the speed of the gateway processor, it is unlikely that the host will ever see the CTS line set.

The gateway buffers 64 bytes to send to the host. The gateway polls the RS-232 transmitter in the main loop to send data to the host. In some cases, the RS-232 transmit buffer will overflow. This should occur only when receiving CAN or IIC messages at a very fast rate. This will cause an ERc_RSFull error to be generated and the data to be lost

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Contents Audio Systems Delphi Automotive Systems Corporation Table of Contents SaintRevision Log Precedence IntroductionScope Definitions and NomenclatureOverview RS-232 Setup Buffering and Flow ControlBaud Rate Message Format Data StreamMessages IDs Gateway Commands Gateway MessagesHeader Data Description Gateway Reports Header Description Data BytesCode Description Keyword 2000 Commands Keyword 2000 MessagesKeyword 2000 Timeout/Errors Transmitted Keyword 2000 Messages Received Keyword 2000 Messages Format byteLength byte Target address byteSource address byte Data bytesBus and Power Connector J4-DB9M ConnectorsRS-232 Connector J3-DB9F DE-9s Pin # UseFlash programming connector Pin # Mnemonic Use / descriptionLEDs PurposeSwitches Mnemonic PurposeSoftware Packages Name Hardware Date Description Version03/12/03 Keyword 2000 initial release

Gateway Systems Analysis INterface Tool (SAINT), RS-232 specifications

Delphi Gateway Systems Analysis Interface Tool (SAINT) is a robust system that brings efficiency and precision to the analysis, monitoring, and management of data between disparate systems. Designed mainly for industrial settings where reliable communication is crucial, SAINT leverages the RS-232 communication standard, a long-established protocol that facilitates serial communication between devices.

One of the main features of SAINT is its ability to connect multiple devices through RS-232 interfaces, establishing a seamless data flow. This is particularly beneficial in environments where legacy systems still play a significant role. The tool utilizes the well-known characteristics of RS-232, such as point-to-point communication, which allows for straightforward setup and configuration. This makes it easy to connect various sensors, computers, and controllers that utilize RS-232 for data exchange.

Another critical feature of SAINT is its user-friendly interface, which enables operators to visualize data and manage connected devices effortlessly. Real-time monitoring and diagnostics are integral to the system, allowing users to detect anomalies or failures promptly. The tool also supports data logging, capturing historical data that can be analyzed for trends or performance evaluations, thereby enhancing decision-making processes.

In terms of technologies, SAINT is built on modern programming languages and frameworks, ensuring high levels of efficiency and scalability. The integration with existing systems is made easier through programmable logic, which allows for custom configurations tailored to specific operational requirements. This flexibility makes SAINT suitable for various applications, including manufacturing, transportation, and utility services.

The compatibility with multiple baud rates is another significant characteristic, providing users with the ability to adjust communication speed according to their needs. This compatibility, combined with built-in error-checking routines, enhances data integrity and system reliability.

Overall, Delphi Gateway Systems Analysis Interface Tool (SAINT) provides a comprehensive solution for seamless data integration across diverse platforms, making it an essential component in modern industrial communication setups. With its emphasis on RS-232 technology, user accessibility, and flexible integration options, SAINT is positioned as a leading tool for systems analysis and monitoring in a variety of operational environments.