You can display timing marks for a variety of intervals in the data analyzer screen. These timing marks can help you determine communication-timing characteristics.Press [B] to start the data analyzer. After the key is pressed, all data transmitted and received on the currently selected port will be displayed. The following illustration shows an example.Important: When in analyzer mode, program execution will slow down. Only use this tool during a troubleshooting session. Before disconnecting from the Config/Debug port, please press [S] to stop the data analyzer, and then press [M] to return to the main menu. This action will allow the module to resume its normal high speed operating mode.
Reading Status Data from the Module
The MVI69-MCM module returns a 29-word Status Data block that can be used to determine the module’s operating status. This data is located in the module’s database at registers 6670 to 6698 and at the location specified in the configuration. This data is transferred to the CompactLogix or MicroLogix processor continuously.
RS-232, RS-485 or RS-422 (jumper selectable) RJ45 (DB-9F with supplied cable) RS-232 handshaking configurable 500V Optical isolation from backplane Shipped with Unit RJ45 to DB-9M cables for each port 6-foot RS-232 configuration Cable
Product Specifications
The MVI69 Modbus Master/Slave Communication Module allows Rockwell Automation® CompactLogix or MicroLogix® processors to interface easily with other Modbus protocol compatible devices. The module acts as an input/output module between the Modbus network and the CompactLogix or MicroLogix backplane. Compatible devices include not only Modicon® PLCs (almost all support the Modbus protocol) but also a wide range of process and control devices from a variety of manufacturers. Many SCADA packages also support the Modbus protocol.
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