Teledyne 465M Digital Communications Overview, Changing COM port Hardware Configuration

8. DIGITAL COMMUNICATIONS

8.1.Digital Communications Overview

The M465M comes equipped with a digital communications (Com) port that can be connected to a computer or digital data acquisition system. This COM port uses the standardized MODBUS protocol and can be configured for RS232, RS485, or Ethernet (10 Mbit,) allowing for connections to a wide variety of devices and networks. See Section 8.2 for more information on configuring the COM port.

The COM port can be used for data acquisition, alarm triggering, and instrument configuration. All the functions that are available at the front panel of the instrument can also be performed over the COM port.

NOTE

The APICOM software provided by Teledyne API does not currently support communications with the M465M. Contact T-API for more information on compatible MODBUS software that can be used with the M465M.

8.2.Changing COM port Hardware Configuration

CAUTION

RISK OF ELECTRICAL SHOCK. THE OPERATIONS

OUTLINED IN THIS SECTION ARE TO BE PERFORMED BY

QUALIFIED MAINTENANCE PERSONNEL ONLY!

The COM port can be configured for RS232, RS485, or Ethernet. To change the COM port hardware configuration, perform the following steps:

1.Disconnect power from the M465M.

2.Remove the six screws and the top cover.

3.Locate the DIP switches labeled SW3 on the rear portion of the mainboard.

4.Turn ON the switches specified for the desired COM configuration (See Figure 8-1.) All other switches on SW3 should be OFF.

5.Locate SW2 (DTE-DCE switch) on mainboard.

P/N 06160D DCN6409 Teledyne API Model 465M O3 Monitor Instruction Manual - Page 43