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8. DIGITAL COMMUNICATIONS
8.1.
Digital Communications Overview
The 465M 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.
The APICOM software provided by Teledyne API does not currently
support communications with the 465M. Contact Technical Support
for more information on compatible MODBUS software that can be
8.2.
Changing COM port Hardware
Configuration
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 465M.
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.
06160J DCN7969
NOTE
used with the 465M.
WARNING: Electrical Shock Hazard
Teledyne API Model 465M O
Monitor User Manual
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