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P/N 06160D DCN6409 Teledyne API Model 465M O
3
Monitor Instruction Manual - Page 43
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.
8.2. Changing COM port Hardware
Configuration
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 SW
3 should be OFF.
5. Locate SW2 (DTE-DCE switch) on mainboard.
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.
CAUTION
RISK OF ELECTRICAL SHOCK. THE OPERATIONS
OUTLINED IN THIS SECTION ARE TO BE PERFORMED BY
QUALIFIED MAINTENANCE PERSONNEL ONLY!