Appendix A. CS I/O 9 Pin Serial Port

NOTE The modem’s CS I/O port is not a standard RS232 connection.

A.1 Pin Description

The COM300 modem connects to the datalogger using an SC12 cable connected to the devices’ 9-pin subminiature D-type socket connector. This connector is shown in Figure A-1. Table A-1 shows the I/O pin configuration, and gives a brief description of the function of each pin.

CS I/O

FIGURE A-1. 9 Pin Connector

A-1