Appendix E. HC2S3 Digital Communications
E-3
E.3 RS-485 Communications using an MD485 RS-485
Interface
The HC2S3 can be interfaced to a Campbell Scientific datalogger through an
MD485 RS-485 Interface using the Rotronic E2-05XX-MOD RS485 cable as
described below. Settings for the RS485 port on the MD485 must be
configured to match the configuration of the HC2S3, which are 19200 baud,
No Parity, 8 Data Bits, 1 Stop bit, and No Flow Control.
Device Configuration Utility
(Campbell Scientific software available as a free
download) is used to configure the MD485. Configuration settings for the
MD485 are shown below:
MD485 Tab: CS I/O AND RS-485
CS I/O Tab: SDC Address 7
RS485 Tab: RS485 baud 19200
