Campbell Scientific MD485 RS-485 Multidrop Interface User Manual
Page 53

Appendix D. Digital Cellular Modem to MD485 Network
Remote MD485s normally connect to datalogger CS I/O ports via SC12 
cables. Powering up the datalogger will start the MD485 operating. 
Connect the CABLE2TP cable between the RS-485 ports of the base and 
remote MD485s and you are ready to connect to the datalogger. 
D-9
