SATEC EM720 Installation Manual - Manual (Page 24)

Chapter 3 Communications 20
Chapter 3 Communications
2. Communications
Computer Connections – RS-232
Figure 24: RS-232 Simple 3-wire Connection , 25-pin or 9-pin PC COM Port
Computer Connections – RS-485
Figure 25: RS-485 Multidrop Connection, 25-pin or 9-pin PC COM Port