Rs-232 Wiring Example With Handshaking; Rs-232 Basic 3-Wire Example - Campbell SDM-SIO1A Instruction Manual

SDM-SIO1A and SDM-SIO4A Serial Input/Output Modules

6.2.1.4 RS-232 Wiring Example with Handshaking

DTE

6.2.1.5 RS-232 Basic 3-Wire Example

DTE
14
DCE
* Note CTS and RTS are optional if hardware
handshaking is not required. Not connecting the
handshaking lines will reduce the overall current
consumption of the SDM-SIO1A.
DCE