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

6.2.1.4 RS-232 Wiring Example with Handshaking

DTE
* 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.

6.2.1.5 RS-232 Basic 3-Wire Example

DTE
SDM-SIO1A Serial Input/Output Module
DCE
DCE
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