Standard RS232 Cables

RS232 Connections

When connecting two serial devices, different cable types must be used, depending on the characteristics of the serial device and the type of communication used.

Overview of RS232 SUB D9 interconnections

SUB D9 Simple Straight Cable

Area of Application: DTE-DCE Communication where no additional handshake signals are used.

SUB D9 Full Straight Cable

Area of Application: DTE-DCE Communication with hardware flow control using additional handshake signals.

SUB D9 Simple Null Modem Cable without Handshaking

Area of Application: DTE-DTE Communication where no additional handshake signals are used.

SUB D9 Null Modem Cable with Partial Handshaking

Area of Application: DTE-DTE Communication with DTE/DCE compatible hardware flow control. Works also when no handshake signals are used.