RLX-IFHE ♦ RadioLinx Industrial Wireless Installing the Radios
RadioLinx® Industrial Frequency Hopping Ethernet Radios User Manual
ProSoft Technology, Inc. Page 61 of 109
November 19, 2013
Communication signals diminish in strength as they travel through cable. The
maximum cable lengths for RS-232 are less than RS-485 because the RS-232
interface is more susceptible to noise. The data performance of RS-232 and RS-
485 is similar as long as the cable requirements are met. The following table
gives an estimation of the cable length requirements for the two serial interface
protocols:
There are different ways to transfer data serially; simplex, half-duplex, and full-
duplex. Simplex communication mode allows transmission of data in one
direction only. In the half-duplex mode, data can be transferred in both
directions, but not simultaneously. That means data can be transferred over a
single pair of wires, but the data can only be transferred in one direction at a
time. Full-duplex mode utilizes two pairs of wires and the data can be
transferred in both directions simultaneously.
Radio RS-485 Cable Specification
