Serial Interface; Cl4490 Serial Interface - Laird CL4490 Integration Manual

CL4490 Hardware Integration Guide
Version 1.0
S I
ERIAL NTERFACE
This section details the CL4490's serial interface properties and th

CL4490 Serial Interface


CL4490-PRO Serial Interface

Hardware Flow Control

The CL4490 supports the following protocols, which are separate products:
RS232

RS485

USB

The CL4490-PRO supports the following protocols in one product:
RS232

RS485 (2-wire)

RS485 (4-Wire) and RS422

Laird wireless solutions are not subject to the cabling restrictions for distance. All interfaces are available
when ordering.
CL4490 Serial Interface
RS232
Figure 1: CL4490-RS232
RS232 is a single-ended data transmission protocol. The RS232 signals are represented by voltage levels with
respect to a system common (power/logic ground). The "idle" state (MARK) has the signal level negative with
respect to common, and the "active" state (SPACE) has the signal level positive with respect to common.
Americas: +1-800-492-2320 Option 2
Europe: +44-1628-858-940
Hong Kong: +852-2923-0610
www.lairdtech.com/ramp
8 Laird Technologies