Cisco Catalyst IR1821 Installation Guide

Figure 5: Pinouts
Table 8: Serial Port Characteristics
RS485 Half DuplexRS485 Full DuplexRS232
DIRSignalDIRSignalS1 (DCE)S0 (DTE)Abbr.Signal DescriptionPin #
<->TX/RX+OutputTX-OutputInputDSR/RIDCE ready; used as DSR in Cisco
IOS
1
<->TX/RX-OutputTX+OutputInputDCDReceived Line Signal Detector2
——InputRX-InputOutputDTRDTE Ready3
—COM—COM——COMSignal Ground4
————OutputInputRxDReceived Data5
——InputRX+InputOutputTxDTransmitted Data6
————OutputInputCTSClear To Send7
————InputOutputRTSRequest To Send8
USB Ports
A single USB port with a Type-A connector is present on the front panel. The port is USB 2.0 only, and can be
used for USB sticks. We recommend that you do not use this in a hazardous location without mechanical
constraint. All front panel USB ports are equipped with a screw hole for mechanical constraint. The USB port
can provide a maximum current of 500mA at 5V.
A single USB port (micro-B) is provided for console access on the front panel. If your laptop or PC displays a
message that you do not have the proper drivers to communicate with the IR1800, you can obtain them from
your computer manufacturer.
If you are connecting to the USB port, note the following points:
• A connection to the USB port can only be made in a nonhazardous environment.
• The USB port cover must be reinstalled before the router can be deployed in a hazardous environment.
Caution
Cisco Catalyst IR1800 Rugged Series Router Hardware Installation Guide
23
Product Overview
USB Ports

Cisco Catalyst IR1821 Specifications

General

Brand	Cisco
Model	Catalyst IR1821
Category	Network Router
Language	English