I-Tech Company CMS 6R4 Series 4.3. Connecting Devices to the RS232 Serial Ports, 4.4. Connecting Control Devices to the CMS-6R4

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CMS-6R4 Series - User’s Guide

4.3. Connecting Devices to the RS232 Serial Ports

The six, serial RS232 Ports on the CMS-6R4 back panel are standard DB9

connectors, conﬁgured as DTE Ports, and are similar to a standard serial port

on a PC. Note that Port 1 is designated as a System Set Up Port, and that in

order to ensure that this port is always accessible by system administrators, the

Supervisor Mode cannot be disabled at Port 1. For a description of the RS232

Port interface, please refer to Appendix A.

Use a DB9 cable to connect the RS232 serial port on your device to the RS232

serial port on the CMS-6R4 back panel. When connecting external modems

and other DCE devices, use a standard serial modem cable. When connecting

PCs and other DTE devices, use a standard null modem cable.

4.4. Connecting Control Devices to the CMS-6R4

The CMS-6R4 can be controlled and conﬁgured via local serial connection, or

controlled remotely via modem or TCP/IP network connection.

4.4.1. Control via Local PC

Use the supplied null modem cable to connect your PC COM port to one of the

CMS-6R4's two RS232 System Setup Ports. The System Setup Ports are male,

RS232C DB9 connectors, wired in a DTE conﬁguration. In the default state,

the Setup Ports are conﬁgured for 9600 bps, no parity, 8 data bits, 1 stop bit.

4.4.2. Control via Modem

Connect your telephone line to the Phone Line port on the CMS-6R4 back

panel. If necessary, conﬁgure the Modem Port as described in Section 5.5.4.

4.4.3. Connecting the Network Cable

The Network Port is an RJ45 Ethernet jack, for connection to a TCP/IP

network. Connect your 10Base-T cable to the Network Port. Note that the

CMS-6R4 includes a default IP address (192.168.168.168) and a default subnet

mask (255.255.255.0.) When installing the CMS-6R4 in a working network

environment, it is recommended to deﬁne network parameters as described in

Section 5.5.2.

Note: The CMS-6R4 features a 10Base-T network interface. When

connecting to a 100Base-T interface, most router switches will

autosense to determine if the device is 100Base-T or 10Base-T,

and then conﬁgure the network interface accordingly. If your

router switch does not autosense, the network interface port must be

manually set to 10Base-T.

This completes the CMS-6R4 installation instructions. Please proceed to the

next Section for instructions regarding unit conﬁguration.