CONNECTOR 3624935 - Caterpillar

Illustration 1 g00669454
CCM/Host equipment Remote Connection with Modems
(1) CCM
(2) CCM RS-232C port
(3) Answering modem
(4) Telephone line
(5) Originating modem
(6) Computer's RS-232C port
(7) Host equipment You should verify the CCM is operating correctly before attempting a remote connection via modem. Verifying correct operation can be accomplished by following the instructions in Operations and Maintenance Manual, SEBU7014, "Initialization for Direct Connection" under the Operation Section in this manual. The user can verify proper operation of the CCM at the location. The user can also become familiar with the CCM. Perform the following procedure in order to initialize communication between the host equipment, the modems, and the CCM. Make sure that the following equipment is available:
A personal computer with a terminal emulator software program Refer to "Caterpillar CCM PC For Windows: Getting Started Manual" for specifications on the PC. The user is responsible for understanding the operation of the PC.
The proper RS-232C cables are required for the particular installation. A RS-232C cable must be temporarily connected from the PC to the Answering Modem. Refer to the Operation and Maintenance Manual, SEBU7014, "RS-232C Cable Requirements" in the Operation Section of this manual.
The two modems must support the Hayes AT command set. This is necessary for both the Answering Modem and the Originating Modem.
The CCM PC For Windows software is optional. The PC software for the CCM is recommended for troubleshooting assistance.Note: Some personal computers will have an internal modem. The internal modem may be used as the Originating Modem. The internal modem must be compatible with the Answering Modem. Consult the instructions for the two modems.Perform the following procedure in order to initialize communication with the CCM and the Answering Modem. The Originating Modem is set up later by the PC software or remote host equipment. The user is responsible for understanding the remote device and modems.Note: In the following steps, the PC and the modems should be turned OFF before you change the cables on the serial ports. When power is reapplied, the modem must be powered up first.
The CCM should be installed with all of the wiring. Refer to the Operations and Maintenance Manual, SEBU7014, "General Wiring Diagram" and "General Specifications for Wire and Cable" in this manual.
Determine the communication parameters for the installation. The default rate of communication (bits per second or bps) is 9600. The remaining default settings from the factory are no parity, 8 data bits, and 1 stop bit. These parameters will work well in most installations. Use the Operation and Maintenance Manual, SEBU7014, "Communication Parameters - Identify" in this manual to determine the parameters of communication that are stored in the CCM. Note: The RS-232C serial port communication baud rate is often referred to as the DTE speed. The phone port communication rate is often referred to as the DCE speed.
Connect the RS-232C port of the Answering Modem directly to the RS-232C port of the PC. This connection is temporary. This connection is required to set up the Answering Modem.
Use the terminal emulator on the PC