Cypress CTM-130 manual Industrial Monitoring Operation

9.7 Industrial Monitoring Operation

The advanced communication capabilities of the CTM-130/132 modem are designed for enabling communications with remote industrial sites. These sites often operate equipment utilizing industrial communication protocols such as MODBUS RTU. The CTM-130/132 modem supports the MODBUS protocol and can be configured for either slave or master connection. In master connection the modem performs MODBUS ID to IP mapping.

Chameleon Modem MODBUS Slaves

Chameleon Modem

MODBUS Master

Base Station Base Station

MODBUS RTU or ASCII

MODBUS Slave devices

CDMA Netw ork

Request

UDP encapsulated
MODBUS RTU
messages	Response

MODBUS ID to IP address map

MODBUS RTU

MODBUS Master Application

For other industrial protocols the PAD communication features of the modem can be configured to enable these to be implemented over the CDMA network.

Chameleon Modem

Base Station

CDMA Netw ork

Request

UDP encapsulated messages

Response

Remote Application #1

Internet or Private Netw ork Group

Local Application

© 2007 Cypress Solutions Installation and Operation Manual: CTM-130 / CTM-132 (Revision 1.2) Page - 33 -