CTI 2554-A - 4-Channel Isolated High-speed Counter Module

TCP/IP Overview

The CTI 2572 module uses TCP/IP (Transmission Control Protocol/Internet Protocol) to transport

messages between the module and other nodes on the network.  TCP/IP is a suite of protocols that

provide routing and delivery services for messages between application programs running on

different processors (called hosts in TCP/IP terminology).  You may select between connectionless

(packet based) or connection-oriented (stream based) delivery services.

TCP/IP uses a standard structure known as a socket, for the application program interface. The de

facto socket standard is the Berkeley Socket, named for the University of California at Berkeley, who

originally distributed TCP/IP.  Originally, the Berkeley Sockets were used with only the Unix

operating system. Today, Microsoft Windows includes TCP/IP support using the Winsock standard, a

derivative of the Berkley Socket standard.

Summary

The TCP/IP protocol is used to send and receive messages via the network. It will function over the

local Ethernet network or over Wide Area Networks. TCP/IP supports both connectionless (UDP) and

connection oriented (TCP) services. UDP is usually sufficient for most applications because the

higher-level application protocol (CAMP) incorporates an acknowledgment to commands.  TCP/IP

network software for an IBM compatible personal computer is readily available from a wide range of

sources.  For a complete discussion of the TCP/IP protocol, see Internetworking with TCP/IP by

Douglas Comer (1991. Prentice Hall) or other commonly available reference material.

Getting Started

If you are not familiar with the 2500P-ECC1 Communications Coprocessor module, you should read the

remainder of this chapter and CHAPTER 2. which describes the communications protocols supported by the

ECC1 module.

CTI 2595 - 16-point TTL/Word Output Module

CTI 2596-8 - 8-point 11-125 VDC Output Module

CTI 2597-8/16/32-point 11-125 VDC Output Module

CTI 2598-8 - 8-point 11-240 VAC Output Module

CTI 2599-8/16/32-point 11-240 VAC Output Module

CTI 2530-8-point Form-C Relay Output Module

CTI 2532-16-point Form-A Relay Output Module

CTI 2534-8-point Form-C Relay Output Module

CTI 2501 - 8in/4Out Analog Module

CTI 2550-A - 8-Channel Isolated Analog Input Module

CTI 2555-A - 16-Channel Analog Input Module

CTI 2558 - 8-Channel Analog Input Module

CTI 2560-A - 8-Channel Isolated Analog Output Module

CTI 2551-A - 8-Channel Isolated Thermocouple Input Module

CTI 2552-A - 8-Channel Isolated RTD Input Module