CTI 2572-B / 2500C-2572-B Installation and Operation Manual 3
CHAPTER 2. INSTALLATION
The installation of the Model 2572-B Ethernet TCP/IP Adapter Module consists of the following steps:
1) Planning the installation,
2) Unpacking and configuring the module,
3) Physical installation,
4) Setting IP information,
5) Connecting cables,
6) Checking the module operation.
2.1. Installation Planning
Choosing Ethernet Media
The 2572-B module attaches directly to 10BaseT or 100Base TX media (Shielded or Unshielded Twisted Pair)
via the RJ-45 connector. Ensure that the cables you use for Ethernet communications meet the appropriate
IEEE 802.3 specifications and are appropriate for the environment in which you are operating. CTI
recommends you use cables rated Category 5e or better.
Selecting an IP Address and Other Network Parameters
Before proceeding, you must determine what IP address you will assign to the module, the subnet mask to
use, and the IP address of the default gateway/router. If you are connecting to an existing network, your
network administrator should provide this information. If you are installing a stand-alone network, you should
choose from within the set of “private” IP addresses specified in RFC 1597. See APPENDIX D. IP ADDRESS
INFORMATION for a description of the IP Address numbering conventions.
Choosing a Module Startup Method
Before the 2572-B will communicate using TCP/IP, the IP address and related parameters must be set and the
module network server must be started. There are two startup options, described below.
AutoStart
If you choose this method, the module will automatically start the network server using IP parameters stored
in flash memory. The primary advantage of this approach is that it eliminates the need for additional PLC logic
to initiate startup. See Section 2.8. Storing Network Parameters in Flash.
The disadvantage of this method is that, when installing or replacing modules, you must manually configure
the IP parameters of the replacement module. In addition, if you arbitrarily swap 2572-B modules between
PLCs, the IP address will move with the module. The effect of inadvertently swapping IP addresses could
cause process problems, since communications directed at one PLC would actually be going to another PLC.
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