CTI 2572-A, Installation And Operation Manual

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CTI 2572-A Installation and Operation Guide V1.3 3
Enhanced Startup Options
The 2572-A provides three startup options to meet almost any customer requirement. See CHAPTER
2. INSTALLATION , for a discussion of the advantages and disadvantages of each approach.
•
AutoStart from EEPROM – The module automatically starts up using configuration parameters
stored in EEPROM.
•
PLC Start – PLC logic is used to set the network parameters and start the module.
•
DHCP (Dynamic Host Configuration Protocol) Start -This is a new method provided by this
module. The module obtains its network parameters from a network DHCP server during startup.
Once configured, the DHCP server automatically assigns IP parameters to the module based on
the position of the 2572-A Module ID switches.
Enhanced Diagnostics
The 2572-A provides a complete set of diagnostic data that can be accessed via a standard web
browser. Diagnostic objects are provided for the module hardware, Ethernet interface, PLC Interface,
TCP/IP stack, and all protocol managers. In addition, the module maintains an internal log of
significant events. The log entries are maintained in non-volatile RAM, allowing the log to survive
re-cycling of power. If desired, the log entries may also be logged to disk by using a PC running
SYSLOG server software.
Enhanced Security
The 2572-A module adds password protection to certain module functions. If a valid password is not
entered, the module will prohibit the user from changing the configuration or downloading new
firmware to the module via the network. In addition, Configuration Lock and Download Lock
switches can be set to prohibit anyone from changing the module configuration changes or
downloading firmware via the network.
1.3. Functional Overview
The 2572-A can operate as both a server and a client. As a server, the module responds to messages
sent by a network client, such as a PC running HMI software. As a client, the module initiates
messages on command from the PLC to a server, such as another 2572-A module.
Server Function
P
L
C
2
5
7
2
A
1) Command Message
Server PLC / 2572-A
Client Node
2) PLC Command
3) PLC Response
4) Response Message
Figure 2. PLC Server Function
The 2572-A can function as a server to clients who wish to access the PLC.