Filter
Top Products
CTI 2572 Installation and Operation Guide
19
2.6. Using PLC Logic to Start the Network Server
The Start Network Server command is used when you want to establish the network parameters using
PLC logic. When you use PLC logic to set the network parameters, you can ensure that the IP
address is directly associated with the PLC and not the module.
NOTE:
Before you can use PLC logic to start up the PLC network server function, the Network Startup
Option switch must be set to PLC Start (See Figure 10. Switchblock 2 on page 15).
The 2572 uses the PLC V memory to store command information and the module WX/WY words to
control execution of the commands. If you are not familiar with this interface, please refer to
Appendix D of this manual. Also see the ladder logic example on page 24.
NOTE:
If you store the network parameters in EEPROM and use the module AUTOSTART switch option, you
are not required to execute this command.
The network data parameters are set by the PLC when the Start Network Server command block is
executed. This block is shown on the following page. In the illustration, a bold entry is a required
value. A non-bold entry is a recommended value that you should use unless you have reason to do
otherwise. Values for the command block entries are shown in both hexadecimal and decimal
(integer) format. Using your PLC programming software, you can configure a chart to display the
values either way.
This command should be executed only when the Network Configuration Required bit (NET CFG) is
set. The N
ET CFG bit is set shortly after power is first applied to the module or after the module is
reset for any reason. It remains on until the network parameters have been set. If you have chosen
the PLC Start option for network startup, you must successfully complete this command before the
2572 will respond to any other network commands. See the ladder example on page 24.
NOTE:
When you trigger the Start Network Server command, if the command block contains invalid data,
the 2572 will return an error code and then halt. To recover, you must correct the command block
entry and reset the module by cycling power.