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CTI 2572 Installation and Operation Guide
18
Checking PLC Login
Next, log the module into the PLC I/O configuration. The 2572 logs in as a special function module
with 2 WX and 6 WY words. To configure the PLC I/O refer to your PLC programming software
manual. In the example below, the 2572 module is installed into slot 1 on I/O base 0 and will be
logged in starting at address 1. Your configuration may differ.
I/O MODULE DEFINITION FOR CHANNEL . . . 1 BASE . . . . . . .
00
I/O NUMBER OF BIT AND WORD I/O SPECIAL
SLOT ADDRESS X Y WX WY FUNCTION
01 00001 00 00 02 06 YES
02 00000 00 00 00 00 NO
.. ...... .. .. .. .. ...
15 00000 00 00 00 00 NO
16 00000 00 00 00 00 NO
Figure 11. Sample I/O Configuration
After you read the I/O base, if the number of WX and WY words are the same as those shown in the
example above and Special function = YES, then the PLC can recognize the module. Change the
address as required by your application and save the result. If the line is blank or erroneous, re-check
the module to ensure that it is firmly seated in the I/O base slot. Generate the PLC I/O configuration
chart again by reading the I/O base. If the problem persists, contact your distributor or contact CTI.
NOTE:
If you do not log the module in correctly, it will not function properly.