Plc-3 family processors – Rockwell Automation 1771-IR , D17716.5.76 RTD INPUT MODULE User Manual

Page 49

Programming Examples

Appendix B

BĆ3

Following is a sample procedure for entering data in the configuration words of
the write block transfer instruction when using a PLC–3 processor. For a
complete sample program, refer to Figure 4.2.

To enter data in the configuration words, follow these steps:

Example:
Enter the following rung for a write block transfer:

BTW
RACK:
GROUP:
MODULE
DATA:

001

1 = HIGH

F0003:0000

LENGTH: 14

CNTL: FB004:0000

BLOCK XFER WRITE

CNTL

Power Up Bit

F0003:0000 is the address of the write block transfer data file. You want to
enter/examine word 1.

1. Press [SHIFT][MODE] to display your ladder diagram on the industrial

terminal.

2. Press DD,03:0[ENTER] to display the block transfer write file.

The industrial terminal screen should look like Figure B.2. Notice the
highlighted block of zeroes. This highlighted block is the cursor. It should be in
the same place as it appears in figure B.2. If it is not, you can move it to the
desired position with the cursor control keys. Once you have the highlighted
cursor in the right place, you can go on to step 3.

PLC-3 Family Processors