Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 187)

ASCII Module
PLC-2 Family Processors
Appendix A
AĆ19
EN
BLOCK XFER READ
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE: 050
371
14
252 - 267
DN
037
17
137
17
EN
BLOCK XFER WRITE
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE: 051
371
14
200 - 215
DN
037
16
137
16
Read SW1, SW2
Write CW1, CW2,
initialization words, and data
112
17
EN COUNTER ADDR:
POSITION:
FILE LENGTH:
FILE A :
FILE R :
001
004
570 - 573
202 - 205
DN
FILE TO FILE MOVE
RATE PER SCAN 004
061
061
17
061
15
020
10
Load initialization words,
via switch or on power-up
112
17
020
10
200
17
CW1 initialization bit (module to expect
initialization words), via switch or on power-up
020
02
Initialization: Turns off rung 1 except for
first scan at power-up or via switch
END
A read/write program that you can use to transfer data to and/or from your
ASCII device is presented with rung descriptions (Figure A.8).
Example Read/Write Program