Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual - Manual (Page 55)

Data Table
Chapter 3
3Ć28
Figure 3.12
Example of Sequencer Table Bit Assignments
SEQUENCERą
COUNTER ADDR:ą FILE to SEQ LENGTH
WORD ADDR:ą
MASK ADDR:ą
MASK
STEP
17 10 07 00
FROM ADDR
TO ADDR
17 10 07 00 17 10 07 00 17 10 07 00
WORD #1 WORD #2 WORD #3 WORD #4
D
E
V
I
C
E
N
A
M
E
1 0 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 1 0 1 0 1 0
0 0 1 0 1 0 0 0 1 0 0 1 0 0 1 0 1 0 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 1 0 1 0 1 0 1 0
A B F 8 E A 4 C A 3 D 9
3 C 4 D 2 8 1 2 B 5 F 4
1 D C 1 3 4 D 2
C FF 2 6 5 E C H 1 2 7 F
C D 4 6 1
4 7 D 2 3 9 B 1 A B C 6
B 3 F 8 2 3 F E 1 C 2 A
400 410 420
407 417 427
1
2
3
4
6
7
A
/ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 0 0 0 0
Input
204 400 427
112 113 114
403 431 432
1
Once the rough sketch of the application is complete, the programmer can
assign data table bit addresses to the input and output devices wired to the
controller. The 5-digit bit address directly corresponds to the location of
each I/O device with respect to the rack number, I/O group and terminal
number. Because the bit address is hardware-related, the programmer
cannot arbitrarily assign bit addresses to I/O devices. Refer to Section
3.2 on memory organization. Analog modules and other intelligent I/O
modules use word addresses rather than 5-digit bit addresses. Refer to the
user’s manual for each module for more information on addressing and
wiring.
The installer and programmer of the PLC-2/30 Programmable Controller
should work together to determine the best placement of the I/O modules
within the I/O chassis. To simplify installation and troubleshooting
procedures, it may be desirable to group like modules together. It is also
helpful to document I/O assignments on a form such as the form presented
at the end of this section. Recommendations for I/O wiring and module
3.4.6
I/O Assignments