Rockwell Automation 1746-NI8 SLC 500 Analog Input Modules User Manual - Manual (Page 68)

8–3 Application Examples
Publication 1746Ć6.8 - April 1997
Program Listing
TO BCD
Source
N7:0
0 <
Dest N7:1
0000h <
Scale w/Parameters
Input
I:3.0
0 <
Input Min. 3500
3500 <
Input Max. 20500
20500 <
Scaled Min. 0
0 <
Scaled Max. 100
100 <
Output N7:0
0 <
Rung 2.2
Convert the scaled channel 0 data word
to BCD and write this to the LED display.
If channel 0 is ever disabled, a zero is
written to the display.
TOD
MASKED MOVE
Source
N7:1
0 <
Mask 0FFFh
4095 <
Dest O:2.0
0 <
MVM
➀
SCP
MOVE
Source
N10:0
Dest O:3.0
15
Rung 2.0
First Pass Bit
] [
S:1
Initialize the 1746ĆNI8
Module Channel 0
MOV
Rung 2.1
Rung 2.3
END
➀
The use of the masked move instruction with the 0FFF mask allows you to use outputs 12, 13, 14, and
15 for other output devices in your system. The 7Ćsegment display uses outputs 0-11.
Data File
DATA FILE N10
Offset 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
N10:0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 1