Rockwell Automation AB quality Allen-Bradley 1746-INT4 User Manual page 21

address
N10:0
Ladder Logic to Transfer N10:0 to the Module:
First Pass Bit
S:1
] [
15
SLC 500 Controller
Data Files
Input Image
(8 words)
Address
Word 0
I:1.0 Channel 0 Data Word
I:1.1 Word 1
Channel 1 Data Word
I:1.2 Word 2
Channel 2 Data Word
I:1.3 Word 3
Channel 3 Data Word
• •
Channel 0 Status Word
•
•
Channel 1 Status Word
• •
Channel 2 Status Word
I:1.7 Word 7
Channel 3 Status Word
Data Table Display of Integer File N10:0
15 data 0
0000 1000 0000 0000
COP
COPY FILE
Source # N10:0
Dest # O:1.0
Length
8. Write ladder logic to process the thermocouple input data for
your application.
Output Image
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
(Variable Thermocouple Input Data)
Bit 15
In this example, the module is located in slot 1.
9. Apply power, download your program to the SLC processor and
put the controller into Run mode.
In this example, during a normal start up, the module status LED
indicator and channel status 0 LED indicator turn on.
INPUT
ISOLATED
0 2
Channel LED Indicator
CHANNEL
STATUS
1 3
Module Status LED Indicator
MODULE STATUS
THERMOCOUPLE/mV
address 15 data
When cycling power, the first pass bit
(S:1/15) is set for one scan, enabling the
COPY instruction to transfer the
configuration word to the processor's
output image table. From there it is
transferred to the module in the
processor's I/O scan.
1
Address
I:1.0
Bit 0
Publication 1746-UM614B-EN-P - September 2007
Quick Start 21
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