Module Addressing; Output Image-Configuration Words - Allen-Bradley SLC 500 User Manual

4-2 Preliminary Operating Considerations

Module Addressing

SLC 5/0X
Data Files
Slot e
Output Image
Slot e
Input Image
Publication 1746-UM007C-EN-P - July 2004
The following memory map shows you how the output and input
image tables are defined for the thermocouple module.
Thermocouple
Module
Image Table
Output
Scan
Output Image
8 Words
Input
Scan
Input Image
8 Words
(Class 1)

Output Image-Configuration Words

The 8-word, thermocouple module output image (defined as the
output from the CPU to the thermocouple module) contains
information that you configure to define the way a specific channel on
the thermocouple module will work. These words take the place of
configuration DIP switches on the module. Although the
thermocouple output image is eight words long, only output words
0-3 are used to define the operation of the module; output words 4-7
are not used. Each output word configures a single channel.
Example - If you want to configure channel 2 on the thermocouple
module located in slot 4 in the chassis, your address would be O:4.2.
Bit 15
Channel 0 Configuration Word
Channel 1 Configuration Word
Channel 2 Configuration Word
Channel 3 Configuration Word
_
Words 4 7
Output Image
(not defined)
Channel 0 Data Word
Channel 1 Data Word
Input Image Channel 2 Data Word
Channel 3 Data Word
Channel 0 Status Word
Channel 1 Status Word
Channel 2 Status Word
Channel 3 Status Word
Bit 15
File Type
O : 4 . 2
Element
Delimiter
Slot
Bit 0 Address
O:e.0
Word 0
Word 1 O:e.1
O:e.2
Word 2
Word 3 O:e.3
•
•
• •
• •
Word 7
O:e.7
Address
Word 0 I:e.0
Word 1
I:e.1
Word 2 I:e.2
Word 3 I:e.3
Word 4
I:e.4
Word 5 I:e.5
Word 6 I:e.6
Word 7
I:e.7
Bit 0
Word
Word
Delimiter