Installation manual

Publication 1747-RM001G-EN-P - November 2008
1-2 Processor Files
Output and Input Data Files (Files O0: and I1:)
Data Files 0 and 1 represent external outputs and inputs, respectively. Bits in
file 1 are used to represent external inputs. In most cases, a single 16-bit word
in these files will correspond to a slot location in your controller, with bit
numbers corresponding to input or output terminal numbers. Unused bits of
the word are not available for use.
Table 1.1 explains the addressing format for outputs and inputs. Note that the
format specifies e as the slot number and s as the word number. When
referencing output and input data file words, refer to the element as e.s (slot
and word), taken together.
Table 1.1 Output and Input Data File Addressing Formats
Format Explanation
O:e.s/b
I:e.s/b
O Output
I Input
: Element delimiter
e Slot number (decimal) Slot 0, adjacent to the power supply in the first chassis, applies to the
processor module (CPU). Succeeding slots are I/O slots, numbered from 1
to a maximum of 30.
. Word delimiter. Required only if a word number is necessary as noted below.
s Word number Required if the number of inputs or outputs exceeds 16 for the slot.
Range: 0-255 (range accommodates multi-word “specialty cards”)
/ Bit delimiter
b Terminal number Inputs: 0-15
Outputs: 0-15
Examples:
O:3/15
O:5/0
O:10/11
I:7/8
I:2.1/3
Output 15, slot3
Output 0, slot 5
Output 11, slot 10
Input 8, slot 7
Input 3, slot 2, word 1
O:5
O:5.1
I:8
Output word 0, slot 5
Output word 1, slot 5
Input word 0, slot 8
Default Values: Your programming device will display an address more formally. For example, when you assign the address O:5/0, the
programming device will show it as O:5.0/0 (Output file, slot 5, word 0, terminal 0).