Read Input Data - Spectrum Controls 1762sc-IF4OF4 User Manual

Section 3.5
Read Input
Data
Word
General Status I:e.0
Output Status I:e.1
Input Status I:e.2
CJC Temperature I:e.3
Input Channel 4 I:e.4
Data
Input Channel 5 I:e.5
Data
Input Channel 6 I:e.6
Data
Input Channel 7 I:e.7
Data
Chapter 3: Configuring the 1762sc-IF4OF4 for RSLogix 500
The input data file contains module status information and analog input data for
each of the four input channels. Analog input data is read for each channel,
converted to a scaled digital value, and stored in the input file. Use the addressing
scheme below to locate the 8 input words used for channels 0 through 7,
respectively.
1. I/O located on the controller (embedded I/O) is slot 0. I/O added to the
controller (expansion I/O) begins with slot 1.
The layout for the input file is shown below.
Table 3-7 (Input Data File Layout)
Bits
15 14 13 12 11 10
- - - -
- LD3 U3 O3 -
- OC7 U7 O7 -
- = Not used: Bit set to 0.
S<×> = General status bit: If a bit is set (1) then there is an error associated
with that channel (i.e. under/over range).
U<×> = Under range flag bits: Applies to all input/output types.
Inputs:
When set to 1, indicates input signal is below the value in the "Low
Range" column indicated by the table above. However, the module
9 8 7
- - - - S7 S6
LD2 U2 O2 -
OC6 U6 O6 -
16 Bit Word
16 Bit Word
16 Bit Word
16 Bit Word
16 Bit Word
User's Manual Pub. 0300247-01 Rev. D
6 5 4 3 2
S5 S4 S3 S2
LD1 U1 O1 - LD0 U0 O0
OC5 U5 O5 - OC4 U4 O4
3-9
1 0
S1 S0