Rockwell Automation 57C419 5V-24V DC Input Module - Manual (Page 17)

4Ć1
4.0 PROGRAMMING
This section describes how data is organized in the module and
provides examples of how the module is accessed by the application
software. For more detailed information, refer to the individual
programming language manuals listed in section 1.0.
4.1 Register Organization
The data in the module is organized as four 16 bit registers. The first
two registers (0 and 1) contain the current state (on or off) of the
input data. The software allows you to define the module as a single
long register of 32 bits, two separate registers of 16 bits each, or as
32 separate bits. These two registers are read only. Refer to
figure 4.1.
There are also two registers (2 and 3) used to control the four
latching inputs, which can be programmed as interrupts. The
information in these registers is typically referenced as individual bits.
Refer to figure 4.1.