Rockwell Automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Module - Manual (Page 11)

Overview of the Analog Input Module
Chapter 1
1-2
Table 1.A
Program Selectable Input Ranges
Voltage Current
1 to 5V dc 4 to 20mA
0 to 5V dc 0 to 20mA
Ć5 to +5V dc Ć20 to +20mA
Ć10 to +10V dc
0 to 10V dc
The processor transfers data to the module (block transfer write) and from
the module (block transfer read) using BTW and BTR instructions in your
ladder diagram program. These instructions let the processor obtain input
values and status from the module, and let you establish the module’s
mode of operation (Figure 1.1).
1. The processor transfers your configuration data to the module via a
block transfer write instruction.
2. External devices generate analog signals that are transmitted to the
module.
Figure 1.1
Communication Between Processor and Module
PC Processor
I/O Chassis
Backplane
1
3
Input Module
Cat. No. 1771ĆIFE
+
Ć
2
4
5 6
10947ĆI
How Analog Modules
Communicate with
Programmable Controllers