Rockwell Automation 1746-NI16V SLC 500 Analog Input Modules User Manual - Manual (Page 11)

1 Publication 1746-UM001A-US-P
Chapter
1
Overview
This chapter describes the 1746-NI16 analog input module and
explains how the SLC 500 processor gathers analog input data from the
module. Included is information about:
•
the module’s hardware and diagnostic features
•
an overview of system operation
General Description The module receives and stores digitally converted analog data into its
image table for retrieval by all fixed and modular SLC 500 processors.
The modules, 1746-NI16V and 1746-NI16I, support connections for up
to 16 voltage or current analog sensors.
The 1746-NI16 is a multi-class (Class 1 or Class 3) single-slot module.
Class 1
(1)
configuration utilizes 8 input words and 8 output words.
Class 3 configuration utilizes 32 input words and 32 output words.
Fixed and SLC 5/01 processors can only operate as Class 1. When the
module is used in a remote I/O chassis with a 1747-ASB, it can only
operate in Class 1 mode. The SLC 5/02, SLC 5/03, SLC 5/04 and
SLC 5/05 processors can be configured for either Class 1 or Class 3.
When the module is used in a remote ControlNet™ chassis with a
1747-ACN(R), it can also operate in either Class 1 or Class 3 mode.
Operate the module in Class 3 mode whenever possible.
The 16 high-impedance input channels can be wired as single-ended
inputs. The module provides a direct interface to the following input
types:
•
±10V dc
•
1 to 5V dc
•
0 to 5V dc
•
0 to 10V dc
•
0 to 20 mA
•
4 to 20 mA
•
± 20 mA
•
0 to 1 mA
(1)
Requires use of block transfer in a remote configuration.