Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 137
Chapter 5 Using 1715 Analog I/O Module Features
1715-OF8I Analog Output Module
The analog output interface consists of analog output modules and output
termination assemblies. Each module provides eight isolated output channels
and plugs into the I/O base unit and a corresponding termination assembly.
Termination assemblies provide termination for eight output channels and
the coding pegs make sure they mate only with an analog output module. Field
connections are connected to the terminal block connectors on the
termination assembly.
The analog module provides 4…20 mA output current from each channel for
field devices.
The 1715-OF8I analog output module features are as follows:
• Flexible module structure for a user configurable system
• Supports eight field devices
• Secure communication between modules for fault tolerant operation
• Operates as a simplex or duplex configuration
• Two-terminal current regulating device
Features Common to All
Analog I/O Modules
The features that are common to all 1715 and ControlLogix® analog I/O
modules are listed in Table 21
. The features are described later in this section.
Removal and Insertion Under Power (RIUP)
All 1715 I/O modules can be inserted and removed from the chassis while power
is applied. This feature allows greater availability of the overall control system
Table 20 - Performance Criteria for the Analog Output Module
Attribute Value
Data Input value least significant bit (control) 0.98 µA
Data Output value least significant bit (monitor) 3.9 µA
Channel Measurement Error at 25 °C (77 °F) ± 2 °C (±3.6 °F)
After 1 year at 40 °C (104 °F)
After 2 years at 40 °C (104 °F)
After 5 years at 40 °C (104 °F)
0.30% + 10 µA
0.35% + 10 µA
0.44% +10 µA
Temperature drift (0.01% + 0.1 µA) per °C
ATTENTION: Maintenance must be performed only by qualified
personnel, otherwise, personal injury or death, or damage to the system
can result.
Table 21 - Common Analog I/O Module Features
Feature Page
Removal and Insertion Under Power (RIUP) 137
Module Fault Reporting 138
Fully Software Configurable 138
Status Indicator Information 138
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