Rockwell Automation Publication 1715-UM001J-EN-P - December 2020 141
Chapter 5 Using 1715 Analog I/O Module Features
Run Mode
In the Run mode, all channels regulate the output current to the commanded
value for each individual channel. The Ready and Run indicators are GREEN.
You must make sure that all user-required values have been set (by using
RSLogix 5000® or Logix Designer application) before transitioning the module
to Run mode.
If, for any reason, a module does not receive commanded values, then the
module transitions to the Shutdown mode.
Shutdown States
You can configure the channel shutdown states to do one of the following:
• Turn-off/de-energize the channel
• Hold last state
• Regulate the output to a specified value
The shutdown state defaults to turn-off/de-energize.
HART This section discusses The Highway Addressable Remote Transducer (HART®)
communication protocol, which is an open standard owned by the more than
100 member companies in the HART Communication Foundation (HCF).
Products use the HART protocol to provide both analog 4–20 mA and digital
signals. Digital signals are combined with analog signals to provide control
and status data for field devices.
HART is available in revision 3.x and later.
HART Features
The support for HART in the 1715 Redundant I/O System has the following
features:
• HART support on every analog input and output channel
• Variables for each analog input and output channel to monitor HART
device information
Configuration of HART Variables
The Controller tags created when an analog input module (1715-IF16), or analog
output module (1715-OF8I), are added to an application, contain variables to
monitor HART data.
IMPORTANT
If no indicators are lit when module is inserted, the base unit may
not have an incoming power supply, or the module may be faulty.
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