Rockwell Automation 1715-OF8I Redundant I/O System User Manual User Manual

Page 178

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Rockwell Automation Publication 1715-UM001C-EN-P - March 2014

Chapter 5

Configure the Redundant I/O System

10. Click OK.

Step 2: Add a 1715-IB16D Digital Input Module in Simplex Mode

To add a new 1715-IB16D Digital Input module in Simplex mode to the project,

follow these steps.

1. Add the new module, referring to

page173.

2. Select the 1715-IB16D Digital Input module, referring to

page 174

, and

click OK.

Table 32 - Configuration Parameters for Duplex Mode

Parameters

Description

Point

Click the point number to configure parameters for the specified point (0…15).

Enable Change of State

Check which points trigger production of data on Change of State. If the box is checked, Change

of State is enabled for a particular state transition indicated by the column header. If the box is

unchecked, Change of State is disabled.

Enable Change of State appears dimmed only when in Hard Run mode (0…15).

Diagnostics

Choose from the following three pre-selected threshold types for each point:

Full – Thresholds are used that work with the Rockwell Automation preferred end-of-line

devices to support open-wire and short circuit protection and diagnostics.

None – Thresholds are used that are appropriate for use with no end-of-line device. This

option does not support open-wire and short circuit protection and diagnostics.

Custom – You provide the thresholds. The default matches the Full thresholds.

Custom Thresholds

Click Edit to display the Edit Custom Thresholds dialog box and edit thresholds for the selected

point.
When offline or online (including Hard Run mode), the Edit button is enabled when the

Custom diagnostics type is selected for a point and dimmed when the Full or None diagnostic

types are selected. When the Custom diagnostic type is selected, the default matches the Full

thresholds.

Open Wire Detection

Select if the thresholds allow for open wire detection (for example, if the threshold 2 value is

not 0). By default, the header checkbox is selected and all points (0…15) are selected. If the

header checkbox is cleared, all points (0…15) are cleared.
To select open wire detection for a specific point, check the checkbox in the appropriate row for

that point.
To clear open wire detection for a specific point, clear the checkbox in the appropriate row for

that point.

Latch Diagnostics

Select if line fault alarms are latched until reset (including Open Wire Detection and Short

Circuit detection). By default, the header checkbox is selected and all points (0…15) are

selected. If the header checkbox is cleared, all points (0…15) are cleared.

Reset Latch Diagnostics

Click Reset to reset the diagnostic latch serviced.

Enable Change of State for Diagnostic Transitions

Select whether Change of State is enabled when any diagnostic event occurs.

Full And Custom Diagnostics Require Use Of An Appropriate End-of-line Device

Specifies that a custom end device must be used when using full or custom diagnostics.

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