Rockwell-automation Logix5000 Controllers Controller Information and S Manual de usuario descargar pdf (Pagina 14)

Chapter 1 Connections

If communication with a module times out, the controller produces the following

warnings.

• The I/O status indicator on the front of the controller flashes green.

• A Warning ( ) icon shows over the I/O configuration folder and over the

device that has timed out.

• A module fault code is produced, which you can access through:

• Module Properties window for the module.

• GSV instruction.

To monitor the health of your connections, use a Get System Value (GSV)

instruction to monitor the Module object for either the controller or a specific

module.

If you want to Get this attribute Data Type Description

Determine if communication

has timed out with any

device

LEDStatus INT

For efficiency, use a

DINT as the

destination data type.

Current state of the I/O status indicator on the front of the controller.

You do not enter an instance name with this attribute. This attribute applies to the entire

collection of modules.

Value Meaning

0 Status Indicator off. No Module objects are configured for the controller

(there are no modules in the I/O Configuration section of the controller

organizer).

1 Flashing red. None of the Module objects are Running.

2 Flashing green. At least one Module object is not Running.

3 Solid green. All the Module objects are Running.

Determine if communication

has timed out with a specific

device

FaultCode INT

For efficiency, use a

DINT as the

destination data type.

A number that identifies a module fault, if one occurs.

In the Instance Name, choose the device whose connection you want to monitor. Make sure

to assign a name to the device in the I/O Configuration folder of the project.

If Module_Status is any value other than 4, the controller is not communicating

with the module. See the following example.

14 Rockwell Automation Publication 1756-PM015F-EN-P – October 2014

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