Eaton Electrical D77A Communication Hints, Status LED Description Explanation, Problem Solution

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Intelligent Technologies (IT.) D77A I/O Module Products

Table 31: Status LED

Status LED

Description

Explanation

 

 

 

 

 

 

Mostly Off

Offline

Everything is OK with in the I/O Module and the I/O Module is not being scanned.

 

 

Check that the Network Adapter is commanded to scan QCPort. This is generally done by setting bit 0 of byte

 

 

0, for channel A, in the output assembly.

 

 

 

Mostly On

Online

Everything is OK with in the I/O Module and the I/O Module is being scanned.

 

 

 

50%

Faulted

Internal memory fault (cycle power).

 

 

Verify that there are not any duplicate Group ID’s (address). Check that the address is unique for the QCPort

 

 

system.

 

 

The Group ID was changed and a reset is required.

 

 

Buss fault. All the devices on the QCPort will have the same status LED behavior. A buss fault is caused by an

 

 

open or QCPort shorted buss.

 

 

 

Rapid Flash

Unacquired

The I/O Module has not been discovered/acquired by the Network Adapter, verify that the node ID is set

 

 

correctly for the system.

 

 

The Network Adapter has not auto configured the QCPort system. In this case all the I/O Module’s will have

 

 

the same behavior of the status LED. Perform an auto configuration.

 

 

CH Studio is identifying that device. When the device is highlighted in CH Studio this is a way to identify in

 

 

the field which device is being highlighted. Remove the highlight from CH Studio and verify that the Rapid

 

 

Flash disappears.

 

 

 

Solid On

 

It is possible the I/O Module is in firmware download mode, cycle power to exit that mode. If the LED stays

 

 

solid On after the power cycle, it is possible that the I/O Module has in internal failure and will need to be

 

 

replaced.

 

 

 

Off

No Power

The I/O Module is not powered or a memory fault in NV RAM has occurred that will require the I/O Module to

 

 

be replaced.

 

 

 

Communication Hints

Table 32: Communication Hints

Problem

Solution

 

 

 

 

 

 

 

Are all the QCPort devices

Check the Network Adapter, is the ST LED Green? – If the LED is green, then perform an auto configuration of

 

connected to one Network

the Network Adapter and see if the problem goes away.

 

Gateway are not

 

 

There may be a damaged I/O Module or a shorted QCPort communication wire that is prohibiting QCPort

 

communicating? Are all the

 

communications. Remove all the I/O Modules from the QCPort system.

 

Status LED’s either Rapid

 

Flash or 50% On

Unplug the Network Adapter from the industrial network.

 

 

 

 

Cycle power to the Network Adapter.

 

 

One by one plug the I/O Modules back in and verify that the status LED is mostly off as they are plugged back in.

 

When the I/O Module the causes the system to fail is plugged in, the I/O Module’s status LED will rapid flash or

 

50% flash only.

 

 

Remove the I/O Module and check the QCPort connections for shorted or damaged wires or connections.

 

 

When all the I/O Modules are online, plug the Network Adapter into the industrial Network.

 

 

 

 

 

It is possible that the terminating resistors are damaged, replace the terminating resistors.

 

 

 

 

Is there a single I/O Module

The problem may be that the I/O Module has a fixable internal communication failure. Perform a reset by

 

in the system that is not

toggling the rotary switch from 0 to 1 five times, reset the rotary switch to the correct group ID (address).

 

communicating?

 

 

It is also possible the Group ID rotary switch was changed after auto configuration. Check the rotary switch and

 

 

verify that they are in the correct position for that address. Physically move the rotary switch from one position

 

to another to verify that it is in the correct position (there will be a “snap” when it reaches the next state).

 

 

Unplug and replug the device and check that the problem disappears.

 

 

 

 

 

It is possible that the communication connections are damaged or unplugged.

 

 

 

 

 

It is possible that the terminating resistors are damaged, replace the terminating resistors.

 

 

 

 

During auto configuration

Check the status LEDs on the I/O Module units, if the LEDs are rapid flashing or 50% On refer to the above

 

the Network Adapter will not

problem for a solution.

 

detect any of the I/O

 

 

If the status LEDs on the I/O Module units are all slow flashing, the Network Adapter has already connected to

Modules.

the I/O Module units and the problem is that the CH Studio software is not displaying the I/O Module units. This

 

 

can be because the scanner is not allowing CH Studio to send long messages.

 

 

 

 

 

The Network Adapter cannot perform an auto configuration if the system controller is scanning the Network

 

 

Adapter. Disconnect the Network Adapter from the industrial network and reattempt the auto configuration.

 

 

 

 

 

 

 

MN05002001E

For more information visit: www.EatonElectrical.com

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Contents D77A-AI8D77A-AI8AQ8 Intelligent Technologies IT D77A I/O Module ProductsPage Important Notice Please Read Table of Contents List of Tables List of FiguresPage Definitions and Symbols SafetyHazardous High Voltage Avis Aviso General SafetyDiscrete Output Modules IntroductionAll Modules Discrete Input ModulesApproval Certifications Discrete Combination ModulesAnalog Input Modules Analog Output ModulesCatalog Numbering System D77A a Q 16Physical Description SpecificationsPower Requirements Dimensional DataSurge Suppression Bit Byte Environmental SpecificationsDevice Default I/O Data Category Description SpecificationVoltage Part Number Module SummaryType I/O Description AC Input Module Specifications Input SpecificationsCatalog Number D77A-AI8 D77A-AI16 Catalog Number D77A-DI8 D77A-DI16 DC Input Module SpecificationsD77A-NI4 Catalog Number Voltage Input Current Loop Input Analog Input Module SpecificationsSee D77A-NI4 Analog Input Module Specifications on Bit Resolution Equations AC Output Module Specifications Output SpecificationsCatalog Number D77A-AQ8 D77A-AQ16 Catalog Number D77A-DQ8 D77A-DQ16 DC Output Module SpecificationsCatalog Number D77A-RQ8 D77A-RQ16 Relay Output Module SpecificationsD77A-NI4 Catalog Number Voltage Output Current Loop Output Analog Output Module SpecificationsAnalog Output Curves for 14 Bit Resolution Combination Module Specifications Special I/O SpecificationsCatalog Number DC Sink/Source Input DC Mosfet Sink Output Catalog Number DC Sink/Source Input Relay Output D77A-DI8RQ8Catalog Number AC Input AC Output D77A-AI8AQ8Catalog Number AC Input Relay Output D77A-AI8RQ8Theory of Operation Out-of-box Default OperationTypical Application Discrete Input Module Operation FunctionDiscrete Combination Module Operation ADC CPU Filter Setting Total Update TimeCPU DAC Setting Group ID InstallationModule Preparation Installation Without BackplaneInstalling the Module Installation With Backplane Do not rock the module onto the DIN rail Interconnects/Connections QCPort ConnectionsPre-manufactured QCPort Interconnect Cables O Property ConfigurationSymbol Definition Field WiringMOV AC Inputs AC Input WiringDC Inputs DC Input WiringAnalog Inputs Analog Input WiringAC Outputs AC Output WiringDC Outputs DC Output WiringRelay Outputs Relay Output WiringAnalog Outputs Analog Output WiringCombination I/O Combination I/O WiringState LED Behavior Troubleshooting and MaintenanceFault Codes Status LEDExplanation of LED Duty Cycle States TroubleshootingCommunication Troubleshooting Hints Renewal PartsCommunication Hints Problem SolutionStatus LED Description Explanation Byte Bit Appendix aData Parameters Size DescriptionSign Bit = True = False + Mode Description Active/Passive Configuration Parameters0x8006 32774 Slave Address Timer will not decrement Publication Description IT. Publications and SupportAnalog Data Registers PublicationsCompany Information
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