IEC 61850 GGIO Exp Module

The IEC 61850 GGIO Expansion I/O Module represents the GGIO_Exp Logical Node in the IEC 61850 protocol.

Module icon

Overview

It maps the appropriate ION values to the IEC 61850 counterparts. The GGIO_Exp Logical Node provides status information for your device’s expansion digital and analog inputs and outputs, depending on the physical input/output expansion option on your meter. This module allows IEC 61850 control of the outputs. Because this module is specific to supporting the IEC 61850 protocol, you can delete it if IEC 61850 is not required.

NOTE: This module is configured as part of the meter’s implementation of the IEC 61850 protocol and modifications should only be undertaken by personnel with a thorough understanding of ION and IEC 61850 protocols, and the system in which the meter is installed.

For more information about IEC 61850, please refer to the IEC 61850 and ION Technology protocol document.

NOTE: The registers and settings available in this module depend on the device or node you are configuring, as well as its firmware and template versions. Not all registers or settings are available on all devices or the Virtual Processor, and labels may vary.

Inputs

The GGIO Expansion I/O Module inputs are designed to be connected to the outputs of the Analog Input and Digital Input modules, depending on the physical I/O expansion option of the meter and the Control Mode setup register settings. Only the registers corresponding to the physical I/O are valid for configuration.

NOTE: Use the IEC 61850 CID file that matches your meter’s I/O expansion option.

Analog Input 1...Analog Input N

These registers are connected to the ScaledValu output register of the Analog Input module, which reflects the scaled version of the analog input value.

Digital Output 1...Digital Output N (Digital Output Status 1 ... Digital Output Status N)

These registers must be connected to the State outputs of the Digital Output modules for the meter’s expansion digital outputs if the corresponding Control Mode setup register is set to ion input.

NOTE: These registers must not be connected if the corresponding Control Mode setup register is set to iec 61850 ctlval. Refer to “Detailed Module Operation” for more information.

Digital Input 1...Digital Input N

These registers are connected to the State outputs of the Digital Input modules, which reflect the current state of the Digital Input module’s Source input.

Setup registers

SPCS01 Control Mode...SPCS0N Control Mode

These registers determine the source of the associated SPCS0.stVal output register value as follows:

• If Control Mode is set to ion input, the corresponding SPCS0.stVal register value is taken from the Digital Output / Digital Output Status input register.
• If Control Mode is set to iec 61850 ctlval, the corresponding SPCS0.stVal output register value is taken from IEC 61850.

Refer to “Detailed Module Operation” for more information.

Output registers

These registers are formatted and named according to IEC 61850 protocol standards.

AnIn1.instMag...AnInN.instMag

These registers contain the instantaneous value of the analog inputs, and are taken from the Analog Input 1 - N inputs.

AnIn1.mag...AnInN.mag

These registers contain the deadbanded value of the analog inputs, taken from IEC 61850 and from the Analog Input 1 - N input registers.

ISCS01.stVal...ISCS0N.stVal

These registers are the value of the analog outputs, taken from IEC 61850. Refer to “Detailed Module Operation” for more information.

Ind1.stVal...IndN.stVal

These registers are the status of the digital inputs, taken from the Digital Input 1-N input registers.

SCPS01.stVal...SPCS0N.stVal

These registers are the status of the digital outputs, either taken from the Digital Output / Digital Output Status input register or from IEC 61850, depending on the corresponding Control Mode setup register value.

Event

Events produced by the module are recorded in the Event register.

Possible events and their associated priority numbers are shown in the following table.

Event priority group	Priority	Description
Reset	5	A module reset has occurred.
Setup Change	10	Input links, setup registers or labels have changed.
Information	25	not available input caused output to go not available.

The Event output register stores the following information for each ION event: time stamp, priority, cause, effect, and any values or conditions associated with the cause and effect.

Detailed module operation

The GGIO Expansion I/O module allows IEC 61850 to control the meter expansion’s Digital Output and Analog Output Modules. It also allows IEC 61850 to read the status of the expansion’s Analog Input and Digital Input Modules, and (depending on the SPCS0 Control Mode setup register value) read the status of the Digital Output Modules.

Analog Output and Digital Output Module control through IEC 61850

Your device’s digital and analog outputs may change state when being configured, during an option module reset or power cycle, or during a firmware or framework upgrade.

Analog Output Module control

For IEC 61850 control of the Analog Output Mmodule, the associated IEC 61850 control attribute (ctlval) is taken from IEC 61850 and written to the corresponding ISCSO.stVal output register. The ISCSO.stVal output register is connected to the Source input register on the Analog Output Module, which controls the state of the meter’s analog output.

Digital Output Module control

If the SPCSO Control Mode setup register is set to iec 61850 ctlval, the associated IEC 61850 control attribute (ctlVal) is taken from IEC 61850 and written to the corresponding SPCSO.stVal output register. The SPCSO.stVal output register is connected to the Source input register on the Digital Output Module, which controls the state of the meter’s digital output. The associated Digital Output / Digital Output Status input on the IEC 61850 GGIO Exp module must not be linked, or else the module will not go online.