Hubs require the OPI feature to be licensed to your emx account. Contact Packet Power if you do not already have this feature licensed to your account.

Once the OPI feature has been licensed for your EMX account go to emx.packetpower.com and access the Open Power Interface (OPI) menu under the Manage tab to program the Hub. 

Reference the following list to complete common HUB functions. Click on a the corresponding page link under each title for more detailed instructions.

Creating a Template

Create a template

OPI Menu Item: OPI Templates

Steps:

  • Click (+) to create a template

Required Fields:

Template name:  Friendly template name
Template SYSOID:  Use "234234" for most Modbus applications
Template protocol:  Select Modbus or SNMP

Adding a Node Template

Add node template

OPI Menu Item: OPI Templates

Steps:

  1. Click on hyperlink of Template Nodes to expose Node / Reading templates

  2. Complete all required fields

  3. Click (+) to add node template

Required Fields:

Node Template Name:  Friendly node template name
Node Type:  Select template that closest resembles the device being monitored
Voltage Rating:  Nominal voltage for scaling
Current Rating:  Nominal current for scaling

Adding a Specific Device

Add a specific device

OPI Menu Item: OPI Devices

Steps:

  1. Click (+)  Add Device

  2. Complete all required fields including "Enabled"

Required Fields:

Device IP:  IP address of the device being monitored
Device Name:  Friendly name of the device being monitored
Device Description:  Friendly description of the device being monitored
OPI Template:  Template to be used
HUB Device:  GUID of the HUB being polled
Enabled:  Click to enable the HUB to start polling

Assigning Registers to Node Templates

Assign registers to node template
(for Modbus devices)

OPI Menu Item: OPI Templates

Steps:

  1. Click on hyperlink in "Template Nodes" column

  2. Click on hyperlink in "Readings" column

  3. Complete all required fields

  4. Click (+) to add register to node map

Required Fields:

Channel:  Select the EMX channel that best resembles the matching register
Scale:  Scaling factor to apply to the reading
Offset:  Constant to add to scaled reading
Register value = (Reading x Scale) + Offset
Register:  Device register number (may require adding the mfg's base address if that is not zero)
Byte Mapping:  Register byte type (typically F-ABCD) -- accounts for endianness and byte swapping

Assigning OID Registers to Node Templates

Assign OID registers to node template (for SNMP devices)

OPI Menu Item: OPI Templates

Steps:

  1. Click on hyperlink in "Template Nodes" column

  2. Click on hyperlink in "Readings" column

  3. Complete all required fields

  4. Click (+) to add register to node map

Required Fields:

Channel:  Select the EMX channel that best resembles the matching register
Scale:  Scaling or multiple
Offset:  Typically +1 or -1 or 0
OID:  SNMP OID that corresponds to the MIB

Configuring Modbus Settings

Configure device

OPI Menu Item: OPI Devices

Steps:

  1. Click on "Modbus" hyperlink in Device Credentials column

  2. Complete all required fields

Required Fields:

IP Port:  Typically 502 for Modbus
Unit ID:  Modbus device ID (0-255)
Protocol:  Modbus

Configuring SNMP Settings

Configure device

OPI Menu Item: OPI Devices

Steps:

  1. Click on "SNMP" hyperlink in Device Credentials column

  2. Complete all required fields

Required Fields:

SNMP Version:  Select version 1, 2 or 3
Read Community:  Typically "public" unless administrator has changed it
Password:  SNMP device access password

Cloning a Device

Clone a device

OPI Menu Item: OPI Devices

Steps:

  1. Highlight device row and click "Clone"

  2. Complete all required fields

Required Fields:

New Device IP:  IP address of the new device being monitored
Device Name:  Friendly name of the new device being monitored

Viewing Device Readings

View device readings

OPI Menu Item: OPI Readings

Steps:

Required Fields:

Viewing GUIDs Assigned to Devices

View GUID assigned to device

OPI Menu Item: OPI Nodes

Steps:

Required Fields: