Hub Programming Overview

Reference the following to complete common HUB functions. Click on a specific function for more detailed instructions.

Function	OPI Menu Item	Steps	Required field(s):  Field definition
Create a template	OPI Templates	Click (+)  to create a template	Template name:  Friendly template name Template SYSOID:  Use "234234" for most Modbus applications Template protocol:  Select Modbus or SNMP
Add node template	OPI Templates	1. Click on hyperlink of Template Nodes to expose Node / Reading templates 2. Complete all required fields 3. Click (+) to add node template	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
Add a specific device	OPI Devices	1. Click (+)  Add Device 2. Complete all required fields including "Enabled"	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
Assign registers to node template (for Modbus devices)	OPI Templates	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	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
Assign OID registers to node template  (for SNMP devices)	OPI Templates	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	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
Configure device (Modbus settings)	OPI Devices	1. Click on "Modbus" hyperlink in Device Credentials column 2. Complete all required fields	IP Port:  Typically 502 for Modbus Unit ID:  Modbus device ID (0-255) Protocol:  Modbus
Configure device (SNMP settings)	OPI Devices	1. Click on "SNMP" hyperlink in Device Credentials column 2. Complete all required fields	SNMP Version:  Select version 1, 2 or 3 Read Community:  Typically "public" unless administrator has changed it Password:  SNMP device access password
Clone a device	OPI Devices	1. Highlight device row and click "Clone" 2. Complete all required fields	New Device IP:  IP address of the new device being monitored Device Name:  Friendly name of the new device being monitored
View device readings	OPI Readings
View GUID assigned to device	OPI Nodes