GE Ethernet Absolute

6 min

Review the following information for setting up and configuring the GE Ethernet Absolute driver.

Litmus Edge Compatible Series

Compatibility parameter	Compatible items
Driver type	Ethernet
Validated devices/series	GE PACSystems RX3i
Replaces Gen 1 driver(s)	GE Fanuc RX3i Ethernet (Gen1)

To set up and configure this device in Litmus Edge, you will need to do the following:

Step 1: Set up and Configure the PLC Device

Step 2: Set up the PLC Device in Litmus Edge DeviceHub

Step 3: Configure the List of Registers

Step 1: Set up and Configure the PLC Device

If the device is configured for Ethernet access, find its network parameters. Note the IP address and ensure the Ethernet Global Data (EGD) port is configured (default port is 18245).

Step 2: Set up the PLC Device in Litmus Edge DeviceHub

Configure the following parameters when you Connect a Device with this driver. Update default values to the specific setup of your device.

Parameter	Value
Type	GE Fanuc
Driver	GE Ethernet Absolute
Network Address	The IP address you recorded in Step 1.
Port	18245
Slot Number	0
Read Timeout	3000 (ms)

Step 3: Configure the List of Registers

When you Add a Tag to the connected device, refer to the following register table and tag parameters. Refer to the following additional resources:

Organize Device and Tag Data by Using Metadata

Tag Formula Variables

Register Table

Name	Value Types	Address Format	Min Address	Max Address	Access Type	Description
I	bit	DDDDD	1	32768	R/O	Input
Q	bit	DDDDD	1	32768	R/W	Output
M	bit	DDDDD	1	32768	R/W	Internal
S	bit	DDD	1	128	R/O	System
SA	bit	DDD	1	128	R/W	System A
SB	bit	DDD	1	128	R/W	System B
SC	bit	DDD	1	128	R/W	System C
T	bit	DDDD	1	1024	R/W
G	bit	DDDD	1	7680	R/W	Genius Global
AI	word, int16, float	DDDDD	1	32640	R/O	Analog Input
AQ	word, int16, float	DDDDD	1	32640	R/W	Analog Output
R	word, int16, float	DDDDD	1	32640	R/W	Register
W	word, int16, float	DDDDD	1	32640	R/W

Tag Parameters

Name: Select a register name from the drop-down list. The available options depend on the names in the register table.

Value Type: Select a data type from the drop-down list. The available options depend on the register name selected.

Polling Interval: Enter a value in seconds. This determines how often the tag should poll the register for data.

Tag Name: Enter a name for the tag.

Description (Optional): Enter a description for the tag.

Address: Enter a tag address. The value must be in decimal format, within the allowed min/max range. Omit the leading zeros. The lowercase letters in the address format indicate how many digits you should enter in the address.

Count: Enter the number of register values to read. A count higher than 1 will generate an array of values from the address value configured and respective subsequent address values.

Tag Formula: Enter a formula for the tag to process the generated data. Two variables are permitted: value (current tag value) and timestamp (current tag UNIX time in milliseconds). The following math functions are available:

sqrt

power: power (x) performs the operation 10^x

log: log (x) is the natural logarithm (the logarithm is in base e)

exp: exp (x) performs the operation e^x

Only Publish on Change of Value: Select the checkbox to customize NATS messages to be published only when the value parameter changes to a new one. Change of Value only applies to boolean, numeric (such as int or float), and simple string data types. It does not apply to complex types, such as JSON or array. Poll-once topics will not be affected by Change of Value settings. These topics will still only see a single message.

Meta Data: Metadata summarizes basic information about data. This feature allows you to define key-value pair data for the device output payload later on. It can then be used to find, use, and reuse particular instances of data.

Note: If you use special characters in meta data key names, the special characters are replaced with underscore characters in the payload. This can cause two key names to be combined into one. For example, configuring the key names a**b and a&&b will cause only one key name to be created (a__b).