A-W
- A -
activation file
A text file that contains all of the activation information that is required to license a software product and allow it to function properly. While the file is simply plaintext, the contents of the file are protected by a signature.
Activation key
Activation files contain a database of activation keys. Each key is particular to a certain product and must be accessible on a local or remote drive for that product to run.
- D -
driver
The software that allows the communication device installed in your system to communicate over the network.
Dynamic Data Exchange (DDE)
A form of inter-process communication. When two or more programs that support DDE are running simultaneously, they can exchange information and commands.
- E -
External Access
A property that allows you to specify the level of access (Read-Only, Read/Write, or None) external applications and devices have to tags.
- L -
license
Authorization to use a specified number of instances of software. A product's activation key contains a license for each copy of the software you have purchased.
links
Links connect steps to transitions and transitions to steps. The direction of the link is always from the bottom of one element to the top of another element. Links have no runtime function other than defining the order of sequence elements.
- O -
OPC (Open Platform Communications)
A communications protocol that provides a defined set of COM interfaces that in turn provide data access functions. OPC can be used by the
FactoryTalk Batch
Server as a more flexible and powerful alternative to the Dynamic Data Exchange (DDE) communications protocol when communicating with process-connected devices (PCDs).- P -
packet
The transmission unit exchanged at a network layer.
poke
The DDE's version of a write.
- R -
read
To acquire data from a storage place. For example, the controller reads information from the input data file to solve the ladder program.
- T -
topic
A topic represents a specific path to a processor.
- W -
write
To copy data to a storage device. For example, the controller writes the information from the output data file to the output modules.
Provide Feedback