Instruction Manual

Using this Manual
Preface
ii
We use the following terms and abbreviations in this manual:
When you see this term: It means:
Computer The generic term for any intelligent programmable device that
can be used with specific interface modules.
DH Data Highway
DH+ Data Highway Plus
DH II Data Highway II
DH485 Data Highway485
Dropline Cable that connects a node to a network via a station
connector.
Node The point at which a device, such as a programmable
controller, connects to a network.
PLC
A Programmable Logic Controller, the term for any
AllenBradley PLC product line (such as the PLC2, PLC3,
PLC4, PLC5, SLC500, etc.).
Trunkline The bus or central part of a cable system.
In this manual, you may see:
ATTENTION: Identifies information about practices or
circumstances that can lead to personal injury or death, property
damage or economic loss.
Attention helps you:
- Identify a hazard
- Avoid the hazard
- recognize the consequences
Important: Identifies information that is critical for successful application and
understanding of the product.
Frequently Used T erms
Precautionary Notes