Rockwell Automation Allen-Bradley SynchLink 1756-DM Series Design Manual page 105

Glossary 5
Loss
see Attenuation
Major revision
A module revision that is updated any time there is a functional
change to the module resulting in an interface change with software.
Master node
A node in any SynchLink configuration that serves as the time master.
Minor revision
A module revision that is updated any time there is a change to the
module that does not affect its function or software user interface
(e.g. anomaly fix).
Multimode
A class of fibers where the light travels in multiple paths down the
fiber core.
Owner controller
The controller that creates and stores the primary configuration and
communication connection to a module.
Plastic Clad Silica Fiber
A step-index fiber made from silica core and a plastic cladding.
Plastic Fiber
A fiber consisting only of plastic with usually higher attenuation rates
than glass.
Power Module Interface (PMI)
The portion of the DPS equipment that receives Drive Communication
from the Drive Module and directly controls the power structure.
Receive Port Communications Format
The communications format used in a ControlLogix SynchLink module
for all data the module receives on its fiber optic receive port.
Publication 1756-TD008A-EN-P - August 2002