turck BL20 - Module bus; PDO

Glossary
D301087 0308 - BL20 CANopen9-6
Low impedance connection
Connection with a low AC impedance.
LSB
Least Significant Bit
Mass
All interconnected inactive components that do not take on a dangerous touch
potential in the case of a fault.
Module bus
The module bus is the internal bus in a BL20 station. The BL20 modules
communicate with the gateway via the module bus which is independent of the
fieldbus.
MSB
Most Significant Bit
NMT
see Chapter 2 "Short description of CANopen", Page 2-3.
Overhead
System administration time required by the system for each transmission
cycle.
PDO
see Chapter 2 "Short description of CANopen", Page 2-4.
PLC
Programmable Logic Controller.
Polling
Establish a Polled I/O Connection, i. e. a conventional Master/Slave relation-
ship between a controller and a DeviceNet device.
Potential compensation
The alignment of electrical levels of electrical components and external
conductive components by means of an electrical connection.
M
M
O
P