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APPENDIX A
Glossary
Bit Strobe
In case a Slave unit is configured for bit strobe data exchange, it will send data
immediately when it has received a broadcast request (Input only).
Bus off
A bus off condition occurs when an large ragte of errors is detected on the
CAN bus by the device. The device can no longer receive or transmit mes-
sages on the network. This condition is often caused by noise on the network
or incorrect data rate setting.
Change of state (COS)
In case a Slave unit is configured for change of state data exchange, it will
send data immediately when its data has changed. This mechanism reduces
the network traffic as unchanged data does not need to be transmitted.
The mechanism does have a maximum time interval after which unchanged
data will be transferred.
Cyclic I/O
In case a Slave unit is configured for cyclic I/O data exchange, it will send data
at a fixed user-configurable time interval.
Electronic Data Sheet
(EDS) Files
Text files which are used by network configuration tools such as CX-Integrator
to configure the system. The configuration consists of DeviceNet network
related settings and may contain additional configurable parameters.
Explicit Messaging
Explicit messages are acyclic communication messages used for configura-
tion or monitoring the devices over DeviceNet
Inverter
A device that electronically changes DC to AC current through an alternating
process of switching the input to the output, inverted and non-inverted. It con-
tains three inverter circuits to generate 3-phase output to the motor.
Polled I/O
In case a Slave unit is configure for Polled I/O data exchange, it will send data
immediately when it has received a request for the data.
Torque
The rotational force exerted by a motor shaft. The units of measurement con-
sist of the distance (radius from shaft center axis) and force (weight) applied
at that distance. Units are usually given as pound-feet, ounce-inches, or New-
ton-meters.
Trip event
An event that causes the inverter to stop operation is called a "trip" event (as
in tripping a circuit breaker). The inverter keeps a history log of trip events.
They also require an action to clear.
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Страница 14: ...xiv Compliance with EC Directives...
Страница 20: ...6 Introduction to DeviceNet Section 1 3...
Страница 46: ...32 Monitoring additional Inverter status using COS Section 4 9...
Страница 56: ...42 APPENDIX A...
Страница 68: ...54 Extended Speed and Acceleration Control IO 110 111 APPENDIX B...
Страница 84: ...70 AC DC Drive Object Class 0x2A APPENDIX D...
Страница 92: ...78 Explicit Message Error Codes APPENDIX E...