Appendix 173/176
3 842 530 344/2014-05, MIT: ID 40, Bosch Rexroth AG
16.2 Abbreviations and terms
Technical term Description
Sign-off Terminates MDT communication either with the commands DIS-
CONNECT/RECONNECT or the appropriate auto mode.
Actual link state Shows the current link state between SLK and MDT.
Commanded
link state
Command to the SLK to change the system link state, e.g., from
the CONNECTED state phase to close the MDT.
Auto mode Automatically terminates the data transmission phase with >auto
reconnect or >auto disconnect.
Auto disconnect Automatically terminates the data transmission phase and turns
off the >HF field.
Auto reconnect Automatically terminates the data transmission phase, but the HF
field remains on.
Buffered prefetch Data is read and stored in internal buffers.
Byte array Data array with a width of 8 bits and variable size.
CAN Abbreviation for the CANopen fieldbus system that offers stan-
dardized payload transmission services.
COB ID Communication Object Identifier. Unique ID of a data telegram in
CANopen.
CONNECTED state Direct MDT access via the fieldbus. The CONNECTED state has to
be terminated by a bus command.
Data block A data block consists of the SLK address and a byte count. The
SLK address is the start address, and the byte count determines
the area length from the start address. It is written as address/
byte count.
Unbuffered prefetch Data is read and transmitted without buffers via >event-oriented
data exchange.
Event-oriented
data exchange
Cyclical data transmission from the SLK to the PLC.
Emergency shell Active shell after fatal system error.
Fieldbus master User on a bus system with command authority over subordinate
users (>slaves).
Fieldbus slave User on a bus system without command authority.
Formatting value Entered in the MDT memory during MDT formatting.
HF field Electromagnetic high frequency field. Allows communication be-
tween MDT and SLK without contact.
High byte High byte of a 16-bit value.
IBS Abbreviation for the Interbus open fieldbus system according to
standard EN 50254.
ID 40/SLK-CAN Product designation for the SLK of the ID 40 system for connect-
ing to CANopen.
ID 40/SLK-IBS Product designation for the SLK of the ID 40 system for connect-
ing to Interbus.
ID 40/SLK-PDP Product designation for the SLK of the ID 40 system for connect-
ing to Profibus.
ID 80/E Product designation for the forerunner system of the ID 40. The
MDTs in both identification systems are compatible.
Node number The SLK can be reached in the fieldbus system under this number.
The node number is configured via the serial interface. The IBS
does not require node numbers.
Do not confuse with the SLK address!
Command-oriented
data exchange
Data transmission option independent of the cyclical functioning
of fieldbus systems.
Console Shell
Low byte Low byte of a 16-bit value.
PROOF COPY 1 | 20.05.2014 | FOR INTERNAL USE ONLY
ENGLISH
To Next Page
Loading...
