Siemens SIMATIC S5 Manual page 204

S5-95U, SINEC L2
Optical fiber link
P
Parameter assignment
error byte
Passive station
Planning level
Process supervision level
PROFIBUS
R
Receive mailbox
Receiver
Remote station
Repeater
Repeater adapter
Request
RS 485 transmission
technology
S
SAP
SDA
SDN
Segment
Send mailbox
Sender
EWA 4NEB 812 6112-02
Transmission medium employing fiber optic waveguides
Diagnostic byte for flagging possible errors when assigning
parameters to the integral L2-SEND and L2-RECEIVE FBs
A passive station may only exchange data with an active station
when requested to do so by that station
The hierarchical level in an integrated automation system at which
production orders are planned, product strategy is established,
production guidelines are defined and information from the
production process is monitored
The hierarchical level in an integrated automation system at which
decisions are made concerning production procedures and the
coordination of function groups
Process and field bus as defined in the PROFIBUS standard (DIN
19245). The standard specifies the functional, electrical and
mechanical properties of this bit-serial field bus system
Area in the data block (DB) or flag byte containing the data
received from a data transmission
remote station
A responding station in a communications link as opposed to the
initiating local station
A resource for amplifying LAN bus signals and coupling LAN
segments over great distances
A resource for a mixed configuration of RS 485 and FO
transmission technologies
A service request of the local station
SINEC L2 LAN configuration involving shielded twisted- pair wires
Service access point to layer 2
Send Data with Acknowledge: Data transmission service provided
by layer 2 for acyclic send and request mode
Send Data with No Acknowledge: Data transmission service
provided by layer 2 for acyclic send and request mode
The smallest functional unit of a LAN
Area in a data block (DB) or flag byte containing the data to be
transmitted
local station
List of Abbreviations/Glossary
C-5