Technical data

RLO Result of logic operation (code bits)
RS Recommended Standard
RS 485 EIA standard (multipoint capability) standard for
electrical data transmission
S
S5-S5 Special type of communication PLC with PLC
SA Source Address
SAP Service Access Point. Logical interface points on the
interface between the layers via which the PDUs are
exchanged between service users.
SB Sequence block
SDA Send Data with Acknowledge
SDN Send Data with No Acknowledge
SDU Service Data Unit. Information about the service used
and the user data contained within it.
SINEC Siemens network architecture for coordination and
engineering
SINEC AP SINEC automation protocol
SINEC H1 SINEC bus system for industrial applications based on
CSMA/CD
SINEC H1FO SINEC bus system for industrial applications based on
CSMA/CD with fiber optics
SINEC H3 SINEC bus system for industrial applications based on
FDDI
B8976060/02 Abbreviations
A - 7 Volume 1