Siemens SIMATIC ET 200iSP Operating Instructions Manual page 368

Glossary
I&M (identification data)
Identification data is information stored on a module.
I data: Information about the module that is normally printed on the enclosure of the module.
I data is read-only.
M data: System-specific information such as the installation location and date. M data is
generated during configuration and written to the module.
Isolated
For isolated I/O modules, the reference potentials of the control and load circuits are electrically
isolated, for example, by means of optical isolators, relays, or transformers. Input/output
circuits may be grouped.
Master
A master station which is in possession of the token can send data to other nodes and request
data from these (= active node.) Examples of DP masters are the CPU 315-2 DP or the IM308-
C.
NAMUR sensor
A NAMUR sensor provides functions for monitoring cable breaks and short-circuits.
Node
A device that can send, receive, or repeat data on the bus (for example, a DP master, DP
slave, or RS 485 repeater).
Non-isolated
For non-isolated I/O modules, the reference potentials of the control and load circuits are
electrically connected.
Parameter assignment
Parameter assignment is the transfer of slave parameters from the DP master to the DP slave.
PCS7-OS
Operator station (operating and monitoring system) for the SIMATIC PCS 7 process control
system.
Permanent wiring
All the elements carrying wiring (terminal modules) are installed on a mounting rail. The
electronic modules are inserted into the terminal modules.
368
Operating Instructions, 11/2017, A5E00247483-07
ET 200iSP