Siemens SIMATIC ET 200M Operating Instructions Manual page 263

Signal module
Signal modules (SM) are the interface between the process and the automation system.
Digital input and output modules (I/O module, digital) as well as analog input and output
modules (I/O module, analog) are available.
Slave
Before a slave can exchange data with a → master it must be prompted to do so by the
master.
By slaves we mean, for example, all DP slaves such as ET 200X, ET 200M, ET 200S, etc.
SNMP
SNMP (Simple Network Management Protocol) is the standardized protocol for diagnosing
and also configuring the Ethernet Network infrastructure.
In the office area and in automation technology, devices support a wide range of
manufacturers on the Ethernet SNMP.
SNMP-based applications can be operated parallel to applications with PROFINET on the same
network.
The scope of the supported functions varies depending on the device type. A switch, for
example, has more functions than a CP 1616.
STEP 7
Programming language used to create user programs for SIMATIC S7 control systems.
Switch
PROFIBUS is based on a line topology. Communication nodes are interconnected by means of
a passive line, namely the bus.
By contrast, Industrial Ethernet is made up of point-to-point connections: Each
communication node is interconnected directly with one other communication node.
If a node is to be interconnected with several other communication nodes, this
communication node is connected to the port of an active network component (switch.)
Other communications nodes (including switches) can then be connected to the other ports
of the switch. The connection between a communication node and the switch remains a
point-to-point connection.
The task of a switch is thus to regenerate and distribute received signals. The switch "learns"
the Ethernet address(es) of a connected PROFINET device or of other switches, and passes
only the signals intended for the connected PROFINET device or switch.
A switch has a certain number of ports. Connect only one PROFINET device or a further switch
to any one of the ports.
ET 200M
Operating Instructions, 04/2022, EWA-4NEB7806006-09
Glossary
263