
Glossary
SIMATIC MV420 / SIMATIC MV440
412
Operating Instructions, 04/2013, A5E02371045-06
Ping
A utility for checking connections to one or more remote hosts. The "ping" command uses
the echo packets and echo replies of ICMP to check connectivity with an IP system in a
network. Ping is useful in troubleshooting the IP network or the router.
Port or port address
Address for a channel for data transfer between an input or output device and the processor.
From the CPU’s perspective, a port represents one or more memory addresses to which it
can send data or from which it can receive data. Special hardware such as expansion
boards places data from a device in the memory addresses and sends data from these
addresses to the device. Some ports are only for input and some only for output.
Power over Ethernet (PoE)
"Power over Ethernet" (PoE) is the name of a technology with which network devices can be
supplied with power via the 8-wire Ethernet cable.
The main advantage of "Power over Ethernet" is that the power supply cable is no longer
necessary: Devices connected to Ethernet can be installed in less accessible areas or in
areas in which large numbers of cables would be inconvenient. On the one hand, this means
a drastic reduction of installation costs. On the other hand, a central uninterruptible power
supply (USP) that is simple to implement increases the protection against failure of the
connected devices.
PROFIBUS DP
PROFIBUS-DP is used to control readers and actuators using a central controller in
production engineering. It is also used in connection with "distributed intelligence", i.e.
connecting multiple controllers to form a network. It provides data transmission up to 12
Mbps on twisted-pair cables and data transmission over sliding contacts for mobile
subscribers in exceptional cases or optical data transmission in unobstructed space.
PROFINET device
A PROFINET IO system is made up of the following devices:
●
An I/O controller is a controller or PC that controls automation tasks.
●
An I/O device is a field device that is configured and controlled by an I/O controller.
An I/O device is made up of several modules and submodules.
●
I/O Supervisor is a development tool typically based on a PC that is used to assign
parameters to and perform diagnostics on individual I/O devices, and to configure the
entire plant. The I/O controller gets its data from the I/O Supervisor and configures the I/O
device based on this.
An application relation (AR) is formed between an I/O controller and I/O device.
Communication relations (CR) with varying properties are specified for the transfer of
parameters, cyclic data communication and alarm handling based on this AR.
Summary of Contents for SIMATIC MV420
Page 2: ......
Page 418: ...Glossary SIMATIC MV420 SIMATIC MV440 416 Operating Instructions 04 2013 A5E02371045 06 ...
Page 423: ......