FAQ

REX 100 Ethernet Router

Assumed that a REX is connected to the myREX24 server 24/7 in idle, our tests revealed that it can demand up to 80 MB per month (also depending on the internet provider, 80 MB was the highest value that ever obtained in our tests).

As soon as a user connects to the REX via VPN or data values are logged via the REX, the data volume will be higher.

REX 200, Ethernet Router

Assumed that a REX is connected to the myREX24 server 24/7 in idle, our tests revealed that it can demand up to 80 MB per month (also depending on the internet provider, 80 MB was the highest value that ever obtained in our tests).

As soon as a user connects to the REX via VPN or data values are logged via the REX, the data volume will be higher.

PROFINET-Switch

Yes, but 100 Mbit is the prerequisite for performance and real time-compatible applications.

PROFINET is a complex communication protocol. In some situations it may be necessary to read and interpret the frame traffic with a protocol analyzer.

In order to be able to read in an Ethernet network, because expensive coupling hardware is used, which is looped into the line or is configured or a free port is configured in a switch as a "mirror port". The mirror port transmits all frames of another port of the switch as a copy. A device or PC can then run on the mirror port with the corresponding analysis software.

PROFINET participants mostly have 2 ports for the PROFINET cabling. The two ports are connected with one another by an internal 2-port switch component. If the power supply of a PROFINET participant fails, the communication is interrupted at this point in a network line. One can get around this problem with ring cabling using MRP technology.

If the power supply of a PROFINET switch fails, the communication with all participants connected to this switch is no longer possible.

This behavior is clearly different from that of PROFIBUS networks!

PROFINET is based on the Ethernet standard and the PROFINET switch can be used in normal TCP/IP networks, especially in industrial networks, as a managed switch. In the process, the PROFINETspecific functions of the PROFINET switch are not addressed.

General Ethernet functions can be read out and configured through the PROFINET website.

For PROFINET and PROFIBUS, I&M stands for "Identification and Maintenance". The I&M data contain information about the PROFINET participants. These are in some cases from the manufacturer (order number, serial number, etc.), but can also be described by the user (location, service contact, etc.).

The I&M data of all PROFINET participants can be read out and evaluated in the automation network with standard functions.

The PROFINET switch has appropriate I&M data records.

The PROFINET switch is a managed switch. The IP address is necessary to be able to address the switch as an active infrastructure component. The website of the PROFINET switch can be reached via the IP address and PROFINET participants (e.g. a CPU or a programming device) can configure the switch and read out information from the switch.

For the purposes of simplifying the IP address in the PROFINET, a device name can be used that is then synonymous in a project for the IP address.

Yes, the PROFIsafe protocol treats all components between the PROFIsafe Controller (CPU) and the PROFIsafe device as "black channel", which means that any network participants and components can be used in the route. If transmission disruptions should occur, the PROFIsafe components switch to a secure status.

The conformance classes B and C presume Ethernet cable in accordance with IEC61784-5-3.
In conformance class A, other cables (see PNO document "CC-A Cabling Guide“) and wireless connections can also be used.

A PROFINET switch handles PROFINET frames with the highest priority and ensures that frame loss doesn't occur and that jitter in the transmission remains minor. That secures the PROFINET transmission and allows precise regulating in PROFINET systems.

A PROFINET switch supports mechanisms for neighborhood detection (LLDP protocol) in order to detect and check the topology of the network. This ensures that the setup and the network wiring of the system are correct.

A PROFINET switch enables the replacement of PROFINET components during running operations. If a PROFINET participant malfunctions while in operation, a replacement device is detected following installation on the basis of its position in the topology (by the PROFINET neighbors) and is automatically provided with its IP address and its PROFINET name. The CPU can then configure the replacement device and restart.

Because many different devices are often installed into automation systems, the "Finding devices via LED display" function supports the easy search for a participant.

In order to improve the reliability of networks, PROFINET switches support the ring redundancy technology MRP (Media Redundancy Protocol).

However, the operation of a PROFINET network is also possible with unmanaged switches.

No, because the PROFINET protocol is currently only specified for 100 Mbit.

PROFINET is divided into conformance classes (CC). The conformance classes define sensible function scopes and are thus decision-making criteria for system operators when using PROFINET components.

With prior definition of an application in a CC, the user can make a selection of components with clearly defined minimum properties.

You can find more information on the conformance classes in the PNO document "The PROFINET IO Conformance Classes - Guidelines for PROFINET IO (Order no.: 7.041)“.

The PNO certification is carried out by accredited testing labs and is standardized by the PNO. PROFINET certification should ensure both the function of the PROFINET components in accordance with standards and the interoperability of various manufacturers in a PROFINET network.

If a PROFINET participant malfunctions while in operation, a replacement device is detected following installation on the basis of its position in the topology (by the PROFINET neighbors) and is automatically provided with its IP address and its PROFINET name. The CPU can then configure the replacement device and restart. The neighboring PROFINET devices, for example, the switch, must to this purpose support PROFINET in order to enable this function.

The "BF" LED shows logical "bus errors", for example, that the device has not received a configuration, the configuration is defective, or no PROFINET communication is possible at all (network error).

The "SF" LED shows "collective errors". This can include, for example, an existing PROFINET diagnosis.

The PROFINET switch is "real time-compatible" and supports the PROFINET real time class 2 for cyclical data exchange. PROFINET is generally differentiated into two main real time classes: RT and IRT.

The "real time capability" of an industrial bus system generally involves the chronological precision of the cyclical IO transmission. For complex and distributed automation tasks, especially in the drive control area, it is important that the cyclical data transmission always takes place consistently. Longer interruptions due to other Ethernet traffic, for example, video cameras or project transmissions, should not influence the PROFINET IO cycle where possible.

PROFINET RT (real time) uses the standard technologies of managed switches (e.g. QoS) to always prioritize important Ethernet frames of bus communication in relation to chronologically non-critical frames.

PROFINET IRT (isochronous real time) uses special PROFINET switches to keep the jitter and the rhythm of the IO cycle as exact as possible in the network and to ensure a synchronous rhythm and the best transmission possible.

The Helmholz PROFINET switch supports PROFINET RT, but not IRT.

NETLink PRO

DP/DP-Koppler

There is no separate GSD file for the DP/DP coupler. The DP/DP coupler can be selected directly in the hardware configurator of the Simatic Manager or TIA-Portal under the Siemens order number "6ES7 158-0AD01-0XA0 DP/DP coupler, edition 2" and inserted into the project.

DP/PN Coupler

Answer 1:

When using universal modules, please note that they are only available on Profibus side. The picture of the DP / PN coupler web interface shows in red that in the 5 universal modules inthe first 3 slots no regular variables have been parameterized that are conform to the PN configuration. In this case, the SF LEDs on the DP/PNcoupler lights up and data transfer is not possible. The number of configured input or output bytes must match exactly with the other side.

Answer 2:

Depending on the application, consistent data transmission can also be selected for PROFIBUS. On the PROFINET side, all modules are always consistent, so that only the corresponding sequences and sizes (matching with the opposite side) must be observed.

REX 250, Ethernet Router

Assumed that a REX is connected to the myREX24 server 24/7 in idle, our tests revealed that it can demand up to 80 MB per month (also depending on the internet provider, 80 MB was the highest value that ever obtained in our tests).

As soon as a user connects to the REX via VPN or data values are logged via the REX, the data volume will be higher.

PROFINET-Switch IP67

Yes, but 100 Mbit is the prerequisite for performance and real time-compatible applications.

PROFINET is a complex communication protocol. In some situations it may be necessary to read and interpret the frame traffic with a protocol analyzer.

In order to be able to read in an Ethernet network, because expensive coupling hardware is used, which is looped into the line or is configured or a free port is configured in a switch as a "mirror port". The mirror port transmits all frames of another port of the switch as a copy. A device or PC can then run on the mirror port with the corresponding analysis software.

PROFINET participants mostly have 2 ports for the PROFINET cabling. The two ports are connected with one another by an internal 2-port switch component. If the power supply of a PROFINET participant fails, the communication is interrupted at this point in a network line. One can get around this problem with ring cabling using MRP technology.

If the power supply of a PROFINET switch fails, the communication with all participants connected to this switch is no longer possible.

This behavior is clearly different from that of PROFIBUS networks!

PROFINET is based on the Ethernet standard and the PROFINET switch can be used in normal TCP/IP networks, especially in industrial networks, as a managed switch. In the process, the PROFINETspecific functions of the PROFINET switch are not addressed.

General Ethernet functions can be read out and configured through the PROFINET website.

For PROFINET and PROFIBUS, I&M stands for "Identification and Maintenance". The I&M data contain information about the PROFINET participants. These are in some cases from the manufacturer (order number, serial number, etc.), but can also be described by the user (location, service contact, etc.).

The I&M data of all PROFINET participants can be read out and evaluated in the automation network with standard functions.

The PROFINET switch has appropriate I&M data records.

The PROFINET switch is a managed switch. The IP address is necessary to be able to address the switch as an active infrastructure component. The website of the PROFINET switch can be reached via the IP address and PROFINET participants (e.g. a CPU or a programming device) can configure the switch and read out information from the switch.

For the purposes of simplifying the IP address in the PROFINET, a device name can be used that is then synonymous in a project for the IP address.

Yes, the PROFIsafe protocol treats all components between the PROFIsafe Controller (CPU) and the PROFIsafe device as "black channel", which means that any network participants and components can be used in the route. If transmission disruptions should occur, the PROFIsafe components switch to a secure status.

The conformance classes B and C presume Ethernet cable in accordance with IEC61784-5-3.
In conformance class A, other cables (see PNO document "CC-A Cabling Guide“) and wireless connections can also be used.

A PROFINET switch handles PROFINET frames with the highest priority and ensures that frame loss doesn't occur and that jitter in the transmission remains minor. That secures the PROFINET transmission and allows precise regulating in PROFINET systems.

A PROFINET switch supports mechanisms for neighborhood detection (LLDP protocol) in order to detect and check the topology of the network. This ensures that the setup and the network wiring of the system are correct.

A PROFINET switch enables the replacement of PROFINET components during running operations. If a PROFINET participant malfunctions while in operation, a replacement device is detected following installation on the basis of its position in the topology (by the PROFINET neighbors) and is automatically provided with its IP address and its PROFINET name. The CPU can then configure the replacement device and restart.

Because many different devices are often installed into automation systems, the "Finding devices via LED display" function supports the easy search for a participant.

In order to improve the reliability of networks, PROFINET switches support the ring redundancy technology MRP (Media Redundancy Protocol).

However, the operation of a PROFINET network is also possible with unmanaged switches.

No, because the PROFINET protocol is currently only specified for 100 Mbit.

PROFINET is divided into conformance classes (CC). The conformance classes define sensible function scopes and are thus decision-making criteria for system operators when using PROFINET components.

With prior definition of an application in a CC, the user can make a selection of components with clearly defined minimum properties.

You can find more information on the conformance classes in the PNO document "The PROFINET IO Conformance Classes - Guidelines for PROFINET IO (Order no.: 7.041)“.

The PNO certification is carried out by accredited testing labs and is standardized by the PNO. PROFINET certification should ensure both the function of the PROFINET components in accordance with standards and the interoperability of various manufacturers in a PROFINET network.

If a PROFINET participant malfunctions while in operation, a replacement device is detected following installation on the basis of its position in the topology (by the PROFINET neighbors) and is automatically provided with its IP address and its PROFINET name. The CPU can then configure the replacement device and restart. The neighboring PROFINET devices, for example, the switch, must to this purpose support PROFINET in order to enable this function.

The "BF" LED shows logical "bus errors", for example, that the device has not received a configuration, the configuration is defective, or no PROFINET communication is possible at all (network error).

The "SF" LED shows "collective errors". This can include, for example, an existing PROFINET diagnosis.

The PROFINET switch is "real time-compatible" and supports the PROFINET real time class 2 for cyclical data exchange. PROFINET is generally differentiated into two main real time classes: RT and IRT.

The "real time capability" of an industrial bus system generally involves the chronological precision of the cyclical IO transmission. For complex and distributed automation tasks, especially in the drive control area, it is important that the cyclical data transmission always takes place consistently. Longer interruptions due to other Ethernet traffic, for example, video cameras or project transmissions, should not influence the PROFINET IO cycle where possible.

PROFINET RT (real time) uses the standard technologies of managed switches (e.g. QoS) to always prioritize important Ethernet frames of bus communication in relation to chronologically non-critical frames.

PROFINET IRT (isochronous real time) uses special PROFINET switches to keep the jitter and the rhythm of the IO cycle as exact as possible in the network and to ensure a synchronous rhythm and the best transmission possible.

The Helmholz PROFINET switch supports PROFINET RT, but not IRT.

FLEXtra PROFINET-Switch

Yes, but 100 Mbit is the prerequisite for performance and real time-compatible applications.

PROFINET is a complex communication protocol. In some situations it may be necessary to read and interpret the frame traffic with a protocol analyzer.

In order to be able to read in an Ethernet network, because expensive coupling hardware is used, which is looped into the line or is configured or a free port is configured in a switch as a "mirror port". The mirror port transmits all frames of another port of the switch as a copy. A device or PC can then run on the mirror port with the corresponding analysis software.

PROFINET participants mostly have 2 ports for the PROFINET cabling. The two ports are connected with one another by an internal 2-port switch component. If the power supply of a PROFINET participant fails, the communication is interrupted at this point in a network line. One can get around this problem with ring cabling using MRP technology.

If the power supply of a PROFINET switch fails, the communication with all participants connected to this switch is no longer possible.

This behavior is clearly different from that of PROFIBUS networks!

PROFINET is based on the Ethernet standard and the PROFINET switch can be used in normal TCP/IP networks, especially in industrial networks, as a managed switch. In the process, the PROFINETspecific functions of the PROFINET switch are not addressed.

General Ethernet functions can be read out and configured through the PROFINET website.

For PROFINET and PROFIBUS, I&M stands for "Identification and Maintenance". The I&M data contain information about the PROFINET participants. These are in some cases from the manufacturer (order number, serial number, etc.), but can also be described by the user (location, service contact, etc.).

The I&M data of all PROFINET participants can be read out and evaluated in the automation network with standard functions.

The PROFINET switch has appropriate I&M data records.

The PROFINET switch is a managed switch. The IP address is necessary to be able to address the switch as an active infrastructure component. The website of the PROFINET switch can be reached via the IP address and PROFINET participants (e.g. a CPU or a programming device) can configure the switch and read out information from the switch.

For the purposes of simplifying the IP address in the PROFINET, a device name can be used that is then synonymous in a project for the IP address.

Yes, the PROFIsafe protocol treats all components between the PROFIsafe Controller (CPU) and the PROFIsafe device as "black channel", which means that any network participants and components can be used in the route. If transmission disruptions should occur, the PROFIsafe components switch to a secure status.

The conformance classes B and C presume Ethernet cable in accordance with IEC61784-5-3.
In conformance class A, other cables (see PNO document "CC-A Cabling Guide“) and wireless connections can also be used.

A PROFINET switch handles PROFINET frames with the highest priority and ensures that frame loss doesn't occur and that jitter in the transmission remains minor. That secures the PROFINET transmission and allows precise regulating in PROFINET systems.

A PROFINET switch supports mechanisms for neighborhood detection (LLDP protocol) in order to detect and check the topology of the network. This ensures that the setup and the network wiring of the system are correct.

A PROFINET switch enables the replacement of PROFINET components during running operations. If a PROFINET participant malfunctions while in operation, a replacement device is detected following installation on the basis of its position in the topology (by the PROFINET neighbors) and is automatically provided with its IP address and its PROFINET name. The CPU can then configure the replacement device and restart.

Because many different devices are often installed into automation systems, the "Finding devices via LED display" function supports the easy search for a participant.

In order to improve the reliability of networks, PROFINET switches support the ring redundancy technology MRP (Media Redundancy Protocol).

However, the operation of a PROFINET network is also possible with unmanaged switches.

No, because the PROFINET protocol is currently only specified for 100 Mbit.

PROFINET is divided into conformance classes (CC). The conformance classes define sensible function scopes and are thus decision-making criteria for system operators when using PROFINET components.

With prior definition of an application in a CC, the user can make a selection of components with clearly defined minimum properties.

You can find more information on the conformance classes in the PNO document "The PROFINET IO Conformance Classes - Guidelines for PROFINET IO (Order no.: 7.041)“.

The PNO certification is carried out by accredited testing labs and is standardized by the PNO. PROFINET certification should ensure both the function of the PROFINET components in accordance with standards and the interoperability of various manufacturers in a PROFINET network.

If a PROFINET participant malfunctions while in operation, a replacement device is detected following installation on the basis of its position in the topology (by the PROFINET neighbors) and is automatically provided with its IP address and its PROFINET name. The CPU can then configure the replacement device and restart. The neighboring PROFINET devices, for example, the switch, must to this purpose support PROFINET in order to enable this function.

The "BF" LED shows logical "bus errors", for example, that the device has not received a configuration, the configuration is defective, or no PROFINET communication is possible at all (network error).

The "SF" LED shows "collective errors". This can include, for example, an existing PROFINET diagnosis.

The PROFINET switch is "real time-compatible" and supports the PROFINET real time class 2 for cyclical data exchange. PROFINET is generally differentiated into two main real time classes: RT and IRT.

The "real time capability" of an industrial bus system generally involves the chronological precision of the cyclical IO transmission. For complex and distributed automation tasks, especially in the drive control area, it is important that the cyclical data transmission always takes place consistently. Longer interruptions due to other Ethernet traffic, for example, video cameras or project transmissions, should not influence the PROFINET IO cycle where possible.

PROFINET RT (real time) uses the standard technologies of managed switches (e.g. QoS) to always prioritize important Ethernet frames of bus communication in relation to chronologically non-critical frames.

PROFINET IRT (isochronous real time) uses special PROFINET switches to keep the jitter and the rhythm of the IO cycle as exact as possible in the network and to ensure a synchronous rhythm and the best transmission possible.

The Helmholz PROFINET switch supports PROFINET RT, but not IRT.