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Below is a list of questions we are frequently asked please email us with your query.

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» General System Questions

Can I copy the project to the MMC / SD card with Symbols and comments like I do now with Siemens S7-315-2 CPU?

Yes, also the INSEVIS Micro SD Cards are standard off the shelf Micro SD's with FAT32 format. This means you can read and write to them with standard Micro SD card readers, you don't need to purchase special equipment from us. Because they are standard you can copy ANY type of file type to them to support your project documentation.
Using the Copy RAM to ROM command will copy the project as S7proj.wld file to the Micro SD card the same as in Siemens.

Can I use STEP®7 or TIA Portal to program the INSEVIS CPU's?

Yes, infact most of our clients only use STEP®7 or TIA Portal, you can however purchase WinPLC7 from us if you don't have STEP®7 already and WinPLC7 is 1/3 of the price of STEP®7.

When I download my logic code to the INSEVIS CPU it reports much smaller memory usage than a VIPA CPU and Siemens S7-400 CPU, why?

INSEVIS CPU's come with larger memory, also VIPA SPEED7 CPU's have 50% program and 50% datablocks allowed for. For example you order a 128KB VIPA CPU, then you only have 64KB program + 64KB DB's.
With INSEVIS 640KB CPU you can use the entire memory for program or DB's in any ratio.

Can I use GET and PUT on the INSEVIS TCP port between my existing Siemens PLC and the INSEIVS CPU?

Yes, GET/PUT, and SEND/RECEIVE on all INSEVIS Ethernet ports is available not only between Siemens and INSEVIS but also INSEVIS to INSEVIS.

Does INSEVIS support data archiving directly to the SD card?

Yes, by using the built in SFC.

Can I connect Siemens Operator panels to the INSEVIS TCP port, or should I use the INSEVIS operator panels instead?

Yes, you can use Siemens Operator Panels on any INSEVIS CPU TCP port, Siemens ProfiNet Panels are also supported on the INSEVIS standard TCP/IP port on each CPU, but we also offer the INSEVIS range of panels which are lower cost and technically advanced.

We presently have TCP/IP Peer to Peer comms established between S7-400® CPU's and S7-300® CPU's, will we be able to connect the INSEVIS CPU to this network also?

Yes, send/receive, sendall/receiveall, xget/xput plus more functions are built in via SFC's. ISO on TCP/IP (RFC1006) S7 functions and PG functions are built into the TCP CPU's for Programing via STEP®7, TIA Portal and SCADA connections.

We would like to move away from using Profibus for our SCADA communications, however, we have found Ethernet on S7-300® from Siemens to be so expensive (and slow - 187kb/s backplane limit) that we stick with using the onboard Profibus DP port on the PLC instead. Can we connect Citect to the INSEVIS CC303V for Profibus and can we use TCP/IP with the CC303T or do we need to use MPI/Profibus?

Yes, CITECT, Wonderware, WinCC®, plus many more SCADA systems can connect to the INSEVIS CPU's via TCP/IP using the S7 drivers 100Mb/s. In this way you can keep your SCADA comms away from your I/O network and maintain the Profibus performance for critical I/O tasks. The SCADA update times will also improve by using the 100Mb/s TCP/IP network. By using the INSEVIS onboard TCP port, you also remove the problem S7-300® from Siemens has with the 187kb/s backplane speed limit, meaning with Siemens S7-300® you can only achieve a throughput of 187kb/s to the CPU on TCP.

 » System 300 / S7-300®

Can you interchange the Siemens S7-300® Digital Input, Digital Output and Analogue Input/Output cards with Helmholz 300 cards of the same part number type ?

yes, if you use a Siemens 6ES7 321-1BH00 then purchase instead a AUTW 321-1BH00. Turn the CPU off remove the Siemens card and replace it with the Helmholz card, replace the existing front connector, no programming changes are required.

When you change a Siemens S7-300® card to Helmholz 300 of the same type are there programming changes required?

no, if you use the correct Helmholz card as replacement no programming changes will be required, you do not even need to connect your laptop to the CPU.

Are there wiring changes required to accept the new Helmholz 300 card?

no, the Helmholz 300 cards utilise the Siemens S7-300® front connectors.

What are the benefits of using the Helmholz 300 cards instead of the Siemens S7-300® cards?

Lower Price is the obvious reason, but also the Helmholz cards have built in features like maintenance free Short Circuit and Overload automatic protection, Multirange Analogue inputs including Thermocouples on standard card, just to name a few.

The INSEVIS CPU's look to me to have some extra ports on them over my current Siemens CPU, what are these for?

Each CPU comes standard with TCP/IP and CanOpen ports, the CC3xxV CPU's optionally come with DP Master/Slave

Can we use the Helmholz 300 I/O cards as Profibus I/O like the ET200M from Siemens?

Yes, by using the Siemens ET200M® IM153, or the VIPA IM353 which gives the benefit of connecting up to 32 cards in one line / drop. (Limited to 8 cards with Siemens IM153)

Does INSEVIS use an external battery to backup the PLC memory, is it the same type as Siemens S7-300®?

No, INSEVIS uses an internal accumulator and internal FLASH memory.

 » Profibus I/O

Can we use the Helmholz 300V I/O cards as Profibus I/O like the ET200M® from Siemens?

Yes, by using the Siemens ET200M® IM153, or using the VIPA IM353 which gives the benefit of connecting up to 32 cards in one line / drop. (Limited to 8 cards with Siemens IM153)

Can the INSEVIS Racks be used as Remote I/O like ET200M® from Siemens?

Yes, by using INSEVIS Remote racks which have CanOpen as the communication you can expand your system with additional I/O locally or remotely.
Helmholz TB20 Remote I/O system support Profibus, ProfiNet, CanOpen/CanBus, ModbusTCP, EthernetIP and EtherCat. TB20 supports up to 64 modules in a single rack, so it is very flexible and expandable for a low cost.

 » Software

Can WinPLC7 program Siemens PLC's as well as INSEVIS?

Yes, WinPLC will program all INSEVIS PLC's plus S7-300® from Siemens. With S7-400® WinPLC7 can program them, but does not have the hardware modules in the library at this time to setup the hardware configuration.

In which communication methods can you go online to any S7300® / INSEVIS type PLC?

WinPLC7 offers programming connection via TCP/IP. The TCP/IP driver is inbuilt to the software so you do not need to purchase a MPI or Profibus adapter from Siemens.




S7200, S7-300, S7-400, S5, S5-115U, S5-135U, SIMATIC, STEP, HMI, WinCC, ET200 are registered trademarks of Siemens

Featured Product

S7 MPI Profi NETLinkPro Compact

NETLink® PRO Compact, PROFIBUS Ethernet gateway
(incl. 3 m Ethernet cable, Quick Start Guide, CD with software and manual)

The NETLink® PRO Compact combines flexibility with a compact design. Power is supplied to the NETLink® through the CPU of the automation device or externally with DC 24 V as an option.
The network connection can be used with any standard Cat-5 cable, making cable lengths up to 100 meters feasible without additional components.
In general, the connection to each MPI/PROFIBUS connection of the bus system or directly at the interfaces of active and passive participants is also possible.
The PG socket integrated in the connector housing allows connection of additional devices. The NETLink® PRO Compact enables conversion from TCP/IP to MPI/PPI/PROFIBUS with up to 32 simultaneously open connection channels, and passive bus participants can be addressed with the switchable single-master operation.
The integration of SCADA, HMI, and OPC applications is possible via the widely used ISO on TCP (RFC 1006) protocol. The applications are automatically detected and forwarded by the NETLink® PRO Compact. The integrated web interface offers parameterization, diagnostic, and security features, and for functional enhancements the user can use our free diagnostic software SHTools to automatically perform firmware updates, for example.
The software’s latest version is available for download.

• RFC 1006 (ISO on TCP)
• CPU-to-CPU communication (with S7-300* and S7-400*)
• Power can be supplied by the CPU or, alternatively, by an external DC 24 V supply
• Support for all common S7 engineering tools
• Dynamic address assignment using DHCP
• Security functions for securing TCP/IP access
• PLC write protection feature can be enabled and disabled
• Up to 16 TCP connections
• Up to 32 MPI/PROFIBUS connections
• Easy configuration via web interface
• Variables can be monitored on a browser window
• Support for configuring slave parameters
• Electrical isolation for MPI/PPI/PROFIBUS
• MPI/PPI/PROFIBUS from 9.6 kbps to 12 Mbps
• For S7-200*, S7-300*, S7-400*

NETLink®-S7-NET, Communication driver for the NETLink product family

After completing the NETLink-S7-NET setup, the drivers fit into the existing interface hierarchy without any difficulties.
The parameters of supported devices must be set from within the configuration program Set PG/PC Interface (even when used with the TIA Portal*).

There are two configuration dialogs available:
- NETLink-S7-NET PRO Family is used with all NETLink® Ethernet models and identical adapters.
- NETLink-S7-NET USB is used with all NETLink® USB models and identical adapters.

S7 Manager and TIA Portal* on a 64-Bit environment only supports the Ethernet adapters of the NETLink® PRO family and the NETLink® USB models with the protocols MPI, PPI and PROFIBUS.

Resource Download

Quick Start Guide

Project Specific Interface

CPU to CPU comms

Example Architecture

Example Project CPU to CPU

Example Application

NetLinkPRO STEP7, TIA Portal Driver - PC PG interface