You now seem to know that the analog sensors will provide a 0-10V signal. You already have most of the answers in the post above, please take them one step at a time. To answer the basic question: can you setup 10 analog inputs and outputs on a s7-315-2DP, the answer is yes, very easily. You use the function FC105 'SCALE' to convert the integer values (INT) intoĪnd finally, for a complete tutorial on analog value processing, open the following link, and look at this module How and for which analog measurements can Look at the chapters on Analog representation and modules for detailes information on the hardware and configurations available for a S7-300. In the mean time here is a bit of information for you. when you are rady to program it we can also help you. There is a standard block for this in the Siemens program Library, FC 105 "SCALE". That is 4 mA will become a value 0, 20 mA will be represente dby the number 26748, will all values in between being proportionnal to this range.īut 0-27648 does not mean much to you. The PLC analog input card uses an electronic circuit named an A/D converter (analog-to-digital) to transorm this into a numerial value 0-27648. Say your sensor provides a 4-20 mA signal to the PLC. finally, converting the raw values that the input sensors provide to the analog input module into engineering values that actually mean something to your project. connecting the sensors properly to the selected analog input card, respecrting shield and ground connections (again based on the documentation for the analog module). You must find the appropriate documentation for your analog input module 9we can help you there). This will often require some kind of configuration, either through the wiring, the positionning of a range module (on the side of the analog input card) or parametrization in the HJWConfig editor. choosing the correct analog input card for your PLC, one that supports the analog signal provided by your sensor.
selecting the appropriate sensors for your application, and determininig the type of analog signal that will be used to connect to the PLC (0-20 mA, 4-20 mA, 0-10V +/- 10 V.). It may be suggested to replace the affected object with an alternative product.ĬVSSv3 info edit VulDB Meta Base Score: 5.Setting up and programming analog input sensors requires a few steps: There is no information about possible countermeasures known. This vulnerability is assigned to T1552 by the MITRE ATT&CK project. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment ( estimation calculated on ). The technical details are unknown and an exploit is not available. The exploitation doesn't require any form of authentication. It is possible to launch the attack remotely. The exploitability is told to be difficult. This vulnerability is traded as CVE-2020-15791 since. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials. The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl.
CVE summarizes:Ī vulnerability has been identified in SIMATIC S7-300 CPU family (incl. This is going to have an impact on confidentiality. The manipulation with an unknown input leads to a information disclosure vulnerability (Password). A high score indicates an elevated risk to be targeted for this vulnerability.Ī vulnerability classified as problematic has been found in Siemens SIMATIC S7-300 CPU and SIMATIC S7-400 CPU ( SCADA Software) ( version unknown). The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks.
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