Tricka90

Hello everybody. I need to learn PLC programming. I already have some experience with Ladder language and PLCSIM so now I need a real PLC to do more practice. I was going to buy the following unit: 6ES7211-1BE31-0XB0 http://www.eibmarkt.com/isroot/eibmarkt/Files/DatenblattE/NS6102812.pdf It has 6 Di, 4 DO (Relay) and 2 AI, that's more than enough for me to do some practice. Do you think it would be a good idea to buy it? Or maybe this PLC doesn't have some important component or device needed to work properly? (my company will give me the software). Thank you to anyone will help me. Have a nice day, Edoardo

Good morning. I have an S7-400H connected to 13 pressure transmitters. I need to read the 13 values for short periods of time (less than a minute) at a frequency of 5 times per second at least, and then save them to a PC (in order to transfer them to Microsoft Excel). This operation is very simple with TIA Portal, thanks to the straightforward Data Logging instructions. Unfortunately, S7-400H only works with Simatic Manager which makes the task way harder, judging from the information I found on the internet. What do you think is the simplest procedure to do that? Another option would be to simply just receive the 13 values to my PC via Modbus and save them using a logging software (PLC Logger seems appropriate). In fact, the PLC is already configured to constantly send the 13 values via Modbus, but the frequency is currently low: less than 2 times per second. Is it possible to increase that frequency? (Baudrate is currently set to 19200 bps. For my application I only need 16x13x5 = 1040 bps, so theoretically I am not asking too much performance). Thanks a lot to anyone will help. Have a nice day.

Can you please give me a very quick opinion?