Good morning all, I'm not new to the forum, but this is the first time a write a topic. I've used several times the samples I downloaded from the Omron section but I've got a problem I can not solve with my knowledge. My question is: our customer has this configuration: - CPU : Siemens Simatic S7 313C (6ES7313-5BG04-0AB0) - CP : Ethernet module - CP 343-1 Lean (6GK7343-1CX10-0XE0) I need to read and write data from/to the cpu but I can not understand how. The Plc technician (i'm a erp developer) told me I can use tcp/ip and gave me a document where I can see how the memory of the cpu is managed and where I need to write the commands, but I cannot figure out how to do it. For example: I need to write in DB513.DBW0 an int value from 0 to 9. How can I say to tcp protocol the right place where to write? I read lots of documentation and saw lots of sample, I found lots of projects using Modbus, but really don't know how to proceed. I need to use a standard tcp/ip protocol or a modbus or what else? Thank you in advance for the help, this is very urgent to us. P
