GitHub user zhy1378 added a comment to the discussion: How do I configure the PLC memory address to start at 0 instead of 1 when using PLC4j Modbus-TCP?
Hi, thanks for your answer. Your suggestion is what I am doing right now - using address 1 as the starting address instead of 0. Arrays and lists begin at 0, not 1, in most programming languages. I have been programming for over 10 years before using PLCs and Modbus-TCP, and having addresses start at 0 aligns better with my experience. Even though the Modbus specification defines 1 as the starting address, stopping the check for non-zero addresses would likely work better in this situation and provide more compatibility. Do you agree? While the Modbus standard specifies starting at 1, allowing a starting address of 0 seems more intuitive for those with a programming background. Disabling the address validation would enable full compatibility with PLCs like Siemens that start addressing memory at 0. Given my background, starting addresses at 0 feels more natural as well. What are your thoughts on disabling the address check? GitHub link: https://github.com/apache/plc4x/discussions/1330#discussioncomment-8074254 ---- This is an automatically sent email for dev@plc4x.apache.org. To unsubscribe, please send an email to: dev-unsubscr...@plc4x.apache.org
