2/16/2023 9:54 PM | |
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684) |
Hello Eduardo; You shoud look up some of the excellent documents Siemens prepared for programmers trying to undderstand Step 7 functions, such as the IEC Timer SFB4 "TON". Look up Ch. 26,2 in the Systam and Standard Functions manual, it explains how OBs and SFC/SFB work: https://support.industry.siemens.com/cs/ca/en/view/109751826 For example, The parameters used for the control of SFB4 are descibed as: Nowhere are the EN/ENO signals shown in this table. That is where your mistake starts. Another option would be to follow this video, from the Siemens Youtube channel. It contains a great number of useful videos such as this one, they have proven useful to man rogrammers here Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 02/16/2023 21:59:44 |
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