Industry Online Support
Technical Forum
6/11/2009 9:34 PM | |
Joined: 9/28/2005 Last visit: 8/27/2024 Posts: 2957 Rating: (242) |
Hello, I think it has still 2 accu. Maybe its based on 4xx series, but firmware comes from 3xx series. Download this manual http://support.automation.siemens.com/WW/view/en/13206730 This is instruction list manual, with descriptions on registers, SFC, SFB and OB. Take a look at page 5. There is table "Validity range of the instruction list". All newest CPU 317-319 are listed in table. So all 3xx series has common firmware and 317-319 has only high speeds inherited from 4xx series. |
Best regards, |
|
6/12/2009 7:57 PM | |
Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (308) |
Hello, All system functions are described here: http://support.automation.siemens.com/WW/view/en/1214574 Be aware that system functions (SFC and SFB) are part of the operating system. They can not be loaded into the CPU. You can list with STEP7 in "online" all blocs of a CPU. If an SFB does not appear online, you will not be able to use it. In the instruction list manual, SFB31 is not listed in the list of SFB available in any S7-300 CPU. So I am afraid that you will not be able to use SFB31 in S7-300. |
Best regards |
|
Follow us on