Entry type: Product note Entry ID: 4126252, Entry date: 08/27/1996
S5-115U, CPU 944B - New Revision Level A06
Concerns products with the Catalog Nos.: 6ES5 944-7UB11 CPU 944B, 96 Kbyte, 1 serial port 6ES5 944-7UB21 CPU 944B, 96 Kbyte, 2 serial ports _Reason for the change:_ Modules with revision level A05 manufactured in the period May to Nov. 1995 may enter STOP mode with QVZ (acknowledgement delay) due to wrong address accessing, in sporadic cases. The problem is restricted to modules that are accessed via the intelligent I/O / absolute address area (0000H to 0FFFH), or via page addresses (F400H to F7FFH). Affected modules have the following manufacturing stamps: C-F5..., C-F6..., C-F7..., C-F8..., C-F9..., C-F0..., C-FN..., _Upgrading:_ If the problem occurs with any of your modules please speak to your SIMATIC contact at your local Siemens office about an upgrade. -------------------------------
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