DI830, DI831 no response to host controller
- Use Product Revision PR: J or later for DI830 and DI831.
The design has been changed to have more tolerant handling of component tolerances. This change is included in Product Revision PR: J and later.
No general upgrade of actual module types is recommended by ABB Automation Technology Products. When a module fails at first, according to the problem description, it shall be replaced directly.
[ref 3BSE033359 VASMASOITA0874 ]
- DI830, DI831 no response to host controller
Due to component tolerances, an internal timing problem may occur on rare occasions. The result is that the module does not respond to host controller messages (HW missing) and the communication is lost. The LEDs on module wrongly show normal operation. The Run LED is on and the Fault LED is off. The operator and the control application will be noticed by normal system alarm of module missing.
Failures are related to individual modules and show up within a short time of operation, normally during the period of commissioning.
DI830, DI831 all revisions up to PR: H