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WBE2-I-1-WIRE 1-Wire Extension Module/en: различия между версиями
WBE2-I-1-WIRE 1-Wire Extension Module/en (просмотреть исходный код)
Версия 15:23, 22 апреля 2021
, 3 года назадFuzzyBot переименовал страницу Wiren Board 6: Модуль расширения 1-Wire/en в WBE2-I-1-WIRE 1-Wire Extension Module/en без оставления перенаправления: Часть переводимой страницы Wiren Board 6: Модуль расширения 1-Wire.
(Новая страница: «The WBE2-I-1-WIRE module works worse on long lines than the W1-W2 ports on the Wiren Board 6.») |
FuzzyBot (обсуждение | вклад) м (FuzzyBot переименовал страницу Wiren Board 6: Модуль расширения 1-Wire/en в WBE2-I-1-WIRE 1-Wire Extension Module/en без оставления перенаправления: Часть переводимой страницы Wiren Board 6: Модуль расширения 1-Wire.) |
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| (не показано 6 промежуточных версий 1 участника) | |||
| Строка 48: | Строка 48: | ||
The WBE2-I-1-WIRE module works worse on long lines than the W1-W2 ports on the Wiren Board 6. | The WBE2-I-1-WIRE module works worse on long lines than the W1-W2 ports on the Wiren Board 6. | ||
==== | ====Reasons and detailed description==== | ||
Work features of the applied chip DS2484 and protection circuits are the causes. The protection circuit limits the signal fronts when the DS2484 active pullup is active. The DS2484 bus master mistakenly enables an active pullup on a long line at the time of data transfer (active low) by the sensors. | |||
The chip also has a small sampling time, which makes its operation more sensitive to the steepness of the fronts, and therefore to the length of the line. | |||
==== | ====Workarounds==== | ||
Use ports W1, W2 on the Wiren Board 6 when problems occur. | |||
Apply for a warranty replacement for a new version of the module. | |||
==== | ====Scheduled fix=== | ||
No plans. WBE2-I-1WIRE is out of production, the new module WBE2-I-1WIRE-V2 is planned, which does not have this problem. | |||