SAGEMCOM 252721117AC控制器
例如，如果TTR=20000 tbit，波特率=9.6 kbit/s，看門(mén)狗參數(shù)應(yīng)大于：20000*（1/9.6）*10=2084 ms。例如，開(kāi)關(guān)TTR=20000tbit，波特率=1.5 Mbit/s，則看門(mén)狗參數(shù)應(yīng)該大于：20000*（1/1500）*10=133 ms。下載期間的自動(dòng)計(jì)算禁止看門(mén)狗時(shí)間太短，并發(fā)出適當(dāng)?shù)木婊蝈e(cuò)誤消息*時(shí)隙時(shí)間時(shí)隙時(shí)間是主機(jī)必須等待事務(wù)響應(yīng)的最長(zhǎng)時(shí)間。它必須始終大于（>）MaxTsdr+TQUI+11+2+SafetyMargin（請(qǐng)參閱下面的MaxTsdr和TQUI），否則將生成編譯警告，并將該值設(shè)置為允許的最小值。設(shè)置過(guò)高可能會(huì)降低性能。PROFIBUS PA可能需要較長(zhǎng)的時(shí)隙時(shí)間設(shè)置。
For example, with
TTR = 20000 tbit and baud rate = 9.6 kbit/s, the watchdog
parameter should be greater than: 20000 * (1/9.6) * 10 = 2084 ms.
For example, witch TTR = 20000 tbit and baud rate = 1.5 Mbit/s,
the watchdog parameter should be greater than: 20000 * (1/1500)
* 10 = 133 ms. The automatic calculation during the download
prohibits a too short watchdog time and issues an appropriate
warning or error message.
*Slot time The slot time is the maximum time a master must wait for a
transaction response. It must always be greater than (>)MaxTsdr +
TQUI + 11 + 2 + SafetyMargin (see below for MaxTsdr and TQUI)
or a compilation warning will be generated and the value will be set
to the smallest one allowed. Setting it too high may slow down the
performance.
PROFIBUS PA may require long settings for the slot time.
