ABB 3BSE018198R1 TP858 DDCS接口模块底板

ABB 3BSE018198R1 TP858 DDCS接口模块底板

TP858 3BSE018138R1通过设置计数位=0并选择计时器。这与使用多定时器锁存器相同命令。同样，每个计时器的锁存计数将保持到读取为止。Read Back命令也可用于通过设置状态位=0并选择计时器。

GFD563A101 3BHE046836R0101计时器的状态通过读取来访问计时器。如果有多个计时器状态读回在未读取状态的情况下发出命令，忽略除第一的所有命令。

Read Back命令允许用户查看计时器计数、计时器模式、OUT引脚的当前状态和所选定时器的负载标志。就像一个控制字，读回命令写入控制字寄存器，并格式如表4-7和4-8所示。该命令适用于计时器通过设置相应的位Cnt2、Cnt1、Cnt0=1来选择，位D7包含定时器输出引脚的状态。

6104-WA-PDPM这允许查看计时器的通过软件输出pin。位D6表示写入计时器的计数实际加载的时间登记加载的准确时间取决于计时器所处的模式在“模式定义”部分中定义。无法从计时器中读取计数直到加载完毕。如果在此时间之前读取计数，则读取的值不会新计数刚刚写入。

TP858 3BSE018138R1 by setting the count bit =0 and selecting the timer. This is the same command as using a multi-timer latch. Again, the latch count for each timer is held until it is read. The Read Back command can also be used to select a timer by setting the status bit =0.

GFD563A101 3BHE046836R0101 Timer Status Access the timer by reading it. If multiple timer states read back to issue commands without reading the state, ignore all but the first command.

The Read Back command allows the user to view the timer count, the timer mode, the current state of the OUT pin, and the load flag of the selected timer. Just like a control word, the read back command writes to the control word register, and the format is shown in Table 4-7 and 4-8. This command is applicable to timer selection by setting the corresponding bits Cnt2, Cnt1, Cnt0=1, bit D7 contains the state of the timer output pin.

6104-WA-PDPM This allows viewing the timer's output pin through the software. The bit D6 represents the count written to the timer The actual loading time The exact time of the registration load depends on the mode the timer is in is defined in the "Mode Definition" section. The count cannot be read from the timer until it is loaded. If the count is read before this time, the value read will not be the new count just written.