KEBA FM265A控制器,FM265A使用說明
同步和凍結(jié)是用于同步遠程輸入/輸出站的全局控制功能。您可以使用這些功能使一組從機在系統(tǒng)中同時運行。■ Sync命令用于控制從設備的輸出。當從設備接收到同步信號時命令時，它保留來自主服務器的最后一個輸出數(shù)據(jù)，直到從服務器接收到另一個同步主人的命令?！?凍結(jié)用于控制從機的輸入。當凍結(jié)命令發(fā)送到從設備時從設備凍結(jié)其當前輸入，并且在接收到另一個輸入數(shù)據(jù)之前不接受任何新的輸入數(shù)據(jù)凍結(jié)命令。
KEBA FM265A控制器同步/凍結(jié)控件是可選的，長度為兩個字節(jié)，默認值是映射到%Q中的第一個可用地址。同步/凍結(jié)控制可以映射到任何PLC內(nèi)存區(qū)域，如果映射到離散PLC內(nèi)存，則其長度必須為16位一個字（如果映射到字PLC內(nèi)存）（%AI、&AQ、%R）。要使用同步/凍結(jié)控件，需要指定組選擇和命令。注：Series 90-30 PROFIBUS Slave Module（IC693PBS201）不支持接收同步/凍結(jié)命令。同步/凍結(jié)控制字Bits名稱描述1–8（LSB）組選擇指定將此命令發(fā)送到哪個從屬組。每個從機可以在一個或多個組（0到7）中，這些組在從屬性對話框的參數(shù)選項卡。如果要向組ID為04的所有從機發(fā)送同步命令，則需要將0x04寫入從字節(jié)1開始的位置，將0x20寫入從字節(jié)9開始的字節(jié)位置要實際發(fā)送此命令，請切換命令的觸發(fā)位（字節(jié)16）。
Sync and Freeze are global control functions used to synchronize remote I/O stations. You can use
these functions to cause a group of slaves to operate at the same time in your system.
■ The Sync command is used to control a slave’s outputs. When a slave receives a Sync
command, it holds its last output data from the master until the slave receives another sync
command from the master.
■ Freeze is used to control a slave’s inputs. When a Freeze command is sent to a slave, the
slave freezes its current inputs and does not accept any new input data until it receives another
Freeze command.
The Sync/Freeze control is optional, two bytes in length, and the default is to map to the
first available address in %Q . The Sync/Freeze control can be mapped to any PLC
memory area and must have a length of either 16 bits if mapped to discrete PLC memory
(%Q, %I, %T, %M, %G) or, one word if mapped to Word PLC memory (%AI, &AQ, %R).
To use the Sync/Freeze control, you need to specify a Group Select and a command.
Note: The Series 90-30 PROFIBUS Slave Module (IC693PBS201) does not support
receipt of Sync/Freeze commands.
Sync/Freeze Control Word
Bits Name Description
1–8 (LSB) Group
Select
Specifies which group of slaves to send this command to. Each slave
can be in one or more groups (0 through 7), which are selected on
the Parameters tab of the slave Properties dialog box.If you wanted to send a SYNC command to all the slaves with group ID 04, you would
write 0x04 to the location starting at byte 1 and 0x20 to the byte location starting at byte 9.
To actually send this command, toggle the trigger bit of the command (byte 16).
