KEBA FM265A控制器,FM265A使用说明
同步和冻结是用于同步远程输入/输出站的全局控制功能。您可以使用这些功能使一组从机在系统中同时运行。■ Sync命令用于控制从设备的输出。当从设备接收到同步信号时命令时，它保留来自主服务器的最后一个输出数据，直到从服务器接收到另一个同步主人的命令。■ 冻结用于控制从机的输入。当冻结命令发送到从设备时从设备冻结其当前输入，并且在接收到另一个输入数据之前不接受任何新的输入数据冻结命令。
KEBA FM265A控制器同步/冻结控件是可选的，长度为两个字节，默认值是映射到%Q中的第一个可用地址。同步/冻结控制可以映射到任何PLC内存区域，如果映射到离散PLC内存，则其长度必须为16位一个字（如果映射到字PLC内存）（%AI、&AQ、%R）。要使用同步/冻结控件，需要指定组选择和命令。注：Series 90-30 PROFIBUS Slave Module（IC693PBS201）不支持接收同步/冻结命令。同步/冻结控制字Bits名称描述1–8（LSB）组选择指定将此命令发送到哪个从属组。每个从机可以在一个或多个组（0到7）中，这些组在从属性对话框的参数选项卡。如果要向组ID为04的所有从机发送同步命令，则需要将0x04写入从字节1开始的位置，将0x20写入从字节9开始的字节位置要实际发送此命令，请切换命令的触发位（字节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).
