MV6100COMI卡件备件,MV6100COMI工控PLC
输入/输出扩展概述
SST-PB3-CLX主机支持最多1984个输入字节和1968个输入/输出数据输出4个I/O页内的字节。开头为控制寄存器保留了4个字节每一页的。每个输入页为500字节，每个输出页为496字节。
主机通过写入来控制将哪个I/O页映射到ControlLogix I/O表ControlLogix输出表的字节1。要更改输入页，（使用WORD数据类型），更新字节1的下半字节（本地：2:O.Data[0]）。8–11，AOP标记本地：插槽：ModuleControl。将页码（0–3）更改为页码（0–3）。更改输出页面，更新字节1的上半字节（本地：插槽：O.Data[0]）。
MV6100COMI卡件备件12–15，AOP标记本地：插槽：ModuleControl。将页码（0-3）更改为页码（4-7）。更改输出页时，更新控制寄存器（本地：插槽：I.Data[0]）。12–15，AOP标记本地：插槽：ModuleControl。用输出页码和输出更改页码位4-7同步复制到ControlLogix输出之前，需要同时提供数据
更改输入页面后，主机应等待固件设置页码在输入表的字节1中（本地：插槽：I.Data[0]）。8–11，AOP标记本地：插槽：ModuleControl。当前页位0-3）。在输入表字节1的低半字节（本地：插槽：I.Data[0]）。8–11，AOP标记本地：插槽：ModuleControl。CurrentPage位0-3）等于输出表的低半字节字节1（本地：插槽：O.Data[0]。8–11，AOP标记本地：插槽：ModuleControl.ChangePage位0-3）。要检索或更新页面上的数据，请使用RsLogix 5000软件。使用CPS指令时，I/O更新无法在
您正在复制到本地缓冲区/从本地缓冲区复制。如果计划将所有使用的输入页读取到本地处理输入数据之前的缓冲区，下面是避免数据所需的示例逻辑撕裂。
I/O Expansion Overview
The SST-PB3-CLX master supports I/O data up to a maximum of 1984 input bytes and 1968
output bytes within 4 I/O pages. There are 4 bytes reserved for control registers at the beginning
of each page. Each input page is 500 bytes and each output page is 496 bytes.
The Host controls which page of I/O is mapped into the ControlLogix I/O table by writing to
Byte 1 of the ControlLogix output table. To change the input page, (WORD Data type is used),
update the lower nibble of byte 1 (Local:2:O.Data[0].8 – 11, AOP Tag
Local:Slot:ModuleControl.ChangePage Bits 0 - 3) with page number (0 – 3). To change the
output page, update the upper nibble of byte 1 (Local:Slot:O.Data[0].12 – 15, AOP Tag
Local:Slot:ModuleControl.ChangePage Bits 4 - 7) with page number (0 -3).
When changing Output Pages, updating the Control register (Local:Slot:I.Data[0].12 – 15, AOP
tag Local:Slot:ModuleControl.ChangePage Bits 4 - 7) with the output page number and output
data at the same time is required before doing a Synchronous Copy to the ControlLogix Output
table.
After changing the Input pages, the host should wait for the firmware to set the page number(s)
in byte 1 of the Input table (Local:Slot:I.Data[0].8 – 11, AOP tag
Local:Slot:ModuleControl.CurrentPage Bits 0 - 3). Input pages should not be read until the
Inpute table’s low nibble of byte 1 (Local:Slot:I.Data[0].8 – 11, AOP tag
Local:Slot:ModuleControl.CurrentPage Bits 0 - 3) is equal to the Output table’s low nibble of
byte 1 (Local:Slot:O.Data[0].8 – 11, AOP tag Local:Slot:ModuleControl.ChangePage Bits 0 - 3).
To retrieve or update the data on a page, use the CPS instruction (Synchronous Copy File) in the
RsLogix 5000 software. With the CPS instruction, an I/O update cannot change the data while
you are copying to/from the local buffer. If you plan to read all used input pages into a local
buffer prior to processing input data, below is sample logic that would be required to avoid data
tearing.
Note
