Omron SYSMAC CS Series Operation Manual page 82

Configuration of Instrumentation System
Connecting to CX-Process Tool
Transferring Data to
and from SCADA
Software
Read and Writing Control,
Operation, and External
Controller Block ITEMs
(HMI Data)
Read and Writing Other
Data
50
2. Do not write to the same I/O memory addresses when exchanging data
between the Loop Controller and the CPU Unit.
CPU Unit
Peripheral port or RS-232C port
Loop Control Board
The Loop Controller achieves all functions by combining function blocks.
Function block data must be prepared on CX-Process Tool and then down-
loaded to the Loop Controller for use.
The tag settings for SCADA software must also be prepared on CX-Process
Tool.
CX-Process Tool runs on a computer that is connected to the peripheral port
or RS-232C port of the CPU Unit. (The Host Link can be used in the serial
communications mode but not on the Peripheral bus.)
CX-Process Tool is installed on a computer on which the Controller Link Sup-
port Board is mounted, and function block data can be downloaded from CX-
Process Tool to the Loop Controller via the Controller Link.
The following methods can be used to read and write Loop Controller data
with commercially available SCADA software.
Reading Data
The HMI function is used to transfer specific ITEMs (HMI data) in Control
Blocks, Operation Blocks, and External Controller Blocks to the specified
words in I/O memory in the CPU Unit. SCADA software is then used to read
the data from the I/O memory of the CPU Unit.
Writing Data
SCADA software is used to write data to words in the I/O memory of the CPU
Unit. The HMI function is then used to transfer specific ITEMs (HMI data) in
Control Blocks, Operation Blocks, and External Controller Blocks from the
specified words in I/O memory to the Loop Controller.
Reading Data
User link tables are used to transfer the specified ITEMs in to specified words
in I/O memory in the CPU Unit. SCADA software is then used to read the data
from the I/O memory of the CPU Unit.
Writing Data
SCADA software is used to write data to words in the I/O memory of the CPU
Unit. User link tables are then used to transfer the specified ITEMs from the
specified words in I/O memory to the Loop Controller.
Function block data prepared on
CX-Process Tool running on
computer
Function block
data
Section 1-2