62
Example Function Blocks for Data Exchange
Section 3-2
2.
If the above tag values are changed using CX-Process Monitor Plus when
the R/W setting is set to "Rd (
→
LCB)" and writing to the ITEM is enabled,
the link memory values in the user link table will be changed and as a result
the function block ITEM will be changed.
When making the setting, make sure that ladder program and function
block operations will not be adversely affected.
3-2
Example Function Blocks for Data Exchange
This section shows example function blocks that exchange data with Monitor
Plus. To explain the operation of the function blocks, the examples show how
to monitor the following kind of program from Monitor Plus.
A “main function block” and “monitor function block” are required to create a
block diagram for this example.
The following project provides the operations required in this example.
Basic PID
First-order
lag
Set Basic PID block's SP
value from Monitor Plus.
(See example 2-1.)
Use Constant Generator
(Block Model 166).
Set Basic PID block's Remote/Local
switch from Monitor Plus.
(See example 3-1.)
Use Internal Switch (Block Model 209) and
Contact Distributor (Block Model 201).
Monitor the Basic PID block's High MV
limit output (MHA) from Monitor Plus.
(See example 3-2.)
Use Internal Switch (Block Model 209)
and Contact Distributor (Block Model 201).
PV
(Feedback from
the whole system)
Monitor the First-order Lag block's
Y1 output from Monitor Plus.
(See example 2-2.)
Use Input Selector (Block Model 162).
Summary of Contents for CX-Process Monitor Plus 2
Page 1: ...CX Process Monitor Plus Ver 2 Cat No W428 E1 02 SYSMAC WS02 LCMC1 EV2 OPERATION MANUAL...
Page 2: ...WS02 LCMC1 EV2 CX Process Monitor Plus Ver 2 Operation Manual Revised January 2007...
Page 3: ...iv...
Page 5: ...vi...
Page 9: ...x...
Page 15: ...xvi Application Precautions 4...
Page 41: ...26 Basic Operating Procedure Section 1 2...
Page 243: ...228 Checking Configurations Section 5 7...
Page 267: ...252 Reading Writing Function Block ITEMs Appendix A...
Page 269: ...254 Differences between Trend Screens and Batch Trend Screens Appendix B...