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Example Function Blocks for Data Exchange
Section 3-2
3-2 Monitoring a Contact (Bit)
Example: Monitoring the Basic PID block’s High MV Limit Output (MHA) from
Monitor Plus
The following steps are required to monitor a bit’s status.
1,2,3...
1.
Use the Contact Distributor (Block Model 201) to temporarily store the
function block’s bit status in the Loop Control Unit or Board’s memory.
2.
Use the Internal Switch (Block Model 209) to read the temporarily stored
data from memory and write it to the CPU Unit’s data area.
3.
Set the tag for Monitor Plus (used to monitor the bit from Monitor Plus) in
the Internal Switch’s bit. In this case, S2’s tag name is set to MHA.
Actual Setting Procedure
The following settings are used to monitor a bit’s status from Monitor Plus.
Monitor Plus
Loop Control Unit or Board
Internal
Switch
(Block
Model
209)
Set tags for Monitor Plus.
(Select
Display
to read data.)
Function
block
Function
block
Specify the tags
for Monitor Plus
and write data.
CPU Unit
Contact
Distributor
(Block
Model 201)
I/O memory
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...