Omron NT620C, Operation Manual

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4-5 Section Graphs
138
•
Contact
This is a setting of a contact on the PC to which the Bit Memory Table is
assigned.
Symbol C Series PCs Allocated CVM1/CV Series PCs Allocated
DM Data Memory
f
Data Memory
f
CH Internal/Special Relay
f
Internal/Special Relay
f
TIM Timer Timer
CNT Counter Counter
HR Holding Relay
f
–
AR Auxiliary Relay
f
Auxiliary Relay
LR Link Relay
f
–
f
: OK : NG
The Auxiliary Relay area of CVM1/CV series PC is used exclusively for special
application in the system, and cannot be used for other application.
When the Data Memory (DM) is specified, a bit number (00 to 15) is also speci-
fied in conjunction with a channel number.
4-5 Graphs
The contents of the numeral memory tables of the NT620S/620C can be dis-
played as graphs as well as numeral data.
Three types of graph can be displayed: bar graphs, trend graphs, and broken line
graphs.
The display data of graphs is changed by changing the contents of numeral
memory tables.
For the actual method used to update the data of a currently displayed graph, see
“Upgrading Graphs (Changing the Contents of Allocated Words)” (page 211).
Graph settings are made when creating screen data using the support tool.
4-5-1 Bar Graph Functions
The bar graph function displays a value in a bar graph form as a percentage to
the specified value according to the contents of a numeral memory table. Up to
50 bar graphs can be registered in one screen.
•
Reference table
The numeral memory table used as the reference for the bar graph display can
be set.
The support tool has the “direct” and “indirect” options for the reference method
of the numeral memory table. However, the NT620S/620C recognizes the “di-
rect” method only.
The bar graph display cannot use hexadecimal numbers. If hexadecimal num-
bers are set in the reference numeral table, the bar graph cannot be displayed.
Use caution not to write hexadecimal numbers except the minus sign “F” to the
reference numeral table.
Bar Graph Attributes The following attributes can be set with the NT620S/620C for the bar graph dis-
play:
Use the support tool to make settings for the bar graph display when creating the
screen data.