Phoenix Contact 2701027 NLC-050-024D-06I-04QTP-00A nanoLine Base Unit 24ßV/DC / PNP 2701027 Data Sheet
Product codes
2701027
Getting Started and Tutorial
2373_en_B
PHOENIX CONTACT
2-49
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Select the “File... Open Flow Chart... “ menu, and then select a flow chart from the
cascade menu.
2.8.4
Verifying a Project
In addition to viewing flow charts with their execution track and data item values as they
change dynamically, nanoNavigator can force data values to cause flow chart execution to
take different paths. Another important tool to verify and correct projects is the ability to
cross-reference all locations where a data item appears in the project. This section shows
how to use these two important tools.
Forcing Data Items
nanoNavigator can force input, output, and flag data items. When a data item has a forced
value, the value won’t change due to different input states or under program control. This
provides a valuable capability to verify a project
.
Use the “nanoLC Monitor” window (see Figure 2-35 on page 2-47) to force data item values
with either the “Flow Charts” or “Blocks” tab. To force a data item value, follow these steps:
1.
With the project running and in Monitor mode, view the “nanoLC Monitor” window.
2.
Using either the “Flow Charts” or “Blocks” tab, right-click anywhere in the row of the data
item to force.
3.
Table 2-6 list the force options available depending on the type of data item.
Using the “nanoLC Monitor... Forces” tab permits viewing all forced items (see Figure 2-37).
Be sure to remove all forces before running a project in a production environment.
Table 2-6
Force options available depending on data item type
Type of Data Item
Setting
Description
Input
Force ON
Sets the Input bit ON (see “Forcing Data
Force OFF
Sets the Input bit OFF (see “Forcing Data
UnForce
Removes Force setting.
Outputs and Flags
Turn ON
Sets the output or flag bit ON. The value
can change under program control.
Turn OFF
Sets the output or flag bit OFF. The value
can change under program control.
Force ON
Sets the output bit or flag ON (see “Forcing
Force OFF
Sets the output bit or flag OFF (see “Forcing
UnForce
Removes Force setting.
Registers and
Timer/Counters
Set Value
Displays a pop-up dialog box that permits
setting a value for the register or
timer/counter.
Zero Value
Sets the register or timer/counter to zero.