Hardy HI 4050, User Manual

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118 Chapter 6
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NOT - the symbol for “NOT” in a Boolean Assignment Statement is “~”.
The Boolean tables are arrays of short (2-byte) integers. An individual Boolean variable in
the table is located by its word offset and its bit offset. Boolean tables are given 2 letter
names as follows:
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DI - is the DeviceNet input table.
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DO - is the DeviceNet output table.
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HI - is the Hardy input table.
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HO - is the Hardy output table.
DeviceNet input tables and output tables are mapped to physical external devices using a
DeviceNet configuration software like Rockwell Software’s RS NetWorx.
®
NOTE RS NetWorx
®
is a registered trademark of the Rockwell Corporation.
A Boolean variable is addressed with the syntax below:
[tablename][word offset].[bit offset]
Example: DI0.3 is bit #3 in the DeviceNet input table, word #0.
Example #3 Mapping an Network Input to a Local Output
If you have the Digital I/O card and you want a PLC to send yes/no instructions to an HI
4050, you will have to map the local output to a network input. Here is the process:
Step 1. From the Mapping page,
under Destination click on
the Control pull-down
menu and select Digital
Card Output (HO0.0).
Step 2. Click on the Select button
to set the Destination. The
DIO1(HO0.0)” address
appears on the left side of
the Assignment
Statement.