Allen-Bradley Point Configuration

When you define a point, the following fields have values that are unique to or have special meanings for the Allen-Bradley Communications enabler.

General Tab

On the General tab in the Point Properties dialog box, you may configure points for Read or Read/Write access.

When you are reading / writing data between CIMPLICITY software and a Floating Point file (F), define CIMPLICITY points using the REAL data structure type.

When you are configuring array points, make sure that the size of the array is within the limits of the file. CIMPLICITY software does not declare an array configured beyond the end of a file as invalid.

Device Tab

On the Device tab in the Point Properties dialog box.


Field	Description
Address	Point address requirements are device dependent. Valid devices are: PLC-2 PLC-3 PLC-5 PLC-5/250 SLC-5/04


Update Criteria	The update criteria determine how the data will be requested.
	Enter	For
	On Poll or On Scan	Points whose values should be polled by the Allen-Bradley Communications enabler at regular intervals.
	On Demand On Poll or On Demand On Scan	Points whose values should be polled by the Allen-Bradley Communications enabler at regular intervals while users are displaying them.
	Unsolicited	Points that will accept unsolicited criteria.
	Poll Once	Points that are to be polled once when the Allen-Bradley Communications enabler starts.

When you are configuring Boolean points, you must also enter data in the following field:

Bit Offset: Enter the bit offset that corresponds to the bit position within the word. The valid range for bit offset is 0–15 where 0 is the least significant bit. The bit offset must be specified as a decimal value.