A&D PD4000243 System Design of Hopper Scale, Operation and I/O Design, Design Example, Setup

6.3. System Design of Hopper Scale

6.3.1.Operation and I/O Design

In General, looking an old type hopper scale design, the simplest indicator only displayed weighing value, other system devices communicated the control signal with each I/O interface. And the key operation and monitoring the system separately were controlled.

The indicator AD-4402 has the I/O interface to control the system, sub-display to monitor system information, main display to display weighing data and keys to control the system in a unit.

The indicator is designed so as to be able to select arbitrary keys and terminals to control the system form front panel keys and the I/O interface with the menu function. And the function of keys and terminals can be designed in the same way.

The system information of sub-display can select at the function list.

6.3.2.	Design Example
Suppose that the I/O, keys and sub-display are as follows:
Supply start:		F1 key,	[0thf- 2] [6]
Emergency stop key:		F2 key,	[0thf- 3] [13]
Dribble signal (low power):		terminal B1,	[0utf- 1] [6]
Batch finish signal (low power):		terminal B2,	[0utf- 2] [14]
Not used recipe code at "Not used recipe sequence"			[5q f- 8]	[0]
Use default setting about sub-display			[5ub f 1]	[0]

Setup

Step	1	Enter the function list.
Step	2	Select the menu F1 key.([Function] - [Function setting] - [General] - [Other] - [F1 key])
Step	3	Select [6] of Batch start at F1 key and store it.
Step	4	Select [13] of Forced batch finish at F2 key and store it.
Step	6	Select the menu terminal B1.
		([Function] - [Function setting] - [Control I/O Function] - [Output] - [OUT (B1)])
Step	8	Select [6] of Dribble flow at terminal B1 and store it.
Step	9	Select [14] of Batch finish at terminal B2 and store it.
Step 10		Set [6] of "Not used recipe code" at Recipe sequence.
		([Function] - [Function setting] - [Sequence] - [Basic] - [Recipe mode])
Step 11		Select [0] of the default menu in the and store it.
		([Function] - [Function setting] - [General] - [Sub-display] - [Weighing display])
Step 12		Press the ESC key several times to return to the weinghing mode.

Operation and Response

When the F1 key is pressed, a batch weighing is started and terminal B1 works. When the F2 key is pressed, batch weighing is stopped.

When the target weight is got, terminal B2 is turned on.

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