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3-2 I/O Communication

3-17

Communicating with the SK-1000 Series

- DeviceNet Compatible Network Unit DL-DN1 User’s Manual (SK-1000) -

Reading comparator values (P.V. values) from sensor amplifiers

Comparator values (P.V. values) are read by reading the IN areas which are assigned

the ID numbers of sensor amplifiers.

Device assignments: "Comparator value (P.V. value)" (page 3-10)

This example illustrates how to read the comparator values from the sensor amplifiers

of ID 01, 02, and 03.

It assumes that the operating mode assigned to the devices are "3-output mode +

current value, no extended."

(1)When the comparator value of a sensor amplifier is updated, the new comparator

value is entered into the IN area via I/O communication.

(2)The property of the comparator value is entered. If the comparator value of a

sensor amplifier is "over," "under," or "invalid," the bit corresponding to the ID

number of that sensor amplifier flips to 1.

PLC

(2)

Comparator value property

Each bit of IN [n+4]

Comparator value of ID 01

1234 4567 6789

IN area [n+5 to 6]

Comparator value of ID 02

2345 5678 7890

IN area [n+7 to 8]

Comparator value of ID 03

3456 8901

IN area [n+9 to 10]

Sensor amplifier

Comparator value of ID 01

1234 4567 6789

Comparator value of ID 02

2345 5678 7890

Comparator value of ID 03

3456 8901

(1)

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