3 cyclic communication 3-19 – KEYENCE DL-EP1 User Manual

Page 49

3-3 Cyclic communication

3-19

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- EtherNet/IP Compatible Network Unit DL-EP1 User’s Manual (GT2) -

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

Comparator values (P.V. values) are read from the IN area to which the ID number of

each sensor amplifier is assigned.

Device assignments:

"Monitor Data (84 Words (168 Bytes)) Assembly Instance

(Instance ID): 64H" (Page 3-9)

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

ID01, ID02, and ID03.
(1)When the comparator value of a sensor amplifier is updated, the new comparator

value is entered into the IN area via cyclic communication.

If the comparator value is correct, the parameter range is -199.9999 to 199.9999.
If the current value is over range, under range, or invalid, the previous value is

retained without updating the current value. Use the value with the comparator

value property.

(2)The properties of the comparator value (Current Value n Over Range (each bit of

IN area [6]), Current Value n Under Range (each bit of IN area [8]), and Current

Value n Invalid (each bit of IN area [10]) are 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 is set to 1.

*For the GT2 Series, the comparator value is stored in the current value 0.

PLC

(2)

Comparator value property
Each bit of IN [6, 8,10]

Comparator value of ID 01

1234

4567

6789

IN area [48 to 51]

Comparator value of ID 02

2345

5678

7890

IN area [52 to 55]

Comparator value of ID 03

3456

8901

IN area [56 to 59]

Sensor amplifier