Keyence DL-PD1 Uživatelský manuál stáhnout pdf (Strana 47)

3-5 Overview of PROFIBUS DP Communication

3-23

- PROFIBUS DP Compatible Network Unit DL-PD1 User's Manual (GT2) -

Executing Communication

Communication Methods

The following describes how the master cyclically communicates with the DL-PD1

(cyclic communication).

• "Reading an output from a sensor amplifier" (page 3-23)

• "Entering an external input to a sensor amplifier" (page 3-24)

• "Reading comparator values (P.V. values) from sensor amplifiers" (page 3-25)

Reading an output from a sensor amplifier

Available outputs: High, Low, Go, HH, LL

This example shows how to read the High output from Slot 1 (ID01).

 In the monitor mode

(1) The output from the sensor amplifier entered into Bit 0 of the input octet 2 via cyclic

communication. (In the big endian format)

This example shows how to read the High output from the sensor amplifier ID01.

Point

To use the HH output and LL output, set "Special Output Setting" of

the sensor amplifier to "5-Output".

 In the I/O mode

(1) The output from the sensor amplifier entered into Bit 1 of the input octet 1 via cyclic

communication. (In the big endian format)

Output

High output of ID01

Sensor amplifier

Master

Slot 1

Bit 0 of the input octet 2

OFF

(1)

Master

DL-PD1 (Slot 0)

Bit 1 of the input octet 1

Sensor amplifier

Output

High output of ID01

OFF

(1)

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 71 72

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Keyence DL-PD1 Uživatelský manuál Strana 47