KEYENCE DL-PD1 - Manual (Page 47)

3-5 Overview of PROFIBUS DP Communication
3-23 - PROFIBUS DP Compatible Network Unit DL-PD1 User's Manual (GT2) -
Execu
ting Communi
cat
ion
3
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
Sot 1
Bit 0 of the input octet 2
1
0
ON
OFF
(1)
Master
DL-PD1 (Sot 0)
Bit 1 of the input octet 1
Sensor amplifier
Output
High output of ID01
1
0
ON
OFF
(1)