Owner's manual

3-17
- PROFIBUS DP Compatible Network Unit DL-PD1 User's Manual (IB) -
Executing Communication
3
3-5 Overview of PROFIBUS DP Communication
The DL-PD1 enables you to read or write various settings and conditions of the sensor
amplifier via PROFIBUS DP.
Examples are shown below.
* When the DL-PD1 operation mode is the I/O mode
• When the master is Class 1, the DP-V1 service cannot be used.
• When the master is Class 2, the DP-V1 service can be used.
"Operation mode of DL-PD1" (page 3-6)
For the list of data that can be read or written over the cyclic communication, see
"Device maps" (page 3-18). For the list of data that can be read or written with the DP-
V1 service, see "DP-V1 Service" (page 3-26).
Cyclic communication
Information and addresses assigned as the DL-PD1 cyclic communication data differ
depending on the DL-PD1 operation mode. When the DL-PD1 operation mode is the I/O
mode, the cyclic communication data assignment is fixed regardless of the connected
sensor amplifier. When the DL-PD1 operation mode is the monitor mode, assigned
information or addresses differ depending on the number and type of the connected
sensor amplifiers.
"Operation mode of DL-PD1" (page 3-6)
The storage format for 2byte data can be changed on the DL-PD1 parameter settings.
(In this example, data arrangement is shown in the big endian format.)
"Parameterization" (page 3-8)
Item
Cyclic communication
DP-V1
Service
*
Reference
page
I/O
Mode
Monitor
Mode
Reading the sensor amplifier control output

3-18
Executing the external input to the sensor amplifier

3-18
Reading the sensor amplifier comparator value

3-25
Warning if the sensor current value decreases

3-30
Changing the sensor amplifier setting value

3-30