User guide

3-5 Overview of PROFIBUS DP Communication
3-24
- PROFIBUS DP Compatible Network Unit DL-PD1 User's Manual (IL) -
Executing Communication
3
Entering an external input to a sensor amplifier
Available external inputs: PRESET, TIMING, RESET, error clear
This example shows how to enter the TIMING input from Slot 1 (ID01).
 In the monitor mode
(1) The output octet value to which an external input request was assigned is linked via
cyclic communication and the external input of the sensor amplifier is turned on or
off. (In the big endian format)
(2) You can check the input status of the sensor amplifier with the external input response.
 In the I/O mode
(1) The output octet value to which an external input request was assigned is linked via
cyclic communication and the external input of the sensor amplifier is turned on or
off. (In the big endian format)
(2)
(1)
Master
External input request
External input response
Sensor amplifier
External input
TIMING input of ID01
1
0
ON
OFF
1
0
Slot 1
Bit 1 of the output octet 0
Slot 1
Bit 1 of the input octet 2
Master
External input request
Sensor amplifier
External input
TIMING input of ID01
ON
OFF
1
0
DL-PD1 (Slot 0)
Bit 1 of the output octet 3
(1)