Communication methods, Communication methods -15 – KEYENCE DL-DN1 User Manual
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3-2 I/O Communication
3-15
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- DeviceNet Compatible Network Unit DL-DN1 User’s Manual (SK-1000) -
The following describes how the DeviceNet master unit communicates with the DL-
DN1 (slave unit) using I/O communication (polling).
"Reading an output from a sensor amplifier" (page 3-15)
"Entering an external input into a sensor amplifier" (page 3-16)
"Reading comparator values (P.V. values) from sensor amplifiers" (page 3-17)
"Changing the BANK number of sensor amplifiers" (page 3-18)
"Rewriting a setting value of a sensor amplifier" (page 3-19)
For the communication methods using explicit messaging, see
Reading an output from a sensor amplifier
Available outputs: HI, LO, GO, and alarm output
Device assignments:
This example reads the HI output from the sensor amplifier of ID01.
It assumes that the operating mode assigned to the device is 3-output mode.
(1) The output from the sensor amplifier is brought into the IN area by I/O
communication.
Communication Methods
PLC
Output of sensor amplifier
IN area [n+1]Bit0
Sensor amplifier
(1)
Output
HI output of ID 01
1
0
ON
OFF