KEYENCE DL-DN1 - Manual (Page 43)

3-2 I/O Communication
3-15
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- DeviceNet Compatible Network Unit DL-DN1 User’s Manual (FD-MH) -
Entering an external input into a sensor amplifier
Available outputs: Integration reset, flow rate hold reset, temperature hold reset
Device assignments: "External input" (page 3-10)
This example illustrates how to enter a flow rate hold reset input into the sensor
amplifier of ID01.
It assumes that the operating mode assigned to the device is 3-output mode.
(1) The device value in the OUT area which is assigned an external input request is
linked via I/O communication, so that the external input of the sensor amplifier is
turned on or off.
(2) The input status of the sensor amplifier can be checked with the external input
response.
Reading current values (instantaneous flow rate) from sensor amplifiers
Current values are read by reading the IN areas which are assigned the ID numbers
of sensor amplifiers.
Device assignments: "Current value (instantaneous flow rate)" (page 3-9)
This example illustrates how to read the current values from the sensor amplifiers of
ID 01, 02, and 03.
It assumes that the operating mode assigned to the devices are "3-output mode +
current value, without extension."
PLC (1)
External Input request
Out area [m+1] BIT 0
(2)
External Input response
IN area [n+5] BIT 0
Sensor amplifier
External Input
Integration reset input to ID 01
1
0
ON
OFF
1
0
PLC (2)
Current value property
Bits in IN area [n+4]
Current value of ID 01 1234 4567 6789
IN area [n+5 to 6]
Current value of ID 02 2345 5678 7890
IN area [n+7 to 8]
Current value of ID 03 3456 8901
IN area [n+9 to 10]
Sensor amplifier
Current value of ID 01 1234 4567 6789
Current value of ID 02 2345 5678 7890
Current value of ID 03 3456 8901
(1)