KEYENCE DL-DN1 - Manual (Page 44)

3-2 I/O Communication
3-16 - DeviceNet Compatible Network Unit DL-DN1 User’s Manual (FD-MH) -
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(1) When the current value of a sensor amplifier is updated, the new value is entered
into the IN area via I/O communication.
If the current value is over range, under range, or invalid, the previous value is
retained without updating the current value. Use the value with the judgment value
property.
(2) The property of the current value is entered. If the current value of a sensor
amplifier is "over" (FFFF), "under" (----), or "invalid," the bit corresponding to the ID
number of that sensor amplifier flips to 1.
Rewriting a Setting Value of a Sensor Amplifier
Available setting values: Instantaneous flow rate setting 1 (P1), instantaneous flow
rate setting 2 (P2), temperature upper limit setting, temperature lower limit setting,
and integrated flow quantity setting 1
Device assignments: "Rewrite setting value" (page 3-12)
When rewriting any setting or parameter other than listed above, use the
procedure described in "Reading/Writing Settings or Status of a Sensor
Amplifier" (page 3-20).
This example changes the setting value (instantaneous flow rate setting 1) of ID01.
It assumes that the operating mode assigned to the device is 3-output mode.
(1) Write the new setting value in the "setting-value rewrite data. "For details of
writable ranges, see "Command Parameter List for FD-MH Series" (page 3-
24).
(2) Execute the "request to rewrite setting value" command (0 -> 1).
(3) After the setting value is rewritten, the "setting value rewrite complete" signal flips
from 0 to 1.
(4) If an error occurs during "setting value rewriting " on the sensor amplifier, the
"setting value rewrite error" signal flips from 0 to 1. (The output is an OR sum of
settings.) Check the value entered in the "setting-value rewrite data."
(5) When the "request to rewrite setting value" command is set to 0, the "setting value
rewrite complete" and "setting value rewrite error" parameters flip to 0.
Reference
PLC (1)
Setting-value rewrite data 1234h
Out area [m+4 to 5]
(2) (5)
Request to rewrite setting value
Out area [m+3] BIT 0
(3)
Setting-value rewrite complete
IN area [n+8] BIT 0
(4)
Setting- value rewrite error
IN area [n+7] BIT 0
Sensor amplifier
Setting-value 1234h
1
0
1
0
1
0