Wiring For Analog Outputs; Allocating Output Words - Omron CP1L-EL20DR-D Operation Manual

Analog Output Units
Note

Allocating Output Words

Writing Set Data

■ Wiring for Analog Outputs

2-core shielded
twisted-pair cable
V OUT
Analog
I OUT
output
COM
unit
(1) Connect the shield to the FG terminal to prevent noise.
(2) Separate wiring from power lines (AC power supply lines, high-voltage
lines, etc.)
(3) When there is noise in the power supply line, install a noise filter on the
input section and the power supply.
(4) When external power is supplied (when range codes are set), or when
the power is interrupted, there may be a pulse status analog output of up
to 1 ms. If this status is a problem, take the following measures.
• Turn ON the power to the CP1L-EL/EM CPU Unit, check the operation
status, and then turn ON the power at the load.
• Turn OFF the power to the load and then turn OFF the power to the
CP1L-EL/EM CPU Unit.
3. Creating the Ladder Program
Four output words (n+1 to n+4) are allocated, beginning from the first word
following the last I/O word allocated to the CPU Unit or already-connected
Expansion I/O Unit or Expansion Unit. For CP1W-DA021, two output words
(n+1, n+2) are allocated.
CP1W-DA041/DA042
Analog Output Unit
Words n+1 to n+4
Write the output use and the range code to words n+1 and n+2. For CP1W-
DA021, only word n+1 can be used. The D/A conversion will start when the
set data is transferred from the CPU Unit to the Analog Output Unit.
15
Wd (n+1)
1
15
1
Wd (n+2)
+
Analog
Analog
device
with
output
− voltage
unit
input
FG
0 8 7
0 0 0 0 0 0 0
Even if analog outputs are not
Analog output 2
used, bits 15 in words n+1
and n+2 must be set to 1.
0 8 7
0
0 0 0 0 0 0
Even if analog outputs are not
Analog output 4
used, bits 15 in words n+1
and n+2 must be set to 1.
Section 9-3
2-core shielded
twisted-pair cable
+
V OUT
Analog
device
I OUT
with
−
current
COM
input
FG
6 5 4 3 2 1
Analog output 1
6 5 4 3 2 1
Analog output 3
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