3-1
Section
Analog I/O Units
170
Analog Outputs
CPU Unit
Analog I/O Unit
Ladder program
MOVE instruction
Writes the range code
Writes the set value
Word (n + 1)
(See note.)
Analog devices
Adjustment equipment
Servo Controller
Variable speed device
Recorder
Other
Note
Word (n + 1) can be used for either the range code or the analog output set value.
Range code
Analog output set value
Where “n” is the last output word allocated to
the CPU Unit, or previous Expansion Unit or
Expansion I/O Unit.
(21)
The I/O signal range is set by wiring the I/O terminal and by writing the range
code to the Analog I/O Unit’s output word.
I/O Terminal Arrangement
Note
When using current inputs, short terminal V IN1 with I IN1
and terminal V IN2 with I IN2.
V OUT
Voltage output
I OUT
Current output
COM
Output common
V IN1
Voltage input 1
I IN1
Current input 1
COM1
Input common 1
V IN2
Voltage input 2
I IN2
Current input 2
COM2
Input common 2
Range Code
The range code must be set for the Analog I/O Unit to convert data.
The 8 range code settings provide 8 combinations of signal ranges for the ana-
log inputs and analog output, as shown in the following table.
Setting I/O Signal Range