Mitsubishi Electric MELDAS C6 Interface Manual page 292

B con-
Signal name
tact
—
ANALOG OUTPUT
[Function]
An analog voltage can be output from the designated connector pins (see below) on the remote I/O
unit DX120/DX121 by setting designated data in the file registers.
[Operation]
"Analog voltage" signal (for speed control) can be output by setting signed binary data to the
corresponding file register.
The analog output interface is explained below.
File
Channel
register
(R)
A01 R100
A02 R101
A03 R102
A04 R103
<Relation of file register details and analog output voltage>
Analog output (V)
10
-4095 -1000 0
-2.44
-10
<Relation of file register details and output voltage>
15 14 13 12
2 2 2 2
1 1 1 1
The data is input as binary coded data.
6. EXPLANATION OF INTERFACE SIGNALS
6.4 PLC Output Signals (Data Type: R***)
Signal
abbreviation
AOn
Remote I/O unit DX120/DX121 output destination
Channel setting switch is set to 1st card B04, A04 (Common)
Channel setting switch is set to 3rd card B04, A04 (Common)
Channel setting switch is set to 5th card B04, A04 (Common)
Channel setting switch is set to 7th card B04, A04 (Common)
File register details
4095
Rn n = 100~103
11 10 9 8 7 6
2 2 2 2 2 2
1 1 0 0 0 0
1st system
R100~103
(1) Output voltage
Resolution
Load conditions
Output impedance : 220ohm
Output voltage =
5 4 3 2 1 0
2 2 2 2 2 2
0 1 1 0 0 0
6-4-2
2nd system 3rd system
— —
: -10V~+10V (±5%)
12
: 2 (1/4095) × Fullscal
: 10kohm resistance load
(standard)
-1000
× 10V = -2.44V
4095
The output voltage is
When -1000
(FC18 with hexadecimal)