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Input / Output 4-5MN1928
4.3.2 Analog outputs
The four analog outputs are available on a range of pins, as shown in section 4.2.1.
H Four independent analog outputs.
H Output range: ±10VDC (±0.1%).
H Resolution: 12-bit (accuracy ±4.9mV).
H Output current: 10mA maximum.
H Update frequency: 10kHz maximum (factory default 1kHz).
MintMT and the Mint Motion Library use analog outputs Demand0 and Demand1 to control
servo drives. Demand outputs 0 and 1 correspond to servo axes 4 and 5 respectively. The
Demand2 and Demand3 outputs may be used as general purpose analog outputs. See the
DAC keyword in the MintMT help file.
The analog outputs may be used to drive loads of 1kΩ or greater. Shielded twisted pair cable
should be used. The shield connection should be made at one end only.
NextMove ES
Demand0
Demand
±100%
120k
30k
-
+
AGND
100pF
TL084
47R
c27
a30
Figure 4 - Analog output - Demand0 shown
NextMove ES
Demand0
AGND
13
12
MicroFlex /servoamplifier
AIN0+
AIN0-
Connect overall shield at
one end only
a32Shield
Servo
amplifier
±10VDC
demand
input
-
+
c27
a30
Figure 5 - Analog output - typical connection to a servo amplifier (Baldor MicroFlex shown)