XP8600
I/O Configurations
s
23
XP8600 Circuitry
The XP8600s D/A circuitry consists of two 12-bit AD7543 D/A convert-
ers, U3 and U4, and an LM324N quad op-amp chip, U1. The outputs of
the D/A converters are amplified, and resistor packs RP1 and RP2 allow
both current output and voltage output. The outputs appear on headers J1
and J2, and at Wago connector H1. The input comes on the PLCBus from
the program running on the controller.
Figure 3-3 illustrates the operation of the D/A conversion.
Figure 3-3. Schematic Illustration of D/A Conversion in XP8600
Capacitors C7 and C8 are normally not installed. Be sure to install C7 and
C8 for applications that operate at more than ~100 Hz.
J2
+
+
+
V+
V
U1A
SDI
/LD1
STB1
DAC1
OUT1
REF
V+
V
V+
V
C7
RP2B
R2
RP2A
U1D
I1
V1
+
+
+
V+
V
U1B
SDI
/LD2
STB2
DAC2
OUT2
REF
V+
V
V+
V
C8
RP2D
R3
RP2C
U1C
I2
V2
J1
RP1A
100 k
Ω
RP1B
100 k
Ω
RP1C
100 k
Ω
RP1D
100 k
Ω
2 k
Ω
2 k
Ω
2 k
Ω
2 k
Ω
10
Ω
10
Ω
330 pF
330 pF
Voltage
Current
Voltage
Current
Содержание XP8600
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