User`s manual

Exp-A/D1260 s I/O Configurations
Exp-A/D12 Pin Assignments
The Exp-A/D12s eight 12-bit analog-to-digital converter channels are
accessed through Wago Connectors H1 and H2, as shown in Figure 7-1.
Figure 7-1. Exp-A/D12 Wago Connectors H1, H2, and H3
Wago connector H5 provides excitation voltages for devices connected to
the Exp-A/D12. The +24 V (or +12 V) from the PLCBus and EX1/EX4
voltages associated with resistor networks are also accessible through the
Wago connectors.
Using Analog-to-Digital Converter Boards
These steps summarize how to use the A/D converter boards.
1. Send a reset command to all boards on the PLCBus.
2. Place the address of the A/D converter board on the PLCBus.
3. Read an input channel, allowing time for the multiplexer to settle and
for the digital output to be determined.
4. Allow the controller to use the digital information to calculate a
meaningful value for the quantity measured.
5. Use the data to control relays, switches, or other devices with the
controller.
These steps rely on software drivers in Dynamic C function libraries. Use
DRIVERS.LIB and PLC
_
EXP.LIB for controllers with a PLCBus port.
H1 H2 H5
GND
EX1
AN0
EX4
GND
V–
VREF
VCC
V+
DCIN
+–
AN1
+–
AN2
+–
AN3
+–
AN4
+–
AN5
+–
AN6
+–
AN7
+–