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Chapter 5
PCI-1712/1712L User’s Manual
Advantech Co., Ltd.
www.advantech.com
the PCLD-8712 screw terminal board. The trigger signal is TTL-
compatible.
q Analog Threshold Trigger
For analog input operations, an analog trigger event occurs when the
PCI-1712/1712L detects a transition from above a threshold level to
below a threshold level (falling edge), or a transition from below a
threshold level to above a threshold level (rising edge). User should
connect analog signals from external device or internal analog output
channel on board to external screw terminal ANA_TRG on the PCLD-
8712 screw terminal board.
On the PCI-1712/1712L, the threshold level is set using a dedicated 8-
bit DAC; the hysteresis is fixed at 50 mV. Using software, you can
program the threshold level by writing a voltage value to this DAC;
this value can range from -10 V to +10 V.
Analog Input Data Format
Table 5-2: Analog Input Data Format
Table 5-3: The corresponding Full Scale values for various Input
Voltage Ranges
edocD/A egatloVgnippaM
.xeH .ceD ralopinU ralopiB
h000 d0 0 2/SF-
hFF7 d7402 BSL1-2/SF BSL1-
h008 d8402 2/SF 0
hFFF d5904 BSL1-SF BSL1-2/SF
BSL1 6904/SF 6904/SF
niaG
ralpinU ralopiB
egnaR SF egnaR SF
5.0 A/N A/N V01± 02
1 V01~0 01 V5± 01
2 V5~0 5 V5.2± 5
4 V5.2~0 5.2 V52.1± 5.2
8 V52.1~0 52.1 V526.0± 52.1