Konica Minolta PCI-1712L 2 Analog Input Data Format, Voltage Ranges, q Analog Threshold Trigger

Models: PCI-1712L PCI-1712

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Chapter 5

the PCLD-8712 screw terminal board. The trigger signal is TTL- compatible.

qAnalog 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

 

A/D code

Mapping Voltage

 

 

 

 

 

Hex.

 

Dec.

Unipolar

Bipolar

 

 

 

 

 

000h

 

0d

0

-FS/2

 

 

 

 

 

7FFh

 

2047d

FS/2 - 1 LSB

-1 LSB

 

 

 

 

 

800h

 

2048d

FS/2

0

 

 

 

 

 

FFFh

 

4095d

FS - 1 LSB

FS/2 - 1 LSB

 

 

 

 

 

 

1 LSB

FS/4096

FS/4096

 

 

 

 

 

Table 5-3: The corresponding Full Scale values for various Input

Voltage Ranges

Gain

Uniplar

 

Bipolar

 

 

 

 

 

 

 

Range

 

FS

Range

 

FS

 

 

 

 

 

 

 

 

 

 

0.5

N/A

 

N/A

± 10 V

 

20

 

 

 

 

 

 

 

1

0 ~ 10 V

 

10

± 5 V

 

10

 

 

 

 

 

 

 

2

0 ~ 5 V

 

5

± 2.5 V

 

5

 

 

 

 

 

 

 

4

0 ~ 2.5 V

 

2.5

± 1.25 V

 

2.5

 

 

 

 

 

 

 

8

0 ~ 1.25 V

 

1.25

± 0.625 V

 

1.25

 

 

 

 

 

 

 

Advantech Co., Ltd.

– 39 –

PCI-1712/1712L User’s Manual

www.advantech.com

 

 

Page 51
Image 51
Konica Minolta PCI-1712L user manual 2 Analog Input Data Format, 3 The corresponding Full Scale values for various Input