Vicom Systems FC-FC3 Bedienungsanleitung PDF herunterladen (Seite 56)

CONFIDENTIAL [AK8999A/AW/AD]

MS1600-E-00 2014/05

- 56 -

g) Pressure threshold detector 1 (EEPROM name: PTH1, HYS1)

The operating mode, the detection threshold values and the hysteresis voltage of the comparator for

the pressure threshold detector 1 are set up.

The detector threshold voltage and the hysteresis voltage vary ratiometrically with respect to the

supply voltage.

g.1) Pressure threshold detector operating mode setup

Address : 09 hex D[7:5] = EINV1[0], EINE1[0], EIN1L[0]

D[7:5] Symbol Mode setup

D[7] EINV1[0] Pressure threshold detector output polarity setup EEPROM

0 EINV11 High output when detected (default)

1 EINV10 Low output when detected

D[6] EINE1[0] Pressure threshold detector enabled setup EEPROM

0 INT1E Pressure threshold detector 1 enable (default)

1 INT1D Pressure threshold detector 1 disable

D[5] EIN1L[0] Pressure threshold detector 1 detection threshold setup EEPROM

0 INT1< Detect pressure above threshold (default)

1 INT1> Detect pressure below threshold

Address : 0B hex D[4] = EPTH1[0]

D[4] Symbol Mode setup

D[4] EPTH1[0] Pressure threshold detector 1 detection threshold selection EEPROM

0 PTH1R EEPROM setup (default)

1 PTH1E DET2/PTH pin external setup

g.2) Pressure threshold detector detection threshold adjustment

Address : 09 hex D[4:0] = EPT1[4:0]

EPT1[4:0] Detection threshold (V)

Description

Dec Hex Bin Detect threshold ex. VDD:5V

-16 10 10000 0.900*VDD 4.500

-15 11 10001 0.875*VDD 4.375

-14 12 10010 0.850*VDD 4.250

：：：：：

-3 1D 11101 0.575*VDD 2.875

-2 1E 11110 0.550*VDD 2.750

-1 1F 11111 0.525*VDD 2.625

0 00 00000 0.500*VDD 2.500 Default

1 01 00001 0.475*VDD 2.375

2 02 00010 0.450*VDD 2.250

：：：：：

14 0E 01110 0.150*VDD 0.750

15 0F 01111 0.125*VDD 0.625

g.3) Comparator hysteresis voltage adjustment for pressure threshold detection

Address : 0B hex D[1:0] = EHYS1[1:0]

EHYS1[1:0] Hysteresis voltage (mV)

Description

Dec Hex Bin Hysteresis voltage ex. VDD:5V

2 2 10 0.030*VDD 150.0

3 3 11 0.040*VDD 200.0

0 0 00 0.050*VDD 250.0 Default

1 1 01 0.060*VDD 300.0

1 2 ... 51 52 53 54 55 56 57 58 59 60 61 ... 67 68

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