Base + 3

Write

Analog Input Gain

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit No.

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

Name

X

X

X

X

X

SCANEN

G1

G0

 

 

 

 

 

 

 

 

 

SCANEN

Scan mode enable:

 

 

 

 

 

 

1Each A/D trigger will cause the board to generate an A/D conversion on each channel in the range LOW – HIGH (the range is set with the channel register in Base + 2).

The STS bit (read Base + 3 bit 7) stays high during the entire scan.

0Each A/D trigger will cause the board to generate a single A/D conversion on the current channel. The internal channel pointer will increment to the next channel in the range LOW – HIGH or reset to LOW if the current channel is HIGH.

The STS bit stays high during the A/D conversion.

G1-G0 Analog input gain. The gain is the ratio of the voltage seen by the A/D converter and the voltage applied to the input pin. The gain setting is the same for all input channels.

When this register is written to, the WAIT bit (Read Base + 3 bit 6) will go high for 10 microseconds to indicate that the analog input circuit is settling. During this time an A/D conversion should not be performed because the data will be inaccurate. After writing a new gain setting, the program should monitor the WAIT bit prior to starting an A/D conversion.

After writing a new channel selection (Base + 2), the WAIT bit is also set, and the program must monitor it prior to starting an A/D conversion.

The channel and gain registers can be written to in succession without waiting for the intervening WAIT signal. Only one WAIT period must be observed between the last triggering condition (write to Base + 2 or Base + 3) and the start of an A/D conversion.

The following table lists the possible analog input ranges:

G1

G0

Gain

Unipolar Range

Bipolar Range

0

0

1

Invalid

±10V

0

1

2

0-10V

±5V

1

0

4

0-5V

±2.5V

1

1

8

0-2.5V

±1.25V

Prometheus CPU User Manual V1.44

Page 36

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Image 36
Diamond Systems PR-Z32-EA-ST, PR-Z32-E-ST user manual Base + Write Analog Input Gain, Scanen
Page 35 Page 37

PR-Z32-E-ST, PR-Z32-EA-ST specifications

The Diamond Systems PR-Z32-EA-ST and PR-Z32-E-ST are pioneering solutions in the realm of embedded computing systems, designed to meet the challenging demands of various industrial applications. These boards harness advanced technologies and a comprehensive feature set to ensure exceptional performance, flexibility, and reliability.

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Moreover, the PR-Z32-EA-ST and PR-Z32-E-ST support real-time operating systems (RTOS) and conventional operating systems such as Linux. This support provides developers with the flexibility to choose the best environment for their applications, whether they require real-time performance or full-fledged operating system features.

In conclusion, the Diamond Systems PR-Z32-EA-ST and PR-Z32-E-ST are formidable options for those seeking powerful, versatile, and reliable embedded computing solutions. With their advanced SoC architecture, flexible I/O options, extensive memory configurations, and environmental resilience, these boards are well-equipped to tackle the challenges of modern industrial applications.
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