Konica Minolta PCI-1712L A/D Single Value Acquisition Write BASE+0, Data of A/D Conversion

APPENDIX D

D.3 A/D Single Value Acquisition — Write BASE+0

The A/D converter will convert one sample when you write to the register Write BASE+0 with any value. User can check the A/D FIFO status (A/D_F/E on register Read BASE+8) to make sure if the data is ready to be received.

D.4 Channel and A/D data — Read BASE + 0

These two bytes in Read BASE+0 hold the result of A/D conversion data.

The 12 bits of data from the A/D conversion are stored in bit 0 to bit 11, bit 12 to 14 hold the A/D channel number and bit 15 holds the trigger event flag.

Table D-2: Register for channel number and A/D data

Base Add.		15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
0	R							Channel and A/D data
		AF	CH2	CH1	CH0	AD11	AD10	AD9	AD8	AD7	AD6	AD5	AD4	AD3	AD2	AD1	AD0
AD11 TO AD0						Data of A/D Conversion
	AD0					the least significant bit (LSB) of A/D data.

AD11 the most significant bit (MSB) of A/D data.

CH2 to CH0 A/D Channel Number

CH2 ~ CH0 hold the A/D channel number from which the data is received.

CH2 MSB.

CH0 LSB.

Note:

✎A/D channel number specifies the channel from which data is derived. CH2 is the MSB and CH0 is the LSB. For channel scan, there should have 4 channel codes, specifically from CH0 to CH3. Because we have not enough address space, bit 15 is used for other purposes instead for CH3, which is hence not available..

AF A/D trigger event flag

The trigger flag indicates whether a trigger event has happened during A/D conversion process.

Advantech Co., Ltd.	– 83 –	PCI-1712/1712L User’s Manual
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