B&B Electronics ZZ24D-NA(NB,NC,ND)-SR - Manual - Manual (Page 96)

Appendix I: Convert Voltage to DAC
90 Manual Documentation Number: pn7515_ZlinxIO-0712m
A A p p p p e e n n d d i i x x I I : : C C o o n n v v e e r r t t V V o o l l t t a a g g e e t t o o D D A A C C
1. Going from Voltage to Modbus Holding Register value:
Voltage Full Range = 10VDC
DAC full range is 4096 counts, 4096
Voltage Desired * 4096/10 = Holding Register Value to Send
2. Going from Current to Modbus Holding Register value:
Current Full Range = 20mA
DAC full range is 4096 counts, 4096
Current Desired * 4096/20 = Holding Register Value to Send
3. Going from Modbus Input Register to Voltage value:
Voltage Full Range = 10VDC
DAC full range is 4096 counts, 4096
Input Register * 10/4096 = Voltage Value
4. Going from Modbus Input Register to Current value:
Current Full Range = 20mA
DAC full range is 4096 counts, 4096
Input Register * 20/4096 = Voltage Value