Advantech PCI-1731 Spécifications télécharger pdf (Page 47)

APPENDIX C

PCI-1711/1731 User’s Manual

Advantech Co., Ltd.

www.advantech.com

– 43 –

PCI-1711/1731

Gain Input Range(V)

Gain Code

G2 G1 G0

1-10 to +10 000

2-5 to +5001

4 -2.5 to +2.5 0 1 0

8 -1.25 to +1.25 0 1 1

16 -0.625 to +0.625 1 0 0

Write A/D channel range setting

Bit # 7 6 5 4 3 2 1 0

BASE+2 G2 G1 G0

C.5 A/D Channel Range Setting — BASE+2

Each A/D channel has its own input range, controlled by a gain code

stored in the on-board RAM.

To change the range code for a channel:

l Write the same channel in BASE+4 (the start channel) and BASE+5

(the stop channel) (refer to Section C.6).

l write the gain code to BASE+2 bit 0 to bit 2.

Table C-3 Register for A/D channel range setting

where G2 to G0 are Gain Codes and table C-4 lists the gain codes

for the PCI-1711/1731.

Table C-4 Gain codes for PCI-1711/1731

Example: To set channel 3 as gain=1

1. Write channel 3 to BASE+4 as 00000011.

2. Write channel 3 to BASE+5 as 00000011.

3. Refer to the gain code list, write gain=1 to BASE+2 as 00000000.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 59 60

Pas de commentaire

Advantech PCI-1731 Spécifications Page 47