ComputerBoards CIO-DAS801, Руководство пользователя

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Table 3-1. Register Write Functions
Register
8254 Counter/Timer Control Register Base + 7
Cascade Pre-scaler 8254 C/T 2 Control Register Base + 6
A/D Timer
8254 C/T 1 Control Register Base + 5
8254 C/T 0 Control Register Base + 4
Range/Control Select
R0 R1 R2 R3 ENHF CS0 CS1 CSE Base + 3
Scan Limits Register SC0 SC1 SC2 EC0 EC1 EC2 NA NA CS1/0=1/0
Conversion Control
ITE CASC DTEN IEOC EACS GTEN NA HCEN CS1/0=0/1
Control Register 1
MA0 MA1 MA2 INTE OP1 OP2 OP3 OP4 CS1/0=0/0
Special Function - (Depends on value of CS0,1) Base + 2
Start Conversion
Base + 1
Start Conversion Base + 0
D0 D1 D2 D3 D4 D5 D6 D7
Register
Write
Functions Data Bits
Function
Table 3-2. Control Register Select Coding
ID Register Not defined 1
1
Status Register #2 Scan Limits Reg 0 1
Status Register #2 Conversion Control Register 1 0
Status Register #2 Control Reg # 1 0 0
Read Function
Write Function
CS0 CS1
Control Register Selected
Table 3-3. Range (Gain) Select Codes
Uni: 0 to 0.01V (g=1000) Uni: 0 to 1.25V (g=8) 1 1 1 1
Bip: +/- 0.005V(g=1000) Bip: +/- 625mV (g=8) 0 1 1 1
Uni: 0 to 0.1V (g=100) Uni: 0 to 2.5V (g=4) 1 0 1 1
Bip: +/- 0.05V (g=100) Bip: +/- 1.25V (g=4) 0 0 1 1
Uni: 0 to 1V (g=10) Uni: 0 to 5V (g=2) 1 1 0 1
Bip: +/- 0.5V (g=10) Bip: +/- 2.5V (g=2) 0 1 0 1
Uni: 0 to 10V (g=1) Uni: 0 to 10V (g=1) 1 0 0 1
Bip: +/- 10V (g=0.5) Bip: +/- 10V (g=0.5) 0 0 0 1
Bip: +/- 5V (g=1) Bip: +/- 5V (g=1) 0 0 0 0
DAS-801 DAS-802 R0 R1 R2 R3
Range / (Gain) Range (Gain) Select:
15