Jetter JetWeb JX2-IA4 Operator's Manual page 22

5.2 Registers of the JX2-IA4 Module
For communication with the CPU, 5 registers have been provided by the JX2-IA4
module. The operating system version number of the module can always be read
from register 9. The other module registers are being defined by the function of the
module. The registers are addressed as follows:
xx = Module number
YY = Module number -2
Example: Configuring and Evaluating Measurements
Task definitions for the first expansion module:
1. A unipolar input voltage ranging from 0 to 10 V is to be measured using channel
2. A bipolar input voltage ranging from -10 V to +10 V is to be measured using
3. An input current ranging from 0 to 20 mA is to be measured using channel 3.
4. A unipolar input voltage ranging from 0 to 10 V is to be measured using channel
Comments on the approach for task # 1:
22
Configuring Inputs and Outputs
Inputs A/D Value
Register
Channel # 1 3yy0
Channel # 2 3yy1
Channel # 3 3yy2
Channel # 4 3yy3
Output
Configuring xx01
Virtual through
Outputs xx08
1. Register 3yy0 contains the input voltage.
channel 2. Register 3yy1 contains the input voltage.
Register 3yy2 contains the input voltage.
4. Register 3yy3 contains the input voltage.
Note!
To carry out measurements, the virtual outputs for the respective measuring
method (unipolar, bipolar, current) have to be set in the program.
The assignment can be seen from table "Configuring Inputs and Outputs" on
page 22.
JX2-IA4
Voltage
Unipolar Bipolar
xxx0xxx0 xxx1xxx0
xx0xxx0x xx1xxx0x
x0xxx0xx x1xxx0xx
0xxx0xxx 1xxx0xxx
↑↑↑↑↑↑↑↑ ↑↑↑↑↑↑↑↑
87654321 87654321
Output numbers
JetWeb
Current
xxxxxxx1
xxxxxx1x
xxxxx1xx
xxxx1xxx
↑↑↑↑↑↑↑↑
87654321
Jetter AG