18
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Register Format
3.3
Relay Output Read Back Register
The status of the latching relay can be readback from the readback register.
If the relay is in RESET condition, the corresponding bit value is ‘0’. If the
relay is in SET condition, the bit value is ‘1’
.
Address: BASE + 0x02
Attribute: Read
7
6
5
4
3
2
1
0
RBK7
RBK6
RBK5
RBK4
RBK3
RBK2
RBK1
RBK0
15
14
13
12
11
10
9
8
RBK15
RBK14
RBK13
RBK12
RBK11
RBK10
RBK9
RBK8
RBKx: Read back data of relay x, x=0~15
1: relay is in SET status
0: relay is in RESET status
3.4
Isolated Digital Input Register
There are 16 isolated input channels on PCI-7256 card. The status of the 16
channels can be read from the isolated input register. Each bit corresponds
to each channel. The bit value “1” means the input logic is high and “0”
menas the input logic is low.
Address: BASE + 0x04
Attribute: Read
7
6
5
4
3
2
1
0
DI7
DI6
DI5
DI4
DI3
DI2
DI1
DI0
15
14
13
12
11
10
9
8
DI15
DI14
DI13
DI12
DI11
DI10
DI9
DI8
DIx: isolated digiatal input channel x, x=0~15
1: input voltage is in high level
0: input voltage is in low level
