Chapter 2
Register Map and Descriptions
6527 Register-Level Programmer Manual
2-4
ni.com
Output Registers (Ports 3–5)
The Output Registers are read and write. Write to an Output Register to control the switch
states of the eight solid-state relays on the corresponding port. Read an Output Register to get
the states of the eight relays associated with the port. The power-up state of each register is
all high (hex FF), causing the relays to be open.
Address Offset:
03 (hex) for Port 3
04 (hex) for Port 4
05 (hex) for Port 5
Type:
Read and write
Size:
8-bit
Bit Map:
Bit
Name
Description
7–0
N
.<7..0>
Data—These are the eight output data bits of output
Port
N
, where
N
is bit 0, 1, or 2, from bit 7 down to 0.
1 = Open relay (power-up state)
0 = Close relay
7
6
5
4
3
2
1
0
N
.7
N
.6
N
.5
N
.4
N
.3
N
.2
N
.1
N
.0
