Measurement Computing Digital232 - Manual (Page 27)

Section 3 Command Descriptions
3.5
CONFIGURE Cn
Ports 1 thru 5 are configured as inputs or outputs with the Configure command.
Each port is eight bits wide. At power-on, all ports are initialized as inputs. The
Configure command is usually the first command to be sent after power on. All ports
programmed as outputs will be set to a logic zero after receiving the Configure
command. The actual output level is dependent on the Invert command (I16).
Cn Mode n (0 thru 5) defines which ports are input and output
Port 5 4 3 2 1
C0 in in in in in
C1 in in in in out
C2 in in in out out
C3 in in out out out
C4 in out out out out
C5 out out out out out
in = programmed as an input port
out = programmed as an output port
Example:
@ reset the Digital232
C1 select port 1 as output, ports 2 thru 5 as inputs