Programming instructions

36 Front-Panel Operation
To Close or Open a Channel
To close/open a channel, you need to:
1. Select the channel to be closed or opened;
2. Press Close/Open to close/open the channel.
Repeat steps 1 & 2 to close or open other channels.
To Read from a Digital I/O Port
To read data from the built-in digital I/O port/bits (090-094), or any one of
the 8-bit ports on a digital I/O, you need to:
1. Select a digital I/O port;
2. Press Read to read data from the selected port.
For example, the display below shows the data read from Port 401.
Note Data display format of individual 8-bit ports can be specified either in
binary or decimal. Once specified, the format applies to all input and output
operations on the same port (refer to “Mode Key Operation” on Page 40).
To Write to a Digital I/O Port
To write data to the built-in digital I/O port/bits (090-094), or any one of the
8-bit ports on a digital I/O, you need to:
1. Select a digital I/O port to be written to (“DIN” indicates that the last
operation on the port is a READ, and “DOUT”, a WRITE);
2. Press Write, the data from the last operation (READ or WRITE) on
the selected port will be displayed and “DOUT” is displayed to
indicate the port is now an output port;
DIN 401255 Decimal format
DIN 40111111111 Binary format
DIN 401
DOUT 401255