TDT RZ2, Manual

Page: 151 / 736

System 3 3-19
RX6 Multifunction Processor
3. Click Modify to display the Edit I/O Setup Control dialog box.
In this dialog box, a series of check boxes are used to create a bitmask
that is used to program all bits.
4. To enable the check boxes, delete Und from the Decimal Value box.
5. To determine the desired value, select or clear the check boxes according to
the table below. By default, all check boxes are cleared (value = 0).
Selecting a check box sets the corresponding bit in the bitmask to one.
6. When the configuration is complete, click OK to return to the Set Hardware
Parameters dialog box.
Bit Codes for Controlling the Bit Lights (Boxes 12 ‐ 14)
By default, check boxes 12 –14 in the Edit I/O Setup Control dialog box (previous
diagram) are cleared to create the bit code 000. This configures the eight front
panel Bits lights to act as activity lights (glow when high) for the eight bit
addressable digital I/O lines. The Bits lights can also be configured to provide
Bit_# Description
0-7 Each of these bits controls the configuration of one of the
eight addressable bits as inputs or outputs. Setting the bit
to one will configure that bit as an output.
8-9 Each of these bits controls the configuration of one of the
two addressable bytes as inputs or outputs. Setting the bit
to one will configure that byte as an output.
bit 8 controls byte A, and bit 9 controls byte B.
10-11 bits 10 – 11 are not used.
12-14 Create a bit code that determines how the front panel Bits
lights are used, see table below.
15 Not used.