Programming The Digital Output Port - Agilent Technologies 6631B User Manual

4 - Programming the Digital Output Port

Your dc source is shipped with the output port function set to RIDFI mode. In this mode the port
functions as a remote inhibit input with a discrete fault indicator output signal. You can also configure
the port to act as a Digital Input/Output device.
To configure the RIDFI mode of the port, proceed as follows:
Action
1. On the Function keypad, press Output.
Scroll through the Output menu by pressing q . The PORT command
2.
lets you select either the RIDFI or the DIGIO function.
3. Scroll to the RI command to configure the Remote INHibit indicator. Use
the Ë and Ì keys to select either LIVE or LATCHING, either of which
enable the RI indicator. With RI enabled, a low-true on the INH input
will disable the output of the unit. LIVE causes the output of the unit to
track the state of the INH input. LATCHING latches the output of the
unit off in response to the inhibit signal.
4. Access the Output menu again and scroll through the menu. The DFI
command lets you enable the Discrete Fault Indicator. Use the Ì key and
select ON to enable the FLT output. With the FLT output enabled, the
open-collector logic signal can be used to signal external devices when a
fault condition is detected.
5. Scroll to the DFI:SOUR command to select the internal source that drives
this signal. Use the Ì key to select from the RQS or ESB bits, or the
Operation or Questionable status registers. Status summary bits are
explained in chapter 3 of the Programming Guide.
To configure the DIGIO mode of the port, proceed as follows:
Action
1. On the Function keypad, press Output.
Scroll through the Output menu by pressing q. The PORT command lets
2.
you select either the RIDFI or the DIGIO function.
3. Scroll to the DIGIO command to set and read the Digital Input/Output
Port. Enter a number from 0 to 7 to program the four bits (0 programs all
bits low; 7 programs all bits high). Press Enter when done.
Front Panel Operation - 5
Display
*RST
PORT RIDFI
RI LIVE
RI LATCHING
DFI ON
DFI:SOUR RQS
DFI:SOUR ESB
DFI:SOUR OPER
DFI:SOUR QUES
Display
*RST
PORT DIGIO
DIGIO 5
45