Front Panel Operation - 5

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

Display

1.

On the Function keypad, press Output.

*RST

2.

Scroll through the Output menu by pressing q . The PORT command

PORT RIDFI

 

lets you select either the RIDFI or the DIGIO function.

 

3.

Scroll to the RI command to configure the Remote INHibit indicator.

RI LIVE

 

Use the ã and ä keys to select either LIVE or LATCHING, either of

RI LATCHING

 

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

DFI ON

 

command lets you enable the Discrete Fault Indicator. Use the ä 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

DFI:SOUR RQS

 

drives this signal. Use the ä key to select from the RQS or ESB bits, or

DFI:SOUR ESB

 

the Operation or Questionable status registers. Status summary bits are

DFI:SOUR OPER

 

explained in chapter 3 of the Programming Guide.

DFI:SOUR QUES

To configure the DIGIO mode of the port, proceed as follows:

 

Action

Display

1.

On the Function keypad, press Output.

*RST

2.

Scroll through the Output menu by pressing q . The PORT command

PORT DIGIO

 

lets you select either the RIDFI or the DIGIO function.

 

3.

Scroll to the DIGIO command to set and read the Digital Input/Output

DIGIO 5

 

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.

 

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