DTL-DB10-6 データシートの表示（PDF） - Murata Manufacturing

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DTL-DB10-6

Interface Board for Serial-Input Electronic Loads

Murata Manufacturing 

Adding DTLx485 Active X Control to Your Project's

Toolbox

After installing the WinBurn™ DTLx485, you can add the

control to your Visual Basic-based application as follows:

On the menu tab, select Project, and then click on

Components, which will display a Components Dialog

Box (see Figure _ _). Alternatively, right-clicking on the

Toolbox also brings up the Component Dialog Box. To

add the DTLx485 ActiveX control to your application

project, click on the Browse button, and locate the

DTLx485.ocx file (WinBurn™ default directory of

C:\Program Files\DATEL\DTLx\DTLx485. Click on the

DTLx485.ocx file to add it to the Components list. Now,

either double-click on the DTLx485, or select the check

box to the left of the DTLx485 name to add it to the

Toolbox. Click OK to close the Components dialog box.

DTLx485ctl Class/Members

Under Visual Basic, the WinBurn™ DTLx485 ActiveX

Control has the "Class" DTLx485ctl, with the following

"Members" to point out:

CheckFaultStatus

Function: Returns the status

of the DTLXA Series Fault Line

0 = No Fault

1 = Fault

2 = Time Out

3 = Port Not Open

ClosePort

Function: Closes the Serial

Communication Port

8 = Run time error

Col

Property: Sets the DTLXA

Series load position (Column =

X)

0 -15

ELType (DtlType?)

Property: Sets the DTLXA

Series Model Used (Current/

Voltage)

2 =DTL2A/DTL2A-LC

3 = DTL3A

4 = DTL4A

LastReadVoltage

Property: Reports the last A/D

reading

-1 = Error

LoadStoredCurrent

SubRoutine: Updates load to

value set for load

OpenPort

Function: Opens the Serial

Communication Port

PortNumber

Property: Returns/sets the

Communication Port

ReadVoltage

Function: Performs A/D

conversion to read voltage

(presumably at load)

RequestAmps

Property: Prepares the load

for the current value to be

loaded with the

StoreLoadCurrent and

SetLoadCurrent commands

12

ResetAllLoads

ResetLoads

individual

load to zero current

Row

SetAllLoadCurrents

SetLoadCurrent

StoreLoadCurrent

SubRoutine: Resets all loads

to zero current

SubRoutine: Resets

Property: Sets the DTLXA

Series load position (Row =

Y)

0 - 15

Function: Sets all DTLXA

Series Load Input Latches to

the same load current value.

This command requires all

loads to be of the same type

voltage/current (i.e., all 20A/

50V models)

Function: Sets DTLXA Series

Load with load current value

to be set with next

"StoreLoadCurrent", after

RequestAmps sets value

Function: Updates load to

value set for load

In general: Default properties are:

Com Port = 5 (typical for 485 board...reset to 1 or 2 if

using PC's com Port.

Load = 2 for a DTL2A, change if DTL3A or DTL4A

Row/Column set to 1st unit (0,0), change for multiple unit

systems.

To set a particular load's current, you'll first set

properties if the Default settings don't apply. Then you'll

do a RequestAmps, to set the desired current value.

Then, a StoreLoad Current will enter this into the 1st

latch. Finally, a SetLoadCurrent (or SetAll Load

Currents) command, will update the loads with a new

value.

WinBurn™ DTLx485, Port Control

Developing an application that controls "instruments", whether

they be test systems or burn-in racks, requires a user to first

check the communication between the PC and the

"instruments". The DTL-IFB can be connected to a standard

PC RS232 COM port with an appropriate RS232/RS485

adapter (see Figure 4). Alternatively, a plug-in RS485 board

can be plugged into the PC. COM1 and COM2 ports are

typically brought out on the rear of a PC, and plug-in cards

typically use COM3 or COM4.

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