Power-On Service Request (PON)

The power supply can request service from the controller when the power is turned on. This request can be enabled or disabled by sending a PON command (see page 80). When the request is enabled, the supply can generate an SRQ at power-on or when there is a momentary loss in power. You can execute a serial poll to clear the service request. Table 5-7 details the conditions under which a PON command will generate an SRQ.

Note

The power supply has a non-volatile memory in which it stores certain system variables. Some of these

 

variables are the calibration constants, the present supply address, and the present setting of the PON

 

command.

 

 

Programming Syntax

The following paragraphs describe the syntax of the device command that is used to program your power supply. As shown in Figure 5-1, the device command is a specific part of the program statement that your computer will accept. The first part of the statement is computer as well as programming language specific. Figure 5-1 shows the structure of a typical programming statement for an Agilent Series 200/300 computer. If you are using a different computer or programming language, refer to your computer programming manual to determine the correct syntax for this portion of the program statement. This section of the manual is only concerned with the device command portion (the part inside the quotes for Series 200/300 computers with BASIC) of the program statement.

Figure 5-1. Typical Program Statement for Series 200 Computers

 

Table 5-1. Power Supply Commands

 

Command

 

Header

Output

 

Data Range

 

 

 

Channel

(Fig. 5-2)

Query accumulated status register

 

ASTS?

1, 2, 3, 4

 

---

Return power supply to turn on state

 

CLR

 

 

---

 

---

 

Turn calibration mode on or off

 

CMODE

 

 

0,1 (OFF,ON)

 

---

 

Query if calibration mode is on

 

CMODE?

 

 

See Table 5-4

 

1, 2, 3, 4

 

Set the state of outputs at power on

 

DCPON

 

 

0,1 (OFF, ON) CC+

 

---

 

 

 

 

 

 

2,3 (OFF, ON) CC-

Query outputs power on state

 

DCPON?

---

 

---

Set the reprogramming delay time

 

DLY

 

 

0-32

 

1, 2, 3, 4

 

Query the setting of the delay time

 

DLY?

 

 

---

 

1, 2, 3, 4

 

Turn front panel display on or off

 

DSP

 

 

0,1(OFF,ON)

 

---

 

Display a string on front panel

 

DSP

 

 

’’STRING’’

 

---

 

Query if front panel display is on

 

DSP?

 

 

---

 

---

 

 

 

 

 

 

 

Syntax

Q2

C1

C2

Q1

C4

Q2

C2

C6

Q1

Remote Operation 65

Page 65
Image 65
Agilent Technologies 6628A, 6626A, 6625A, 6629A Programming Syntax, Power-On Service Request PON, Syntax Remote Operation

6629A, 6625A, 6626A, 6628A specifications

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