7.6.6Acknowledge

The power supply acknowledges received commands by returning an “OK” message. If an error is detected the power supply will return an error message. The rules of checksum also apply to the acknowledge.

7.6.7Error message

If an error is detected in command or query, the power supply will respond with an error mes- sage. Refer to Section 7.7 for details.

7.6.8Backspace

The backspace character (ASCII 8) clears the last character sent to the power supply.

7.7 ERROR MESSAGES

The power supply will return error messages for illegal commands and illegal programming pa- rameters. Refer to Table 7-1 for programming error messages and Table 7-2 for command error messages.

Table 7-1: Programming error messages

 

Error

Description

 

Code

 

 

 

 

 

 

E01

Returned when program voltage (PV) is programmed above acceptable range.

 

 

Example: PV above ‘105% of supply rating’ or PV above 95% of OVP setting’.

 

E02

Returned when programming output voltage below UVL setting.

 

 

 

 

E04

Returned when OVP is programmed below acceptable range.

 

 

Example: OVP less than “5% of supply voltage rating’ plus ‘voltage setting’.

 

E06

Returned when UVL is programmed above the programmed output voltage.

 

 

 

 

E07

Returned when programming the Output to ON during a fault shut down.

 

 

 

Table 7-2: Commands error messages

 

 

 

 

Error

Description

 

Code

 

 

 

 

 

 

C01

Illegal command or query

 

 

 

 

C02

Missing parameter

 

 

 

 

C03

Illegal parameter

 

 

 

 

C04

Checksum error

 

 

 

 

C05

Setting out of range

 

 

 

7.8 COMMAND SET DESCRIPTION

7.8.1 General guide

1.Any command or argument may be in capital letters or small letters.

2.In commands with an argument, a space must be between the command and the argument.

3.For any command that sets a numeric value, the value may be up to 12 characters long.

4.Carriage Return: If the CR character (ASCII 13) is received by itself, the power supply will respond with “OK” and CR.

7.8.2Command set categories

1.Initialization control

2.ID control

3.Output control

4.Status control

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TDK 750W HALF RACK technical manual Error Messages, Command SET Description