7.10.4.4Test if MD Mode is Installed

Send AA Hex followed by the address of the supply in binary. If not installed, the supply will re- turn a ‘1’. If installed, the supply will return a‘0’.

7.10.5 Addressed commands without response

7.10.5.1Acknowledge SRQ

Send (0xE0 + Address) (1 byte binary - send 2 times sequentially). The supply will stop re- sending SRQ. If Enable SRQ retransmission is active, it will remain active.

7.10.5.2Re-enable SRQ with out reading/clearing the SEVE Register

Send A5 Hex followed by the address of the supply in binary and new SRQ’s generated by new events in the Fault Event will be enabled without reading and clearing the Status Event Register. All events previously recorded in the Fault Event Register must have been serviced by the user’s software prior to this command to take effect.

Name

Bit Positions

Response

Description

 

 

 

 

Global

 

 

 

Commands

 

 

 

Disable MD Mode

1010 0000

None

Set supplies out of MD Mode (de-

 

 

 

fault)

Enable MD Mode

1010 0001

None

Set supplies into MD Mode

 

 

 

 

Disable SRQ

1010 0010

None

Disable retransmission of SRQs

retransmission

 

 

by supplies (default)

Enable SRQ

1010 0011

None

Enable retransmission of SRQs by

retransmission

 

 

supplies

Enable FLT Bit

1010 0100

None

Enable the FLT bit in the SENA

 

 

 

Register

 

 

 

 

Disconnect serial

1011 1111

OK

All supplies will halt transmission

communications

 

 

and enter the non-addressed

 

 

 

state.

Addressed

 

 

 

Commands

 

 

 

Read Registers

100x xxxx

Register data

Non destructive read of all regis-

 

 

 

ter. x xxxx is the address of the

 

 

 

supply in binary.

Re-enable SRQ

Byte 1

None

Re-enable SRQ without reading or

 

1010 0101

 

clearing the SEVE Register. xxxx

 

Byte 2

 

xxxx is the address of the supply

 

xxxx xxxx

 

in binary. Works only in MD Mode.

61

83-507-5002 Rev. B

Page 69
Image 69
TDK 750W HALF RACK technical manual Test if MD Mode is Installed, Addressed commands without response Acknowledge SRQ