TDK 1500W, 750W technical manual None Disable retransmission of SRQs by

Table 7-3. SINGLE BYTE COMMUNICATIONS

Name	Bit Positions	Response	Description
Global
Commands
Disable MD Mode	1010 0000	None	Set supplies out of MD Mode (default)
Enable MD Mode	1010 0001	None	Set supplies into MD Mode
Disable SRQ	1010 0010	None	Disable retransmission of SRQs by
retransmission			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 Reg-
			ister
Disconnect serial	1011 1111	OK	All supplies will halt transmission and
communications			enter the non-addressed state.
Addressed
Commands
Read Registers	100x xxxx	Register data	Non destructive read of all register. 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 xxxx
	Byte 2		is the address of the supply in binary.
	xxxx xxxx		Works only in MD Mode.
Print Power On	Byte 1	Power On time	Read the time the supply is active un-
Time	1010 0110	in minutes	der AC Power. xxxx xxxx is the ad-
	Byte 2		dress of the supply in binary. Returns a
	xxxx xxxx		32 Bit integer as 8 Hex bytes. A ‘$’
			sign is appended to the data followed
			by a 2 byte check-sum. A total of 11
			bytes are returned.
Retransmit last	110x xxxx	Last message	Retransmit last response from a com-
message			mand. x xxxx is the address of the
			supply in binary.
Acknowledge	111x xxxx	None	Acknowledge SRQ. If retransmission
SRQ			of SRQ is enabled, it will remain en-
			abled for the next SRQ. X xxxx is the
			address of the supply in binary.
Test if MD Mode	Byte 1	0 or 1	Returns a 0 if not installed or a 1 if in-
is Installed	1010 1010		stalled. A ‘$’ sign followed by a 2 bytes
	Byte 2		checksum and Carriage Return is ap-
	xxxx xxxx		pended to the data. xxxx xxxx is the
			address of the supply in binary.
Supply Initiated
Communications
SRQ	100x xxxx	N/A	SRQ from supply when in MD Mode. X
			xxxx is the address of the supply in
			binary.

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83-507-013 Rev. D