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7.10.3
Global commands with response
7.10.3.1
Disconnect from communications
Command the supply to end all data transmissions to the HOST PC/IEEE Board and cease
its role as the active addressed supply. The HOST PC/IEEE Board will be required to re-send
the ‘ADR nn’ command to reestablish communications with the supply. After receiving the first
command the supply will respond with an OK<CR>. The Hex value of the command is 0xBF.
All supplies, both the currently addressed supply and all non-addressed supplies, will respond
to this command; but only the currently addressed supply (if any) will respond with the ‘OK’.
7.10.4 Addressed commands with response
7.10.4.1 Read
registers
Send (0x80 + Address) (1 byte binary - send 2 times sequentially). The supply will return the
contents of the Status Condition Register, the Status Enable Register, the Status Event Reg-
ister (SEVE?), the Fault Condition Register, the Fault Enable Register and the Fault Event
Register IFEVE/). All registers will be represented in two Hex bytes. Following the register
data, a single dollar sign, $, will be added to signal the end of data and the start of a check-
sum. The checksum will be the sum of all register data and will be represented in two Hex
bytes. The transmission will end with the CR character. If repetitive sending of SRQs was ac-
tive and the supply was sending them, the supply will stop sending repetitive SRQs but leave
the function active. The contents of the registers will not be destroyed. Note that the supply
does snot have to be the active addressed supply.
Note that this command will not execute if another command is being processed.
7.10.4.2
Print Power On Time
Print the total time the supply has operated under AC power. Send 2 bytes in sequence, A6
Hex and the address of the supply in binary. A 32 bit integer will be returned in 8 Hex bytes.
The data will be the number of minutes that power has been ‘ON’ in the supply in binary. A ‘$’
sign and 2 byte Hex checksum will be appended to the data. There is no method provided to
reset this number.
Retransmit last message.
Send (0xC0 + Address) (1 byte binary - send 2 times sequentially). The supply will return the
last message sent. Note that the supply does not have to be the active addressed supply.
This command will not execute if another command is being processed.
Note that Single byte commands do not load data into the supply’s data output buffer.
Thus this command will not cause the supply to retransmit data obtained from any previous
Single Byte Command.
7.10.4.3
Retransmit Last Message
Send (0xC0 + Address) (1 byte binary - send 2 times sequentially). The supply will return the
last message sent. Note that the supply does not have to be the active addressed supply.
This command will not execute if another command is being processed.
Note that Single byte commands do not load data into the supply’s data output buffer. Thus
this command will not cause the supply to retransmit data obtained from any previous Single
Byte Command.
7.10.4.4
Test if MD Mode is Installed
