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83
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507
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013 Rev. D
59
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 Re
g
ister (SEVE?), the
Fault Condition Register, the Fault Enabl
e Register and the Fault Event Register IFEVE/). All registers
will be represented in two Hex bytes. Following the register data, a single dollar sign, $, will be added
to signal the end of data and the start of a chec
k
sum. The checksum will be the sum of
all register
data and will be represented in two Hex bytes. The transmission will end with the CR character. If r
e-
petitive sending of SRQs was active and the supply was sending them, the supply will stop sen
d
ing
repetitive SRQs but leave the function activ
e. The contents of the registers will not be destroyed. Note
that the supply does snot have to be the active addressed su
p
ply.
Note that this command will not execute if another command is being processed.
7.10.4.2
Print Power On Time
Print the total time the suppl
y has operated under AC power. Send 2 bytes in sequence, A6 Hex and
the address of the supply in binary. A 32 bit integer will be returned in 8 Hex bytes. The data will be
the number of minutes that power has been ‘ON’ in the supply in binary. A ‘$’ sign a
nd 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 s
upply does not have to be the active addressed su
p
ply.
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 ad
dressed su
p
ply.
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 co
m-
mand will not cause the supply to retransmit data obtained from any prev
ious Single
Byte Command.
7.10.4.4
Test if MD Mode is Installed
Send AA Hex followed by the address of the supply in binary. If not installed, the supply will return a
‘1’. If installed, the supply will return a ‘0’.
7.10.5
Addressed commands without response
7.10.5.1
Acknowledge
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.
7.10.5.2
Re
-
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 sof
t-
ware prior to this command to take affect.