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83
-
507
-
013 Rev. D
60
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 (d
e
fault)
Enable MD Mode
1010 0001
None
Set supplies into MD Mode
Disable SRQ
r
e
transmission
1010 0010
None
Disable retransmission of SRQs by
supplies (default)
Enable SRQ
r
e
transmission
1010 0011
None
Enable retransmission of SRQs by
supplies
Enable FLT Bit
1010 0100
None
Enable th
e FLT bit in the SENA Re
g-
ister
Disconnect serial
communications
1011 1111
OK
All supplies will halt transmission and
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
1010 0101
Byte 2
xxxx xxxx
None
Re
-
enable SRQ without reading or
clearing the SEVE Register. xxxx xxxx
is the address of the supply in binary.
Works only in MD Mode.
Print Power On
T
ime
Byte 1
1010 0110
Byte 2
xxxx xxxx
Power On time
in minutes
Read the time the supply is active u
n-
der AC Power. xxxx xxxx is the a
d-
dress of the supply in binary. Returns a
32 Bit integer as 8 Hex bytes. A ‘$’
sign is appended to the data followed
by a 2
byte check
-
sum. A total of 11
bytes are returned.
Retransmit last
message
110x xxxx
Last message
Retransmit last response from a co
m-
mand. x xxxx is the address of the
supply in binary.
Acknowledge
SRQ
111x xxxx
None
Acknowledge SRQ. If retransmission
of
SRQ is enabled, it will remain e
n-
abled for the next SRQ. X xxxx is the
address of the supply in binary.
Test if MD Mode
is Installed
Byte 1
1010 1010
Byte 2
xxxx xxxx
0 or 1
Returns a 0 if not installed or a 1 if i
n-
stalled. A ‘$’ sign followed by a 2 byte
s
checksum and Carriage Return is a
p-
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.