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83
-
5
15
-
0
00
Rev.
B
61
Table 7
-
4. SINGLE BYTE COMMANDS
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 su
p-
plies (default)
Enable SRQ
r
e
transmission
1010 0011
None
Enable retransmission of SRQs by supplies
Enable FLT Bit
1010 01
00
None
Enable the 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 a
d-
dress of the supply in binary. Works only in
MD Mode.
Print Power On
Time
Byte 1
1010 0110
Byte 2
xxxx xxxx
Power On
time in
minutes
Read the time the supply is active under
AC Power. xxxx xxxx is the address of the
supply in binary. R
e
turns a 32 Bit integer as
8 Hex bytes. A ‘$’ sign is appended to the
data
followed by a 2 byte check
-
sum. A t
o-
tal of 11 bytes are returned.
Retransmit last
message
110x xxxx
Last me
s-
sage
Retransmit last response from a command.
x xxxx is the address of the supply in b
i-
nary.
Acknowledge
SRQ
111x xxxx
None
Acknowledge SRQ. If r
etransmission of
SRQ is enabled, it will remain e
n
abled for
the next SRQ. X xxxx is the address of the
supply in binary.
Test if MD Mode
is Installed
Byte 1
1010 1010
Byte 2
xxxx xxxx
0 or 1
Returns a 0 if not installed or a 1 if i
n-
stalled. A ‘$’ sign fol
lowed by a 2 bytes
checksum and Carriage Return is a
p-
pended to the data. xxxx xxxx is the a
d-
dress 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
.