6RL SERIES OPERATION MANUAL
SECTION 7: REMOTE PROGRAMMING
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2018 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
6RL Series Regenerative DC Load Operation Manual
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This command sets the unit to a defined state, except when remote control is denied by the
unit:
1.
Switch to remote control (same as SYST:LOCK 1)
2.
Set DC input/output to off
3.
Clear alarm buffer
4.
Clear status registers to default condition (QUEStionable Event, OPERation Event,
STB)
*STB
Reads the STatus Byte register. The signal run of the various conditions and events is
illustrated in the register model below. The STB bits in particular:
Bit 0: not used
Bit 1: not used
Bit 2: err, Error Queue --> one or several error in the error buffer. By reading the error buffer or
sending *CLS it is flushed and the bit err is reset
Bit 3: ques, Questionable Status Register is active (one or several events have occurred) Bit 4: not
used
Bit 5: not used
Bit 6: not used
Bit 7: oper, Operation Status Register is active (one or several events have occurred).
7.12.5
Status Register
Not all unit conditions and alarms can be read with dedicated SCPI commands. As an
alternative, the remaining unit-related information are grouped in status registers. Using
regular polling, the status byte (STB) can be a starting point for reading the unit status. It
tells what status register has recorded at least one event. Apart from that, the other status
registers could also be polled directly. The difference then would be, that the user would
have to find out, what bits in the register have changed, by comparing the most recent value
with an older value. The bits in the status byte register will do that job for you. If they
remain 0, nothing has happened.
Once a bit in the STB signals that there was an event recorded in QUES or OPER register, you
could read the corresponding event register of OPER and QUES, in order to find out which
bits have changed in the COND register.
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