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6RL SERIES OPERATION MANUAL
SECTION 7: REMOTE PROGRAMMING
Entire Contents Copyright
2018 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
6RL Series Regenerative DC Load Operation Manual
Page 129 of 204
interface, but is calculated from the actual volt- age and current. Hence, the user can
calculate the actual resistance himself.
Actual values can be queried separately or all at once. The advantage of a combined query is
that you gain a snapshot of the most recent actual values of the DC Input. When querying
separately, values may have changed already when sending the next query.
According to the register list, the actual values start from register 507. Three registers shall
be read:
Addr
FC
Start
Data
CRC
0x00
0x03
0x01FB
0x0003
0x7417
Possible Response:
Addr
FC
Len
Data
CRC
0x00
0x03
0x06
0x2620 0x0C9B 0x091B
0x9EC0
3)
Read the nominal voltage of a unit
The nominal voltage, like the other nominal values of current, power or resistance, is an
important value to read from a unit. They are all referenced for translating set values and
actual values. It is recommended to read them from the unit right after opening the digital
communication line, or the software will not be universal.
According to the register list, the nominal voltage is a 4-byte float value in register 121.
Addr
FC
Start
No.
CRC
0x00
0x03
0x0079
0x0002
0x1403
Possible Response:
Addr
FC
Len
Data
CRC
0x00
0x03
0x04
0x42A00000
0xFEA9
4)
Read Unit Status
All units report their status in a register, for the 6RL Series, this is register 505.
Addr
FC
Start
No.
CRC
0x00
0x03
0x1F9
0x0002
0x1417
Possible Response:
Addr
FC
Len
Data
CRC
0x00
0x03
0x04
0x00000483
0xA992
See also section 7.9.2. The response contains the value 0x483, which states that the unit is
in remote control via the USB port, that the DC Input is switched on and that CC (constant
current) mode is active.
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