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 174 of 204
For starters we offer example projects (available on request), one each for Profibus and
Profinet, which can be opened with Siemens STEP7 and which shall demonstrate the access
to the unit with preconfigured data blocks.
The register list for your unit or unit series has two columns, related to Profibus/Profinet use
only. These define slot and index number for a particular command. The necessary
parameter is defined in the register lists respectively section 7.5.5, “Translating Set values to
Actual values” on page 121. Rule of thumb:
Commands, where no slot/index is given, are not supported via Profibus or Profinet
The general procedure to control a unit remotely is like this:
1.
Activate remote control with the appropriate command (can be denied by the slave,
see section 6.5.2,”Control Locations“ on page 80)
2.
Control and monitor your unit remotely as long as required
3.
Deactivate, i.e. leave remote control
If you just want to record data by reading values from the unit, activation of remote control
is not necessary. You can send query commands to the unit at any time and the unit will
respond immediately, if the current unit situation allows the unit to respond at all.
When querying something from the unit, the function block will put out the data returned
from the unit to an output buffer. That data can then be processed.
The field bus ensures that the command is transmitted to the slave unit, otherwise it will
generate an error. However, it cannot verify that the unit really accepts the command or
already has set the desired value. This can only be verified by reading the value from the
unit and comparing. Whether a value has been transferred to the unit’s DC input / output
cannot be determined definitely.
In order to send a command from with a typical Profibus/Profinet software, following should
be applied:
1.
Select the command to use from the register list and read its assigned slot/index
values.
2.
Determine the I/Q address which is assigned to the particular slot in HWCONFIG and
which is used to get an ID value. The use of ID, index, slot and sub-slot are not just
different between Profibus and Profinet, but also between the different PLC systems
and software.
The examples below demonstrate:
1.
Set ID, index and parameter (set value, status or something else) in decimal or
hexadecimal form in the SFB and execute.
2.
Process the data returned from the unit, if the last command was a query
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