Terminating Profibus; Serial Port Controls; Table 7-9. Ae Bus And Profibus Communications Commands - Advanced Energy MDX II User Manual

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Advanced Energy

TERMINATING PROFIBUS

Profibus cables have termination resistors inside the cable connector itself. If the MDXII unit
is the last node on the Profibus, switch these termination resistors "on" in the cable connector
and ensure the termination resistors on the logic card are not jumpered.

SERIAL PORT CONTROLS

Control is given to the serial port when you press the HOST switch on the control panel.
Using commands, you can do everything from the serial port that you can do from the control
panel. Table 7-9 on page 7-20 lists the serial port communications commands.
Note: Your MDXII unit may not support all of these commands; your command set is based
on the software options you purchased. For more information about software options,
see "Unit Software Configuration" on page 2-9.
Most of these commands require that the unit be in serial control mode. Exceptions are noted
in the "Description" column of the table.
Some commands are available only through an AE Bus protocol, some are available only
through a Profibus protocol, and many are available through both. The checkmarks (
columns 2 and 3 in the table indicate through which protocol(s) a command is available.
Columns 5 and 6 in the table indicate how many AE Bus or Profibus data bytes are needed to
support the command. Columns 7 and 8 indicate how many AE Bus or Profibus data bytes are
needed to support the returned response to the command.

Table 7-9. AE Bus and Profibus Communications Commands

Command Used By
AE
√
0
null
Note: Commands 1 through 127 change the value of a parameter or direct the power supply to
perform a specific function. In response to these commands, the AE Bus will always
return a 1-byte CSR code (column 7).
√
1
OFF
7-20
Description
Pro
√
Null command. This request
is always honored,
regardless of which interface
has control.
√
Sets dc output off. This
request is always honored,
regardless of which interface
has control.
Serial Port Connection, Controls and Indicators
Host Data ResponseData
Bytes Bytes
AE Pro AE
0 0 Ack
0
0 0 1
5700262-R
√
) in
Pro
0
0