GE Industrial Solutions CPS6000 - Manual (Page 166)

CPS6000 –48V Indoor/Outdoor Power Shelf
Issue 21 January 2008
166
After receiving the correct password, the controller will respond with one of the following
command line prompts:
User command-line prompt: *
Super-user command-line prompt: **
When these prompts appear the controller is ready to accept commands. Note that the session
will be terminated if the port is idle for 15 minutes.
T1.317 Command Language
The QS840A command language is based on the T1.317 standard. This section describes the
commands, objects and attributes used to access measurements, configuration, and control
parameters in the QS840A controller.
Objects and Attributes
The T1.317 standard organizes system parameters called attributes into groups called objects.
Note that all commands, objects, attributes and ranges for their respective parameters for the
QS840A controller are given in the following tables.
An object-attribute pair uniquely identifies a measurement, configuration, or control
parameter. For example, the object-attribute pair “dc1,vdc” identifies the plant voltage while
the object-attribute pair “dc1,adc” identifies the plant load current. In each of these examples
“dc1” identifies the plant object and “vdc” and “adc” identify DC voltage and DC current,
respectively.
There are three main commands involved with plant operations in the system controller
command set. The command “sta” is used to get the status of the plant, the command “cha” is
used to change a plant parameter, and the command “ope” is used to initiate a plant function.
A person at the “user” level can only perform the sta operations. A person at the “super-user”
level can also perform the cha and ope operations.
Instructions in the T1.317 command set take the following form:
command object,attribute[=parameter].
Certain commands do not require a value for parameter, while others do. Note that text
parameters are to be enclosed in quotation marks while numeric parameters are not to be
enclosed in quotation marks.
For example, to obtain the plant voltage, type in the following command:
sta dc1,vdc
To enable low-temperature slope thermal compensation, type in the following command:
cha sc1,rve=1
To change the voltage at which the LVD contactor disconnects the batteries from the load to
40V, type the following: