KEPCO BOP 1KW-MG Operator Manual, Firmware Ver.2.38 to 2.47 - Manual (Page 158)

B-8
BOP-1K 080709
FIGURE B-4. SETTING LIMITS
B.21 [SOURce:]CURRent[:LEVel]:LIMit:NEG COMMAND
CURR:LIM:NEG
Syntax: Short Form: [SOUR:]CURR[:LEV]:LIM:NEG
Long Form: [SOURce:]CURRent[:LEVel]:LIMit:NEGative
Description: Establishes the negative software limit for output current, i.e., sets the maximum value of out-
put current that the unit will be allowed to source (quadrant 3, Figure 1-3) or sink (quadrant 2) to the
value specified by the user. Requires MEM:UPD (PAR. B.12) to save for power up. See PAR. 3.5.2.2
and Figure 3-16 for special programming considerations.
B.22 [SOURce:]CURRent[:LEVel]:LIMit:NEG? QUERY
CURR:LIM:NEG?
Syntax: Short Form: [SOUR:]CURR[:LEV]:LIM:NEG?
Long Form: [SOURce:]CURRent[:LEVel]:LIMit:NEGative?
Returns
Description: Identifies the negative software limit value of output current that the unit can source (quadrant 3, Fig-
ure 1-3) or sink (quadrant 2).
NOTES: 1. This example assumes a BOP 36-28MG power supply is operating in constant current (CC)
mode.
2 Examples below are intended only to illustrate command functions. Refer to PAR. 3.5.2 for pro-
gramming techniques to optimize performance.
CURR:LIM? Returns 28,28 (positive and negative defaults for max
current in current mode).
CURR:LIMIT:POS 10;NEG 2 Establishes the maximum positive and negative current values
that can be set in current mode.
func:mode volt Sets power supply in voltage mode.
volt 15;curr 2 Allows the power supply to provide 15 volts positive with the
ability to source or sink up to 2 amperes. The display shows:
15.000 2.000 2.000.
CURR 10 Since the BOP is operating in voltage mode, sets the current
capability (current protect) to 10 amperes.The display shows:
15.000 10.000 10.000
curr:prot? Returns 10,10
CURR:prot:neg 1 Limits the negative current capability to 1 ampere.
CURR:PROT:LIM:NEG 5 Prevents CURR:PROT:NEG setting from exceeding
5 amperes
curr:prot? Returns 10,1 (the actual positive (10) and negative (1)
protection levels for the current.
---- Turn BOP POWER off and then on.
curr:lim?
Returns 28,28 the factory default levels (all the above
changes have been lost). To lock in the changed limits, the user
must send :MEMORY:UPDATE LIMITS.
CURR:PROT:LIM:POS 28.3;neg 28 Establishes new max current protect limits (positive 28.3 and
negative 28.
CURR 28 Establishes the positive protect to be 28 amperes and the
negative protection remains 28 amperes.
curr:prot? returns 28,28
func:mode curr Changes the mode of operation of the power supply to current
mode.