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GMC-I Messtechnik GmbH
C_DYN, C_DYN? – Setting Current Regulating Dynamics
Menu
Function
This command makes it possible to adapt the control dynamics of
the current regulator to inductive loads. Correct use of this command
allows for optimization of the regulator for critical load circumstances.
Setting Command
Syntax:
C_DYN txt
Parameters List
Query Command
Syntax:
C_DYN?
Sample response string:
C_DYN R
CRA?, CRB? – Condition Register Query
Menu
Function
The condition register provides information concerning the
momentary status of specific device functions at the time the
query was executed. For example, if the output is switched to
constant current regulation, the appropriate CCR bit is set in
condition register A (CRA) (condition TRUE
condition bit = 1).
This bit remains set until the current regulating mode is exited. The
condition register can be queried as often as desired during this
time, without causing any change to its content. The correspond-
ing bit is not reset until the output is no longer operating in the cur-
rent regulating mode (condition FALSE
conditions bit = 0).
The device is furnished with an 8-bit condition register. It can be
read out, but direct overwriting and deletion are not possible.
The response consists of a whole number 0
n
255, where
n
corresponds to the decimal equivalent of the register’s content.
Query Command
Syntax:
CRA?
Condition register A
Query Command
Syntax:
CRB?
Condition register B
DCL, SDC – Device Clear Function
—
Function
The device clear command causes clearing of the input and
output buffers at the computer interfaces (e.g. requested data
which have not been picked up). Interface-internal waiting times
and lockouts are cleared. The device is ready to receive data.
Addressing status
Unchanged
Input and output buffers
Cleared
Service request SRQ
Unchanged
Status byte register
MAV bit = 0, otherwise unchanged
Event registers ESR, ERA, ERB, ERC
Unchanged
Enable registers ESE, ERAE, ERBE, ERCE, SRE, PREUnchanged
Set and stored parameters
Unchanged
This command is processed:
a) As a device message via all computer interfaces
(setting command) 'DCL' or 'SDC'
Syntax:
DCL
or
Syntax:
SDC
b) Via the IEC bus interface as addressed command SDC
(SELECTED DEVICE CLEAR)
c) Via the IEC bus interface as universal command DCL (DEVICE
CLEAR) for all bus users
DISPLAY, DISPLAY? – Function Switching for Displays A and B
Menu
Function
The display function makes it possible to control displays A and B
separately in accordance with the table below.
If this view is exited, e.g. by selecting another parameter with
SELECT, or with the rotary encoder or via the menu, the display
returns to this configuration after the specified time has elapsed
(DDC: see the table entitled “Adjustable Functions and
Parameters” in chapter 10.1).
Setting Command
Syntax
DISPLAY
txt1,txt2
Default setting
or after RESET (*RST):
UO, IO
Parameters List
The ON or OFF status does not change the selected display
function.
Query Command
Syntax
DISPLAY?
Sample response string:
DISPLAY UO,IS
Param-
eter
Content Meaning
txt
R
Full current regulating dynamics, for minimal inductive loads
L
Reduced current regulating dynamics, for higher inductive loads or
in case of parallel connection
Designation
Query Command
Condition Register A (CRA)
CRA?
Condition register B (CRB)
CRB?
D7:
SEQB
Sequence function active
D6:
OTP2A
Overtemperature shutdown (OTP LEVEL 2) active
D5:
OTP1A
Temperature signal (OTP LEVEL 1) active
D4:
OVPA
OVP signal active
D3:
OCPA
OCP signal active
D2:
OL
Overload
D1:
CCR
Output in current regulating mode
D0:
CVR
Output in voltage regulating mode
D7:
TCB
TST or ADJUST/CAL function active
D6:
T2A
Signal at trigger input 2 of the analog interface active 2)
D5:
T1A
Signal at trigger input 1 of the analog interface active 2)
D4:
ACLL
AC LEVEL LOW (line voltage < 182 Vrms)
D3:
0
D2:
S123A
Signal output SIG1 or/and signal output SIG2 or/and signal output
SIG3 at the analog interface active
D1:
CMPC
Measured current value not within the current tolerance band specified by
UI_C_SET w1.w2.w3.w4 divided by w3.w4; ENABLE: ?MINMAX ON?
D0:
CMPV
Measured voltage value not within the voltage tolerance band specified by
UI_C_SET w1.w2.w3.w4 divided by w1.w2; ENABLE: ?MINMAX ON?
Status Description
Display A
txt1
Display B
txt2
Menu
ON
7-segment display activated
X
X
dpy-A/B
OFF
7-segment display deactivated
X
X
dpy-A/B
UO
Output voltage Uout (default value)
X
—
dpy-A
US
Voltage setpoint Uset
X
—
dpy-A
PS
Power setpoint Pset
X
—
dpy-A
IO
Output current Iout (default value)
—
X
dpy-b
IS
Current setpoint Iset
—
X
dpy-b
PO
Output power Pout
—
X
dpy-b
—
Display switching time
—
—
ddc
Summary of Contents for P1500
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