Gossen MetraWatt P1500, Operating Instructions Manual

Page: 52 / 72

52 GMC-I Messtechnik GmbH
SIG123, SIG123? – Analog Interface Signal Outputs
Menu
Function
Two floating signal outputs (SIG 1 and SIG 2) and one signal
output with reference to AGND 2 (SIG 3) are provided at the
analog interface. They can be used to trigger control functions in
the application. Different device functions and statuses can be
assigned to these signals.
Setting Command
Syntax:
SIG123 txt1,txt2,txt3
Default setting
or after RESET (*RST): OFF
Query Command
Syntax:
SIG123?
Sample response string:
SIG123 txt1.txt2.txt3
Parameters List
1
The signal outputs can be logically linked using the comparison function. The
reference values are defined by parameters
w1 , w2 , w3 and w4 from the UI_C_SET
command. Momentary measured voltage and current values are compared with
these parameters and evaluated.
SINK, SINK? – Sink Function On/Off
Menu
Function
The device is equipped with a sink function for improved dynamic
characteristics, which can be activated or deactivated as desired.
After an OUTPUT OFF command, the sink is deactivated (if initially
activated) after a specified period of time (300 ms).
Setting Command
Syntax:
SINK txt
Parameter txt: OFF/ON
Default setting
or after RESET (*RST): ON
Query Command
Syntax:
SINK?
Sample response string:
SINK txt
SM_LOAD – Load Sequence Memory Location
Menu
Function
The content of a memory location can be loaded in a targeted
fashion with the SM_LOAD command. The USET, ISET, TSET and
FSET parameters are entered to the current device settings
during this procedure. USET and ISET are read out at the power
output in the case of OUTPUT ON.
Setting Command
Syntax:
SM_LOAD n
Value range: 1

n

1536/1700
SM_STORE – Store to Sequence Memory Location
Menu
Function
The contents of the USET, ISET, TSET and FSET parameters from
the current device settings can be written to the specified
memory location with the SM_STORE command.
The range of memory locations between the start and stop
addresses can be cleared with the
SM_STORE 0
command.
These memory locations are then in the empty state (CLR).
Setting Command
Syntax:
SM_STORE n
Value range: 1

n

1536/1700
Special case n = 0 (delete range)
SSET, SSET? – Command for an Assigned Switching Function (sig-
nal level switching function)
Menu, SSET Key
Function
The SSET switching status can be controlled with the SSET
setting command or with the corresponding FSET parameter
(S_ON/SOFF) of the sequence function. The SSET switching
function can then be linked with analog interface functions for
switching the signal outputs SIGx (command: SIG123) and/or for
controlling the analog inputs Uext and Iext (command:
ANALOG_IN).
Setting Command
Syntax:
SSET txt
Parameter txt: OFF/ON
Default setting
or after RESET (*RST): OFF
Query Command
Syntax:
SSET?
Sample response string:
SSET txt
Param-
eter Content Meaning –
Assignment
Level
txt n
OFF SIG n: direct off Passive high
ON SIG n: direct on Active low
OUT OUTPUT ON
OUTPUT OFF Passive high
Active low
MODE OFF or CV
CC or OL Passive high
Active low
SEQ READY/STOP
RUN Passive high
Active low
SSET OFF
ON Passive high
Active low
U_LO
1
U
meas

w1
U
meas

w1
Passive high
Active low
U_HI
1
U
meas

w2
U
meas

w2
Passive high
Active low
I_LO
1
I
meas

w3
I
meas

w3
Passive high
Active low
I_HI
1
I
meas

w4
I
meas

w4
Passive high
Active low
Para-
meter Meaning in UI_C_SET Command
w1 Lower voltage reference value
w2 Upper voltage reference value
w3 Lower current reference value
w4 Upper current reference value