Remote Control; General; Command Reference - Hameg HM7044 Manual De Instrucciones

R e m o t e C o n t r o l

Remote Control

General

The HM7044 is supplied with a serial interface ex factory.
As optional accessories an USB interface (HO870), an IEEE
interface (HO88) or a serial interface (HO890), all galvanically
isolated, are availale.
The communication parameters of the interface are 9600 baud,
8 N 2, command termination CR (0x0D).
After every accepted command the instrument answers with
a corresponding answer.

Command reference

1. SELECT
Format: SEL(ECT) [1,2,3,4] [A(LL)] [N(ONE)] [?]
Selction of one, several or all channels.
Examples:
Command
Selection of channels I and II
SEL 1,2
Requesting the selection
SEL?
Selecting all channels
SEL ALL
Selecting no channels
SEL NONE
2. SET
Format: SET value [V] [A]
Setting the parameters V and A of the channels selected. If
no channels were selected, all channels will be changed.
Example:
Command
Setting channels I and II to 12.1V / 2.1A:
SEL 1,2
SET 12.1 V
SET 2.1 A
3. FUSE
FORMAT F(USE) [(1)(2)(3)(4)] [ON] [OFF]
Activating the electronic fuse for the channels selected.
If no channels were selected, the electronic fuses of all
channels will be activated. The electronic fuses of up to 4
channels can be linked together.
Example:
Command
Setting the electronic fuse for channels I and II:
SEL 1,2
FUSE ON
Coupling the electronic fuses of channel I and IV and ad-
ditionally of channels II and III
FUSE 1,2,2,1
4. READ
Format: READ (READOUT/READVALUES)
This command reads back the actual values and states of
the several channels.
24
Subject to change without notice
Answer
channel 1,2 selected
channel 1,2 selected
channel 1,2,3,4 selected
unselected
Answer
channel 1,2 selected
channel 1,2 set to 12.10 V
channel 1,2 set to 2.100 A
Answer
channel 1,2 selected
channel 1,2 fuse aktivated
fuse set to 1,2,2,1
The answer consists of the output voltages set, the current
limits set and the states of the channels I - IV.
Example:
Command: READ
Answer: 00.01V 12.00V 13.22V 14.70V; 2.787A 0.000A 0.000A
3.000A; CC-1 CV-2 CV F3 OFF F4
that means:
channel I: 0.01 V, 2.787 A, CC, electronic fuse 1
channel II: 12.00 V, 0.000A, CV, electronic fuse 2
channel III: 13.22 V, 0.000 A, F3, OFF
channel IV: 14.70 V, 3.000 A, F4
OFF: The channel is off.
CV: The channel is in volatage regulation mode
(constant voltage)
CC: The channel is in current regulation mode
(constant current)
F/–: F = fuse is active
– = fuse is inactive
1,2,3,4: Parameter for the electronic fuse
5. LOCK
Format: LOCK [ON] [OFF]
Lock / Unlock keyboard entries.
If the keyboard is locked, the PROG. LED
Example:
Command
LOCK ON
LOCK OFF
6. ON
Format: ON
Activates the channels selected. If no channel is selected,
all channels are activated. The ENABLE OUTPUT command
has to be sent to put the outputs on.
Example:
Command
SEL 1
ON
7. OFF
Format: OFF
Disactivates the channels selected. If no channel is selec-
ted, all channels are disactivated.
Example:
Command
SEL ALL
ON
8. ENABLE OUTPUT
Format: EN(ABLE OUTPUT)
Puts on all channels activated with the ON command
(equivalent to the OUTPUT buton).
Example:
Command
ENABLE OUTPUT
EN
9. DISABLE OUTPUT
Format: DIS(ABLE OUTPUT)
Puts off all channels (equivalent to the output button)
Example:
Command
DISABLE OUTPUT
DIS output
blinks.
Answer
keyboard locked
keyboard unlocked
Answer
channel 1 selected
channel 1 on
Answer
channel 1,2,3,4 selected
channel 1,2,3,4 on
Answer
output enabled
output enabled
Answer
output disabled
disabled