Remote Control27; General; Interface Parameters; Commands Reference - Hameg Instruments Hm8143 Handbuch

Remote control

General

The HM8143 comes with a RS-232 interface, which optionally
can be replaced by a IEEE-488 (HO880) or an USB interface
(HO870). We recommend the installation ex factory.

Interface parameters:

9600 baud, no paritybit, 8 data bits, 1 stop bit
When being controlled by interface, the HM8143 immediately
goes into remote mode as soon as a command arrives at the
interface. The REMOTE LED
ar disabled. Mixed operation, in which the instrument can also
be manually operated using the frontpanel controls although it
is connected to an interface, is possible by using the command
MX1. The commands have to be terminated with CR (0x0D). The
commands may contain upper and lower case characters.

Commands reference

RM1 + RM0
Format: RM1
Function: Puts the power supply in remote mode.
The frontpanel controls are disabled. In this mode,
the power supply can only be operated by interface.
This mode can be terminated by sending a RM0 com-
mand.
Format: RM0
Function: Disables the remote mode, returning the power
supply to local mode (permitting operation using
the front panel controls).
MX1 + MX0
Format: MX1
Function: Switches the power supply from remote mode into
mixed mode. In mixed mode, the instrument can be
operated either by interface or using the frontpanel
controls.
Format: MX0
Function: Terminates mixed mode and returns the instrument
to remote mode.
SU1 + SU2
Format: SU1:VV.mVmV or SU2:01.34
SU1:VV.mVmV or SU2:01.34
Function: Sets voltage 1 or voltage 2 to the indicated value (SET
value; BCD format)
©
Example: SU1:1.23
©
SU2:12.34
SI1 + SI2
Format: SI1:A.mAmAmA or SI1:0.123
SI1:A.mAmAmA or SI1:0.123
Function: Sets current limit 1 or current limit 2 to the indicated
value (LIMIT value; BCD format)
©
Examples: SI1:1.000
©
SI2:0.123
RU1 + RU2
Format: RU1 or RU2
Reply: U1:12.34V or U2:12.34V
is on and all operating controls
U1 = 1.23 V
U2 = 12.34 V
I1 = 1.000 A
I2 = 0.123 A
R e m o t e c o n t r o l
Function: The voltage values sent back by the HM8143 are
the programmed voltage values. Use the MUx com-
mands to query the actual values.
RI1 + RI2
Format: RI1 or RI2
Reply: I1:+1.000A or I2:–0.012A
Function: The current values sent back by the HM8143 repre-
sent the programmed limit values for the current.
Use the MIx commands to query the actual current
values.
MU1 + MU2
Format: MU1 or MU2
Reply: U1:12.34V or U2:12.24V
Function: The voltage values sent back by the HM8143 repre-
sent the actual voltage values last measured at the
outputs. Use the RUx commands to query the voltage
values set.
MI1 + MI2
Format: M11 or M12
Reply: I1=+1.000A or I2=–0.123A
Function: The current values sent back by the HM8143 repre-
sent the actual current values last measured. Use
the RIx commands to query the programmed current
limit value. If the outputs are switched off, then the
reply will be I1: 0.000 A.
TRU
Format: TRU:VV.mVmV
TRU:VV.mVmV
Function: Sets voltage 1 and voltage 2 to the indicated value
(voltage values in TRACKING mode). The values
must follow the BCD format.
©
Examples: TRU:1.23
©
TRU:01.23
©
TRU:12.34
TRI
Format: TRI:A.mAmAmA
TRI:A.mAmAmA
Function: Sets current 1 and current 2 to the indicated value
(LIMIT values in TRACKING mode). The values must
follow the BCD format.
©
Examples: TRI:1.000
©
TRI:0.123
STA
Format: STA
STA?
Reply: OP1/0 CV1/CC1 CV2/CC2 RM0/1
Function: This command causes the HM8143 to send a text-
string containing information of the actual status.
OP0 The outputs are switched off.
OP1 The outputs are switched on.
CV1 Source 1: constant voltage operation
CC1 Source 1: constant current operation
CV2 Source 2: constant voltage operation
CC2 Source 2: constant current operation
RMI Device in remote control mode
RM0 Device not in remotecontrol mode
Example: If the outputs are on, the HM8143 answers for
example with the following string (channel I is in
constant voltage mode and channel II is in constant
current mode:
U1 = U2 = 1.23 V
U1 = U2 = 1.23 V
U1 = U2 = 12.34 V
I1 = I2 = 1.000 A
I1 = I2 = 0.123 A
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Subject to change without notice