7.2.3 Transition: Remote Control
⇔
Local Control
On transmitting the command “*REM” from the personal computer the counter is in the state
of remote control which is indicated by the LED “REM” [8]. Afterwards a control of the unit
by the local control elements is not possible.
There are several ways for switching from remote control to local control of the unit:
- by transmitting the command “*GTL” (Go To Local) from the personal computer,
- by pressing the button “MEAS/LOCAL” at the counter if the unit keyboard have not
been locked by the command “*LLO” (Lock Local Out),
- by switching off and on the power switch POWER [1].
7.3 Messages of the Unit on Remote Control
After receiving a command containing a question-mark “?” the control device transmits a
respective information of the following structure: “_NZK”,
with _
blank
character,
N
description for the message,
Z
the
message,
K
end character LF (ASCII:
∅
AH).
The description “N” can be different and can be divided into the following groups.
7.3.1 Description of the Unit State
“IDN”
Indicates that an identification word follows.
“STB”
Indicates that a status byte of the unit follows.
7.3.2 Description of the Result
“VAL”
Indicates that the measuring value will follow in the “_TVK” format
with
_
blank character
(ASCII: 2
∅
H),
T
measuring unit
(Hz, S, -),
V
the number in free format,
K
the end character LF
(ASCII
∅
AH).
7.3.3 Description of the Unit Settings
“FCE”
indicates that a message about the unit settings follows
“GT”
signalizes that a message about the measuring time follows
“ATT:”
means that a message about the setting of the voltage divider follows
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Operating Instructions UZ 2400
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