Model 7280
TRANS CAL
Page 25
5. Remote
5.1 Serial interface
For the serial data transmission the 7280 measuring amplifier uses a RS232 or
an USB interface. The PC manages the USB interface as a virtual COM port.
For the use of the USB interface, must have a windows operating system (2k,
XP, Vista, 7) and the burster präzsionsmesstechnik gmbh & co kg USB driver
must be installed (see chapter 3 - further documentation). After the driver
installation, the virtual COM port can be used as described below.
Transfer rate / specification RS232 (V.24) / USB
Parity:
none
Number of data bits:
8 (1 Byte)
8N1
Stop bit:
1
Baud rate adjustable (2400, 4800, 9600, 19200, 38400, 115200 Baud)
In the USB mode, the baud rate in the 7280 measuring amplifier and the
connected device must match.
Protocol overview
Via the serial interface, the 7280 measuring amplifier can issue the measured values individually
or automatically. The commands can be send to the 7280 measuring amplifier via a termal
program or a PLC.
Following commands are available:
Command overview
ASCII
HEX
Description
in measuring
not in measuring
mode
mode
k
0x6B ENTER
I
0x6C
▲
m
0x6D
▼
n
0x6E ESC
A
0x41
Read-out data logger
C
0x43
Read-out current sensor parameters
D
0x44
Read-out status
E
0x45
Read-out complete status
g
0x67
Change protocol setup
0
0x30
Continuous measured value query (signed integer)
1
0x31
Query of max. value (signed integer)
2
0x32
Query of min. value (signed integer)
3
0x33
Tare of display
4
0x34
Reset max. value
5
0x35
Reset min. value
6
0x36
Actuate 100 % 100 % control signal -
for sensors with 100 % control resistance
7
0x37
Switch-off 100 % 100 % control signal
for sensors with 100 % control resistance
B
0x42
Delete data logger
a
0x61
Write time
b
0x62
Read-out time
c
0x63
Write company head
e
0x65
Write all sensor parameters (not supported yet)
f
0x66
Read-all sensor parameters (not supported yet)
In Menu 3: ADJUST
→
UNIT and ADJUST
→
DESIG the
adjustments can be changed by the commands “I” and “m”
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