4
MVD100
User’s manual
4.
m
easuring
moDe
Set C1 to the « Measuring Mode» position, then press the K1 key once. When in measuring mode
the display consistently shows the percentage load on the load cell.
In measuring mode, the actual digital values determined are consistently compared with all 3 set
values, and switching signals are triggered via the output relays in case of coincidence.
The hysteresis value is subtracted from the set value. The difference is the value at which the relay
concerned releases.
Example:
S1 = 50.0%
H1 = 2.0%
S1-H1 = 48.0%
The relay switches are at 50% of full load when the measurement value is rising. When being
unloaded, the relay switches off at 48% of full load.
The parameters T1, T2 and T3 constitute the turn-on delay times after which the relays are activated.
5.
s
erial
interface
The serial interface (optional) of the processor (RS 232) allows to read out the actual data in the form
000% to 999% F.S. The end value is
not
identical to the load rating of the load cell, but instead is
the weight value at which the system has been calibrated.
In addition, this interface provides the possibility to program the device via PC.
5.1
t
ransmission
control
protocol
Interface configuration: 9600, 8, n, 1 without handshake
5.1.1.
m
easuring
Data
collection
Host
dIrectIon
mvd100
enq (0x05)
STX (0x02)
Sign (“+” or “-”)
10
2
sensor utilization [%]
10
1
sensor utilization [%]
10
0
sensor utilization [%]
Separator “ : ”
1
st
switching point (“0” or “1”)
2
nd
switching point (“0” or “1”)
3
rd
switching point (“0” or “1”)
Check number (MSB)
Check number (LSB)
ETB (0x17)
