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６．MEASUREMENT IN THE MOISTURE CONTENT(MC) MODE
MC mode of moisture content can be applicable to the wide range object relating to the resistance.
Select the connecting probe based on the electric characteristics of an object to be measured.
The changes of the electric resistance caused by the dry or the moisture of an object to be measured
are indicated by the values
「
1 to 100
｣
.
Classification and comparison can be easily checked by checking the relative comparison values.
Using probe
Measurement mode
Resolusion
For TG
MC-3
1 to 50
0.5 pitch ,
51 to 100 1 pitch
For KG
MC-2
1 to 100
0.5 pitch
For PM
MC-1
1 to 100
1 pitch
Optional probes suitable for an object to be measured other than 3 kinds of the standard probe(PA type)
can be prepared or fabricated.
Please contact us at the nearest branch for the details.
７．COMMUNICATION WITH PC
MR-300 has a function for the communication with PC (Connection to RS-232C).
The communication cable is attached as standard.
Transmission of the data is carried out with the ASCII code.
After transmission, wait until receiving the ACK[06H].
When other code than ACK[06H] is received or there are no response for 3 seconds, wait the receiving
after transmitting the data again.
When no ACK[06H] is received even after 3 times of transmission, stop the transmission as the
transmission error.
Notice: Communication with PC consumes much power, so the battery capacity will drop so fast.
Operations connecting the attached AC adapter are recommended.
1.Communicating method
：
Start
・
stop synchronizing
( = start
・
stop bit method)
2.Bit line
：
{1 start bit}
＋
{7 data bit}
＋
{1 parity bit}
＋
{2 stop bit}
3.Parity
：
Even-numbered parity
4.Communication speed
：
Select 1 out of 600, 1200, 2400, 4800, 9600 and 19200bps
5.Electrical characteristics of connecting part
：
Based on the subset of JIS-X5101(=RS232C)
6.Data format: ASCII code
STX
Command
Data
ETX
02H
X
03H
An output format is roughly divided into 4 kinds. A group of transmitting the data which begins with
STX[02H] is constructed with 1 letter' s command showing each output format followed by the data
and finally ETX[03H].
When data can be received in PC side normally, transmit the ACK[06H].
When the parity error or no data can be received normally, transmit NAK[15] to a Moisture meter.
When NAK is received by the Moisture meter and a response within 3 seconds is time out, repeat the
transmission of the data Max. 3 times(total 4 times).
Refer to the next "Communication output" for each output format.
