Manual

<6.OperationandParameters>
6-12
IM 11M10B01-01E
6.3 Communication
TheOX400hasRS232serialcommunicationasstandard.Oxygenconcentration,alarm,and
error information are transmitted via this communication. The following shows the communication
specications.
• CommunicationSpecications
Table6.1 CommunicationSpecications
Item Description
Communication method One-way (transmission only), asynchronous
Data format ASCII
Baud rate 38400 bps
Data length 8-bit
Parity None
Stop bit 1-bit
Flow control None
• Data Logging Packet
A A A A . A A A , B B B , C C C C , D D D D
CR
Data delimiter “,”
Terminate code
Figure6.15 CongurationofDataLoggingPacket
When communication terminal sends “TS” command to the OX400, OX400 will feed back data
loggingpacketperiodically(approx.200ms.)Whenyouwanttostopcomm,sendthestopcommand
“CR”. The content of the data logging packet has the following meanings.
Table6.2 ContentofData
Data Content
AAAA.AAA
Oxygenconcentrationvalue
BBB Unit
CCCC
Error(hexadecimaldisplay)
DDDD Alarm(hexadecimaldisplay)
1) Oxygen concentration value
 TheoxygenconcentrationvalueisdisplayedintheAAAA.AAAformatanduptothethree
decimal places are output.
(Note)Whentheoutputsmoothingisset,thesmoothedvaluebecomesanoxygenconcentration
value.
2) Unit
The unit is displayed in the BBB format. The output character is “%” or “ppm.”
3)Error
 TheerrorisdisplayedintheCCCCformat.Theoutputcharactersaredisplayedinhexadecimal
format, and Table 6.3 shows the error factors and output characters.