MMR SB1000 - Communications Protocol and System Commands

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41 Daggett Drive, San Jose, CA 95134
Phone: +1 (650) 962 9620 Fax: +1 (650) 962-9647 Email: info@mmr-tech.com Web: www.mmr‐tech.com
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GeneralOperation
Communications Protocol
MainCommunicationsType: Serial
CommunicationsInterfaces: RS232,USB1.0
SerialSettings: 9600,N,8,1
Handshaking: HardwareRTS/CTS
Echo: Yes
BusPairing: Parallel
HardwareCTSTimeout: 1000ms
DataFormat: ASCII/PlainText
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SystemCommands
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Command Format Example Description
SM SMX SM1(1‐7)AveragingParameter2^nReadings StartMeasurement
GV GVX GV1(1or2)Validwhenunitisinstandby. GetVoltage
SH SHXXX SH300(300mW) SetHeater
N N1 GetDeviceID
O O1 PowerDownUnit
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Note:SendingcommandSMxstartsconstantmeasurementatdesiredaveragerate.
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Communications&ByteOrder
CommandExample:'SM2'(startsmeasurementat2^2=4readingsperaverage)
1/.SetRTSHigh
2/.WaitforCTS
3/.Send'S'asaCharacter(VBExampleonNextPage)
4/.Send'M'asaCharacter(VBExampleonNextPage)
5/.SendAverageasa2‐ByteWord(Highbyte
First,LowbyteSecond)
6/.SetRTSLow
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