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MJ400215A1

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Thermal Digital Mass Flow Meter / Controller

EX-250S

RS-485 Communications

Instruction Manual

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Summary of Contents for EX-250S

Page 1: ...MJ400215A1 0 Thermal Digital Mass Flow Meter Controller EX 250S RS 485 Communications Instruction Manual...

Page 2: ...S 10 12 WLFD Setting of the display cut setting 0 shown if within 1 F S 10 13 RALM Acquisition of the alarm occurrence status 10 14 ZERO Execution of sensor zero adjustment 10 The following are comman...

Page 3: ...ow rate setting method to digital 0 in accordance with the procedure described below To return to control by analog input change it to analog 1 again Reference 5 Command Details 21 WFSM Setting of the...

Page 4: ...e current inputs analog signals Fully open Control 1 Fully open 0 Flow rate setting method Analog 1 Valve open close input analog signal Fully close 15V Control OPEN Fully open 15V The valve status di...

Page 5: ...pment Using the switch SW2 on the top of the equipment set a communication ID 1 9 for each piece of the equipment When setting an ID ensure that IDs do not overlap among the equipment and are unique o...

Page 6: ...is sent 001 099 Fixed length 3 bytes Command Specify a character string to indicate a command type Fixed length 4 bytes For details see the next section Data Variable length according to command types...

Page 7: ...s Command A character string to indicate a command type contained in the command message For details see the next section Fixed length 4 bytes Exit code A character string to indicate a result of the...

Page 8: ...es and flow rate unit Data Command None Response Decimal 4 digits fixed length 4 bytes Range 0001 9999 2 RDPP Acquisition of the flow rate decimal point position number of decimal places The flow rate...

Page 9: ...isition of the instantaneous flow rate significand The instantaneous flow rate significand is acquired This is used to calculate the instantaneous flow rate together with the flow rate decimal point p...

Page 10: ...mode 0 Other than above 9 RCFM Acquisition of the CF value in the user custom CF mode The CF value in the user custom CF mode is acquired This is expressed always based on N2 nitrogen 1000 regardless...

Page 11: ...hin 1 F S Data Command Decimal 1 digit fixed length 1 byte 0 Disable No display cut 1 Enabled Forced indication of 0 Response None 13 RALM Acquisition of the alarm occurrence status The alarm occurren...

Page 12: ...000 in units of 0 1 17 RSFR Acquisition of the set flow rate significand The set flow rate significand is acquired This is used to calculate the set flow rate together with the flow rate decimal point...

Page 13: ...t fixed length 1 byte 0 Digital 1 Analog 21 WFSM Setting of the flow rate setting method Set the flow rate setting method Data Command Decimal 1 digit fixed length 1 byte 0 Digital 1 Analog Response N...

Page 14: ...ition number of decimal places and flow rate unit Data Command Decimal 4 digits fixed length 4 bytes Range 0000 full scale flow rate significand However setting less than 2 of the full scale flow rate...

Page 15: ...sensor auto zero is acquired Data Command None Response Decimal 1 digit fixed length 1 byte 0 Disabled 1 Enabled 29 WAZS Setting of the senor auto zero Set the sensor auto zero Data Command Decimal 1...

Page 16: ...s are presented below Full scale flow rate significand 3000 Flow rate decimal point position number of decimal places 1 1 digit Flow rate unit 0 cc Full scale flow rate 300 0 cc Instantaneous flow rat...

Page 17: ...MJ400215A1 16 URL http www kofloc co jp...

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