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DRA-DCC-8

DIGITAL TO 8 CURRENT LOOP CONVERTER

User’s Guide

http://www.omega.com

e-mail: [email protected]

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Summary of Contents for DRA-DCC-8

Page 1: ...DRA DCC 8 DIGITAL TO 8 CURRENT LOOP CONVERTER User sGuide http www omega com e mail info omega com...

Page 2: ...02 Certified Broughton Astley Leicestershire Irlam Manchester LE9 6TU England M44 5EX England Tel 44 1455 285520 Tel 44 161 777 6611 FAX 44 1455 283912 FAX 44 161 777 6622 Toll Free in England 0800 48...

Page 3: ...Interface 6 2 The E ENABLE Terminal 7 SERIAL CONTROL MODE 7 1 RS232c RS422 Select 7 2 RS422 Termination 7 3 Serial Control Switch Settings 7 4 Serial Communication Parameters 7 4 1 Baud Rate Select 7...

Page 4: ...river Press down gently on the plastic springloaded tabs located in the slots either side of the unit c Disconnect the flat connector which couples the LED circuit on the front panel d Replace the blo...

Page 5: ...y an internal array of 8 DIP switches as follows 4 20 or 0 20mA output current mode Parallel control mode Serial control mode Self test mode 5 1 0 20 OR 4 20mA OUTPUT CURRENT MODE Two current output s...

Page 6: ...ture The data should be valid for at least 160 microseconds S1 S2 S3 S4 S5 S6 S7 SELF TEST 1 ON OFF X OFF X OFF ON OFF X MODE ON ON OFF X SELF TEST 2 SELF TEST 3 S1 S2 S3 S4 S5 S6 S7 PARALLEL MODE OFF...

Page 7: ...election is carried out by controlling the E inputs 7 SERIAL CONTROL MODE Figure 3 7 1 RS232c RS422 SELECT he DRA DCC 8 is equipped with two serial communication ports The RS232c and the RS422 A jumpe...

Page 8: ...cknowledgment stating the DRA DCC 8 ID number and the addressed channel number Status report Three types of command formats are available 7 4 3 1 WITHOUT ECHO BACK FORMAT A ID CODE CHANNEL VALUE CR Th...

Page 9: ...T S ID CODE CR The addressed DRA DCC 8 unit will respond with the values stored in its eight channels The response will start with S ID code following with eight channel values separated with commas a...

Page 10: ...in a multidrop configuration using the RS422 communication port The controller s RS 422 transmitter is connected to the units receivers while the controller s RS 422 receiver is connected to the units...

Page 11: ...2 Monitor all the 8 channels in 4mA state and calibrate the Zero trimmer so that their average readings is 4 000mA Then repeat for 20mA state and calibrate the Span trimmer so that their average read...

Page 12: ...Enable E 0 0 0 5V 4 1 60V 160 microsecond 6000 updates per second RS232c full duplex RS422 full duplex 300 4800 9600 19200 BPS Even One Reports as interrogated Up to eight units 8 continues current lo...

Page 13: ...EGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to...

Page 14: ...Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial pH Conductivity Equipm...

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