Cooper Instruments & Systems DFI 1550 Communications Manual Download

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DFI 1550/1650

COMMUNICATIONS GUIDE

Summary of Contents for DFI 1550

Page 1: ...DFI 1550 1650 COMMUNICATIONS GUIDE...

Page 2: ...Introduction 4 3 2 Baud Rate Start Bits Stop Bits and Parity 4 3 3 Differences between Instruments 4 3 4 Two Types of Commands 5 3 4 1 System Commands 5 3 4 2 Channel Commands 5 3 5 Addressing 5 3 6...

Page 3: ...duction 23 8 2 Descriptions 23 Chapter 9 AC AC LVDT Input Channel Commands 30 9 1 Introduction 30 9 2 Descriptions 30 Chapter 10 High Level Input Channel Commands 36 10 1 Introduction 36 10 2 Descript...

Page 4: ...menu items Indicates that what follows is an item from a sub menu such as SYSTEM MENU DIAGNOSTICS DATA Commands sent to or replies from the instrument The carriage return character ASCII code decimal...

Page 5: ...uage called SensoCode This provides great flexibility which allows the DFI Series to do many jobs which otherwise requires a personal computer or PLC 1 4 What is Calibration 1 4 1 Overview A small int...

Page 6: ...n male or an IBM 9 pin male RS 232 serial connector Remember that all personal computer serial ports have male connectors Parallel printer ports have female connectors RS 422 or RS 485 serial ports ar...

Page 7: ...ELLO WORLD The instrument will acknowledge with OK and the characters HELLO WORLD III should be displayed on the instrument s front panel Chapter 3 Command Format 3 1 Introduction All DFI instruments...

Page 8: ...is shown below 0002WK0169 89 where is called the attention character which alerts all instruments that a command is being transmitted to them This character is ASCII code decimal 35 00 is the two cha...

Page 9: ...arameter W command or when a function F command has been completed ERROR which is sent when an instrument has been asked to perform an invalid command or when invalid information is given with a write...

Page 10: ...rriage Return See Command Format for further information If the address sent by the DTE matches the address of the instrument and the command string is valid then the instrument pulls the DSR line low...

Page 11: ...interface Wire up one and only one slave instrument to the communications loop z according to the wiring diagrams in this chapter 2 Determine the address used by this DFI instrument factory default i...

Page 12: ...ations bus uses one pair of wires to allow up to 32 devices to send and receive data A two wire RS 485 system is a half duplex system which means that no device can transmit and receive data at the sa...

Page 13: ...send it the command string 00W401 followed by a carriage return Chapter 6 Application Programs 6 1 Introduction This chapter provides several programming examples and hints for using serial communicat...

Page 14: ...CF 126 11 Nov 2001 Next select the serial port you wish to connect with Finally configure the serial port parameters as shown below...

Page 15: ...omputer Both QBasic and QuickBasic can only access ports COM1 and COM2 Two sample programs for Microsoft QuickBasic can be located on Sensotec s web site at http www sensotec com scprograms 084 1031 0...

Page 16: ...documented and do not always work in a consistent way across Win32 operating systems 6 6 2 Third party Libraries Another way of using serial communications with a CIC program is by purchasing a third...

Page 17: ...wer Up Display Value RR Read Firmware Revision RS WS Read Write Channel to Display ZM Read Scan Time ZX Temporarily Suppress Continuous Transmissions ZY Read Configuration 7 3 Descriptions F0 Transmit...

Page 18: ...IT LATCHING menu item set to ON Latched limits may also be cleared by pressing the front panel CLEAR button or by using the Function Input 2 pin on the rear panel System Connector This command does no...

Page 19: ...ply none Remarks Do not pass GO Do not collect 200 Monopoly W1 Write Baud Rate Purpose Writes a new baud rate for serial communications Usage aaW1n is the pound or hash character ASCII decimal 35 aa i...

Page 20: ...e setup menus 2 Press and release DOWN until the display reads SERIAL COM MENU Press ENTER to enter the SERIAL COM menu 3 Press and release DOWN until the display reads ADDRESS Press ENTER and the dis...

Page 21: ...512 ON 1 03 768 04 1024 05 1280 Latching Value 06 1536 OFF 0 07 1792 ON 2 08 2048 09 2304 Source Value 10 2560 TRACK 0 11 2816 PEAK 4 12 3072 VALLEY 8 13 3328 14 3584 15 3840 16 4096 Energize Value 17...

Page 22: ...ransmissions with baud rates greater than 2400 baud This is because Windows is so busy reading and displaying the received characters that it will not accept keyboard or mouse input It is a bad idea t...

Page 23: ...isplayed on the lower line When writing this parameter n is the channel to be displayed See ken for encoding information Using pp 80 reads writes display operation When writing this parameter n 0 enab...

Page 24: ...RR Reply A text string such as 084 1501 01 2 08 Remarks This command is useful when establishing or debugging communications because it generates a consistent reply RS WS Read Write Channel to Display...

Page 25: ...st the instrument can service the limits ZX Temporarily Suppress Continuous Transmissions Purpose Temporarily suppress or allow continuous transmissions Usage aaZMn is the pound or hash character ASCI...

Page 26: ...t Track Data Purpose To transmit the channel s tracking data value Usage aaccF0 is the pound or hash character ASCII decimal 35 aa is the two character instrument address cc is the two character chann...

Page 27: ...d or hash character ASCII decimal 35 aa is the two character instrument address cc is the two character channel number is the carriage return character ASCII decimal 13 Example 0001FA Reply 0012 5 typ...

Page 28: ...s DAC to 50 of full scale Reply OK or ERROR Remarks You might wish to force a channel s DAC to a certain output to help calibrate the attached data acquisition system or other device R5 W5 Read write...

Page 29: ...ansducer with the Shunt Calibration method R9 W9 Read write Excitation Voltage Setting Purpose Reads or writes the channel s EXCITATION menu item Usage aaccR9 to read aaccW9n to write is the pound or...

Page 30: ...13 Argument A number which selects a channel s value This number is created by adding together the values of the desired options as shown Channel Value Source Value 01 1 TRACK 0 02 2 PEAK 16 03 3 VALL...

Page 31: ...cter ASCII decimal 13 Parameters Arguments Using pp 00 accesses the AUTO ZERO and LINEARIZATION menu items When writing this parameter the argument n is a number which selects different operating feat...

Page 32: ...s after decimal point 2 5 digit bipolar display 0 Count by one digit 0 Enable display averaging 64 Sending 0008WQ66 will change display operation accordingly Reply When writing OK or ERROR When readin...

Page 33: ...I decimal 35 aa is the two character instrument address cc is the two character channel number n is the frequency response in Hz is the carriage return character ASCII decimal 13 Example 0001WU10 Repl...

Page 34: ...value Usage aaccFA is the pound or hash character ASCII decimal 35 aa is the two character instrument address cc is the two character channel number is the carriage return character ASCII decimal 13 E...

Page 35: ...address cc is the two character channel number n is the full scale value in engineering units is the carriage return character ASCII decimal 13 Example 0001W520000 Reply When writing OK or ERROR When...

Page 36: ...02 accesses the KNOWN POINT 2 3 and KNOWN POINT 3 5 menu items 03 accesses the KNOWN POINT 4 5 menu item 04 accesses the KNOWN POINT 2 2 KNOWN POINT 3 3 or KNOWN POINT 5 5 menu items Example 0001RK01...

Page 37: ...address c cc is the two character channel number n is the full Analog Output value in engineering units is the carriage return character ASCII decimal 13 0 Example 0001WO8000 Reply When writing OK or...

Page 38: ...nt address cc is the two character channel number n is the argument defined below is the carriage return character ASCII decimal 13 Argument The argument is created by adding together the values of th...

Page 39: ...ending 0002WT1 will accomplish this Reply When writing OK or ERROR When reading an ASCll floating point value described above Remarks If a disabled front panel button is pressed the message PROTECTED...

Page 40: ...shunt resistor to the transducer and transmit a reading Usage aaccF5 is the pound or hash character ASCII decimal 35 aa is the two character instrument address cc is the two character channel number...

Page 41: ...the two character instrument address cc is the two character channel number n is the argument defined below is the carriage return character ASCII decimal 13 Argument AUTO returns the DAC to its norma...

Page 42: ...r 5V or 10V input If the channel s Signal Type Jumpers are set for current the argument value must be 20 for 4 20mA input Example 0001W710 Reply When writing OK or ERROR When reading an ASCll floating...

Page 43: ...NT 4 5 menu item 04 accesses the KNOWN POINT 2 2 KNOWN POINT 3 3 or KNOWN POINT 5 5 menu items Example 0001RK01 Reply When writing OK or ERROR When reading an ASCll floating point value Changing this...

Page 44: ...cWOn to write is the pound or hash character ASCII decimal 35 aa is the two character instrument address cc is the two character channel number n is the full Analog Output value in engineering units i...

Page 45: ...ad write Display Formatting Purpose Reads or writes the operation of the channel s display formatting Usage aaccRQ to read aaccWQn to write is the pound or hash character ASCII decimal 35 aa is the tw...

Page 46: ...ptions as shown VALUE Value CLEAR Value ENABLED 0 ENABLED 0 DISABLED 8 DISABLED 4 CHANNEL Value TARE Value ENABLED 0 ENABLED 0 DISABLED 2 DISABLED 1 Example It is desired to disable the TARE button fo...

Page 47: ...t Valley Data Purpose To maintain compatibility with other types of channels Usage aaccFA is the pound or hash character ASCII decimal 35 aa is the two character instrument address cc is the two chara...

Page 48: ...haracter instrument address pp is the two numeric character limit number n is the limit RETURN POINT value is the carriage return character ASCII decimal 13 Example Sending 00WB04415 5 will change the...

Page 49: ...hannels Usage aaccF0 is the pound or hash character ASCII decimal 35 aa is the two character instrument address cc is the two character channel number is the carriage return character ASCII decimal 13...

Page 50: ...o 100 of its output Example 0009FH 5 will set channel 09 s DAC to 50 of its full scale Reply OK or ERROR Remarks You might wish to force a channel s DAC to a certain output to help calibrate the attac...

Page 51: ...in engineering units is the carriage return character ASCII decimal 13 Example 0001WO8000 Reply When writing OK or ERROR When reading an ASCII floating point value Chapter 13 Split Display Virtual Ch...

Page 52: ...RIGHT SOURCE menu items Usage aaccRspp to read aaccwsppn to write is the pound or hash character ASCII decimal 35 aa is the two character instrument address cc is the two character channel number pp...

Page 53: ...urn character ASCII decimal 13 Example 0001F1 Reply OK F2 Deactivate Tare Purpose To remove the offset from the channel s data values which was applied when tare was activated Usage aaccF2 is the poun...

Page 54: ...mber n is the four character units label is the carriage return character ASCII decimal 13 Example 000lW6CATS Reply When writing OK or ERROR When reading a four character string Changing this value do...

Page 55: ...panel button is pressed the message PROTECTED will appear on the display Warranty and Repair Policy LIMITED WARRANTY ON PRODUCTS Any of our products which normal operating conditions proves defective...

Page 56: ...All repairs of COOPER products are warranted for a period of 90 days from date of shipment This warranty applies only to those items that were found defective and repaired it does not apply to product...

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