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Sencon SI9500 User Manual Download Page 36

7.7  FORMAT OF MESSAGE TRANSMITTED 

 

The format of the message sent is dependant on the settings of the 
appropriate DIP switches, and the mode of communication selected.  If all 
options are selected the message is as follows: 
 
<20h><4Ch><LINE NUMBER><20h><54h><LACQUER 
NUMBER><20h><57h<FILM WEIGHT> 
 
where: 

<20h>  

 

 

(1 byte) 

ASCII ' ' 

<4Ch> 

  

(1 byte) 

ASCII 'L' 

<LINE NUMBER>    

(2 bytes) 

ASCII characters for 

digits,  

 

 

   

 

 

 

eg, 99 = 

'9' '9' 

<20h> 

  

(1 byte) 

ASCII ' ' 

<54h> 

  

(1 byte) 

ASCII 'T' 

<LACQUER NUMBER>   (2 bytes) 

ASCII characters for 

digits, 

eg, 55 = '5' '5' 

<20h> 

 (1 byte) 

ASCII ' ' 

<57h> 

 (1 byte) 

ASCII 'W' 

<FILM WEIGHT> 

 (5 bytes) 

ASCII characters for 

digits in readings, with a decimal 
point in between second and third 
digit. 
eg.  10.47 =  ASCII '1' 

ASCII '0' 
ASCII '.' 
ASCII '4' 
ASCII '7' 

If either the LINE NUMBER or LACQUER NUMBER options are not selected 
then the appropriate header and associated message are not transmitted. 
 
If neither the LINE NUMBER or the LACQUER NUMBER option is selected 
then the two byte header before the actual film weight reading is not sent. 
 
When bi-directional communications are used an end-of-data byte is 
transmitted when the whole buffer has been sent.  This byte is also sent if the 
buffer is empty when the data request message is received. 
 
End-of-data byte: 

<04h> 

 
 

Summary of Contents for SI9500

Page 1: ...SI9500 Digital Film Weight Gauge User Manual REF OPERATION MANUAL No 092 00600 08 LANGUAGE ENGLISH REVISION 8 ...

Page 2: ...HANNEL MODE 17 3 1 OVERVIEW 17 3 2 SELECTING THE CHANNEL 17 3 3 CALIBRATING THE CHANNELS 17 3 4 TAKING READINGS 18 3 5 READING FAULTS 18 4 USING THE INSTRUMENT IN CUSTOM CHANNEL MODE 19 4 1 OVERVIEW 19 4 2 SETTING UP A LACQUER TYPE 19 4 3 CHANGING A SET UP VALUE 20 4 4 ERASING A SET UP VALUE 20 4 5 CALIBRATING A LACQUER TYPE 20 4 6 FREQUENCY OF CALIBRATION 21 4 7 TAKING READINGS 21 4 8 READING FAU...

Page 3: ...9500 WITH A COMPUTER 32 7 1 GENERAL 32 7 2 COMPUTER PORT CONNECTIONS 32 7 3 SETUP COMPUTER PORT 33 7 4 SETTING DATA FORMAT AND SPEED 35 7 5 UNI DIRECTIONAL PROTOCOL 35 7 6 BI DIRECTIONAL PROTOCOL 35 7 7 FORMAT OF MESSAGE TRANSMITTED 36 7 8 ERROR MESSAGES 37 8 APPENDIX 1 38 9 APPENDIX 2 42 10 SI9507 FINISHED CAN PROBE 43 11 ADDENDUM 44 11 1 MULTI POINT CALIBRATION 44 11 1 1 Introduction 44 11 1 2 S...

Page 4: ...y The person responsible for the instrument should read this manual particularly Chapter 2 and then either Chapter 3 or Chapter 4 depending upon the chosen operating mode When this has been done the following quick guide may be used as a reminder of the sequence of operations ON THE FRONT COVER Top picture SI9500 Film Weight Gauge Bottom picture Left view SI9505 Flat sheet probe Top middle view SI...

Page 5: ...lay if not press END and try set up mode again then enter PASSWORD 9963 if unchanged B Press LACQUER NUMBER will appear in the small display C Enter new lacquer number by using NUMBER KEYS D Press ENTER will appear on large display E Enter set piece value by using NUMBER KEYS F Press ENTER G Press END 3 TO CALIBRATE A LACQUER TYPE A Press CALIBRATE B Press LACQUER NUMBER will appear in the small d...

Page 6: ...t separated only by the lacquer film under test The capacitance will be proportional to the separation between probe and substrate i e lacquer thickness if the probe tip dimensions and dielectric strength of the lacquer are constant Unfortunately different formulations of lacquer exhibit different dielectric strengths it is therefore necessary to use the instrument as a comparator to establish fil...

Page 7: ...particular lacquer type In use the user selects the channel lacquer number that has been previously set to the lacquer type that is being measured It is worth noting that all settings are permanently retained in the units memory until they are erased or re set Of these two modes custom channel mode offers the greatest accuracy but imposes the requirement of having to undertake a set up procedure o...

Page 8: ...ded inside the instrument to change it between 110V and 220 240V operation this can be identified by referring to Appendix 1 Carefully read all instructions in Appendix 1 before changing this switch position and take note that the voltage label must be changed and the colour code of the mains lead could potentially cause subsequent confusion with resultant damage to the instrument 220 240V models ...

Page 9: ... an integral lead that can be connected directly to the probe socket on the side of the instrument case The probe lead cannot be inadvertently fitted into any of the other sockets If a non Sencon probe is used it will be necessary to use a probe adapter lead available from Sencon This connects into the probe socket and is terminated with a 4mm banana plug and a crocodile clip the plug should conne...

Page 10: ... test piece The optional Sencon footswitch is supplied complete with a lead that will connect into the footswitch socket on the side of the instrument case 2 4 IDENTIFICATION OF KEYS AND DISPLAYS The various keys and displays are shown on the adjacent photo and will be described in detail in later chapters They are generally used as follows Foot switch ...

Page 11: ...OPERATION KEYS NUMERIC KEYPAD ...

Page 12: ...ect between measure calibrate and set up mode change channel lacquer numbers clear incorrect keystrokes and by using the up and down keys select a channel or lacquer number 2 5 SWITCH ON AND SELF TEST The mains on off switch on the back of the instrument case is a push on push off type When the unit has been plugged in it may be switched on and a self test routine will be initiated First the integ...

Page 13: ...be returned to Sencon for repair 2 7 MASTER RESET In the event of a major change error or fault it may become necessary to completely reset the instrument This is always required when the operating mode is changed A reset will erase all stored settings and readings from the units memory To perform a master reset proceed as follows A Switch off power to the unit B Simultaneously hold down the ENTER...

Page 14: ...readings A line number must then be entered to which readings will be related until the next line number is entered A range of line numbers from 0 to 99 is allowed thus enabling this facility to be used for other purposes i e machine number or reading position etc To select the line number prompt internal switch 1 position 2 should be closed Refer to Appendix 1 for instructions on accessing and id...

Page 15: ... PASS displayed The four digit passcode should now be entered and if keyed in correctly the unit will be in set up mode If entered incorrectly the instrument will drop back to measure mode 2 12 CHANGING THE PASSCODE To change the passcode it is necessary to first enter set up mode using the current passcode then simultaneously press LACQUER NUMBER and CALIBRATE again The display will show question...

Page 16: ...et required and the lacquer number display will indicate CP C Press the ENTER key The display should indicate zero D Press the END key twice The instrument will then drop back to measure mode Probes should be calibrated whenever they are changed and at periodic intervals dependant upon the type of probe its condition and amount of use By monitoring the amount of offset required to re calibrate the...

Page 17: ...robe and the reading noted do not forget to clip the crocodile clip to the substrate of the sample If the displayed reading is below the actual value of the sample press the up arrow key to increase the channel number as indicated by the lacquer number display until the nearest reading is found If the displayed reading is above the actual value of the sample press the down arrow key until the clos...

Page 18: ... known sample or a reading is significantly different to the expected value then check the following 1 The probe crocodile clip is making good contact with the metallic substrate of the sample 2 The probe is being used correctly i e square to the sample with the correct pressure applied 3 The probe tip is clean and undamaged 4 Probe connections are O K and operators hands are not in contact with c...

Page 19: ...multaneously press CALIBRATE and LACQUER NUMBER followed by the 4 digit password When this has been done the SET UP indicator will illuminate and the lacquer number display will show the last used lacquer number or if none are programmed it will show lacquer number 1 Next press the LACQUER NUMBER key the display will indicate two question marks and a number in the range 1 to 99 must now be chosen ...

Page 20: ... lacquer number in set up mode as described in 4 2 then press the CLEAR key Use the END key to leave set up mode 4 5 CALIBRATING A LACQUER TYPE Having set up a lacquer number with its set piece value it is then necessary to store the calibration setting for that particular lacquer type To enter CALIBRATION mode from MEASURE mode press the CALIBRATE key the CALIBRATE indicator will illuminate Then ...

Page 21: ...the film weight will be indicated on the display 4 8 READING FAULTS If the FAULT indicator illuminates or the display reads Poor then a pinhole or missing lacquer exists on the sample currently being measured If the reading is significantly different to the expected value check the following A The probe crocodile clip is making good electrical contact with the metallic substrate of the sample B Th...

Page 22: ...large display if not press END and try set up mode again then enter PASSWORD 9963 if unchanged B Press LACQUER NUMBER will appear in the small display C Enter new lacquer number by using NUMBER KEYS D Press ENTER will appear on large display E Enter set piece value by using NUMBER KEYS F Press ENTER G Press END 3 TO CALIBRATE A LACQUER TYPE A Press CALIBRATE B Press LACQUER NUMBER will appear in t...

Page 23: ...d is available in units with software version 1 17 and higher The version can be displayed by pressing CLEAR and END simultaneously while in Measure mode Setting for Multi Point Calibration Refer to appendix 1 of your manual sections A1 2 A1 5 and A1 6 Switch position 4 should be closed This will enable the multi point calibration facility Operation 1 Press CALIBRATE to enter calibration mode 2 Se...

Page 24: ...st for a nominal charge For further details please contact your appropriate sales centre 5 2 FACTORS AFFECTING ACCURACY The instrument is effectively measuring capacitance formed at the probe tip as described in section 1 2 Unfortunately the probe creates a relatively unstable capacitor resulting in instability in the reading being displayed This is particularly noticeable if the unit is set to di...

Page 25: ...ity for the performance or settings of a particular printer A word of caution is required regarding the RS232 interface Firstly most printers intended for office use are fitted as standard with a parallel or centronics interface this is not suitable for connection to the SI9500 so the requirement for RS232 interface must be clearly stated to your supplier Secondly it must be accepted that the RS23...

Page 26: ...OLOUR 1 GROUND BLUE 2 TxD TRANSMIT DATA RED 3 CTS CLEAR TO SEND YELLOW 6 3 1 THE EPSON FX OR EX PRINTER This printer will need to be fitted with the Epson 8143 serial interface which offers a 25 way D type female connector The wire connection is as follows SI9500 PIN COLOUR EPSON PIN 1 BLUE 7 2 RED 3 3 YELLOW 11 It should be noted that a number of other printers share this type of connector and pi...

Page 27: ...N 1 BLUE Signal Ground or 0 V Not to be confused with screen or protective ground which may be a different pin 2 RED TxD or Transmit Data This is the wire that carries the data signal with respect to 0 V out of the SI9500 3 YELLOW CTS or Clear to Send This signal is generated by the printer and is used to stop and start the flow of data from the SI9500 It must be connected as its default state is ...

Page 28: ...ter fitted with the 8143 serial interface has a bank of 8 small switches on the interface board that are used to select the transmission format This switch bank is market SW1 and should be set as below to achieve the correct format and 1200 baud SWITCH NAME SWITCH FUNCTION NO 1 1 JB3 OFF BAUD RATE SELECTION 1 2 J8 7 OFF WORD LENGTH 1 3 JB1 OFF BAUD RATE SELECTION 1 4 JB2 OFF BAUD RATE SELECTION 1 ...

Page 29: ...ual The SI9500 does allow the baud rate to be changed between 300 1200 and 9600 baud We recommend the use of 1200 baud as this provides the optimum compromise between printout speed and reliable operation 6 5 ENABLING THE PRINTOUT The SI9500 is shipped with its printer port disabled This is to prevent the SI9500 from attempting to send data to a non existent printer and subsequently reporting a co...

Page 30: ... the readings for each can being neatly separated on the printout For flat sheet measurements horizontal headings can be selected causing the three columns to be headed LEFT CENTRE RIGHT Again the number of rows are selected to correspond with the number of positions on the plate that readings are taken Vertical Headings TOP MIDDLE BOTTOM are selected by internal switch 1 4 being open and horizont...

Page 31: ...ed is turned off or has some other problem the transmission will not take place and the word busy will remain until the printer problem has been corrected or the CLEAR key is pressed If the word busy appears check that the printer is OK ie no paper jam etc check that it is on line check the cable and connections and check the printer set up If the printout takes place but not correctly check that ...

Page 32: ...o be necessary to have software produced for the computer that is capable of receiving and understanding the data from the SI9500 It can either be used in bi directional or uni directional mode Internal switches are used to select between RS232C RS422 and RS485 communication standards 7 2 COMPUTER PORT CONNECTIONS Serial Port 2 is the 4 way connector on the side of the SI9500 see section 2 2 The p...

Page 33: ... is required then jumper settings on the EMC board need to be made The following figure shows the position of all connectors as well as the EMC board location Figure a1 Rear View of Gauge Figure a3 Internal View of Gauge Figure a2 Left Hand View of Gauge On Off button Mains lead EMC board Foot switch Computer Printer Probe ...

Page 34: ...r RS485 computer protocols are required make sure the two sets of jumpers are lined up horizontally For RS232 protocol the jumpers should be aligned vertically See the diagrams a3 a4 and a5 Replace the base cover to the unit and re fix The unit may now be used with the computer protocol which has been set up Jumper setting is vertical RS232 Change both sets of jumpers to the same orientation as sh...

Page 35: ...RS232 RS422 RS485 J1 C A B J2 B A A J3 B A A If RS422 or RS485 is to be used the plug connecting the socket on the rear panel to the top circuit board should be moved from P2 to P3 These connectors are marked on the circuit board 7 5 UNI DIRECTIONAL PROTOCOL As each reading is saved it is automatically sent down the serial port if the hardware handshaking line is clear 7 6 BI DIRECTIONAL PROTOCOL ...

Page 36: ...SCII 57h 1 byte ASCII W FILM WEIGHT 5 bytes ASCII characters for digits in readings with a decimal point in between second and third digit eg 10 47 ASCII 1 ASCII 0 ASCII ASCII 4 ASCII 7 If either the LINE NUMBER or LACQUER NUMBER options are not selected then the appropriate header and associated message are not transmitted If neither the LINE NUMBER or the LACQUER NUMBER option is selected then t...

Page 37: ...LEAR key can be pressed FULL will flash on the large display when the internal buffer is full The message will clear automatically when space is available in the buffer ie after a message is sent If CLEAR is pressed the oldest data not sent in the buffer will be overwritten next time a reading is saved NOTE RS485 communications facilities are not available They will be implemented at a later date ...

Page 38: ...th cable this should be left intact and the baseplate moved to one side so the internal circuits can be seen Care should be taken not to damage the sealing gasket on the bottom flange A1 3 VOLTAGE SELECTION The voltage selection switch is a black slider switch mounted on the circuit board in the vicinity of the main cable entry The circuit board is marked with 110 and 220 showing the positions of ...

Page 39: ...onal Computer Protocol Uni Directional 4 Multi Point Calibration Normal Calibration 5 Not Used 6 Not Used 7 Not Used 8 Not Used A1 7 CHANGING UPPER BOARD SWITCH SETTINGS Two banks of switches are used each with 8 positions Both are mounted on the upper smaller circuit board and are easily identified as rectangular red blocks with 8 white switches The switch block nearest to the cable entry and fus...

Page 40: ...mpted for Line number prompted for S1 3 Lacquer number not transmitted Lacquer number transmitted S1 4 Printed Header Vewrtical Printer Header Horizontal Number of Print Rows S1 5 S1 6 ROWS OPEN OPEN 1 OPEN CLOSED 2 CLOSED OPEN 3 CLOSED CLOSED 4 Enable Printout and define Baud Rate S1 7 S1 8 FUNCTION OPEN OPEN PRINTER OFF OPEN CLOSED 9600 BAUD CLOSED OPEN 1200 BAUD CLOSED CLOSED 300 BAUD ...

Page 41: ...its OPEN CLOSED CLOSED 7 data bits odd Parity 1 Stop Bits CLOSED OPEN OPEN 8 data bits No Parity 2 Stop Bits CLOSED OPEN CLOSED 8 data bits No Parity 1 Stop Bits CLOSED CLOSED OPEN 8 data bits Even parity 1 Stop Bits CLOSED CLOSED CLOSED 8 data bits Odd Parity 1 Stop Bits Computer Transmission Baud Rate S2 6 S2 7 S2 8 BAUD RATE OPEN OPEN OPEN 76800 CLOSED OPEN OPEN 38400 OPEN CLOSED OPEN 19200 CLO...

Page 42: ... accompanied by fault indicator illuminating see section 4 8 4 BUSY The SI9500 is waiting for the printer see section 6 7 5 BUFFER NEARLY FULL Scrolling computer buffer is 90 full see section 7 7 6 FULL Flashing computer buffer is full see section 7 7 7 OL An internal overload has occurred remove probe from sample to clear 8 VOID A valid reading is not being obtained from the sample see section 3 ...

Page 43: ...on of the probe tip 3 The 5 pin connector should be inserted in the probe socket on the side of the SI9500 4 The crocodile clip should be used to make good electrical contact with the metal of the can being tested 5 Care should be taken to ensure metalwork of the probe arm does not contact the can during the test SENCON UK LIMITED UNIT P BLACKPOLE TRADING ESTATE WORCESTER WR3 8SG TEL 01905 755525 ...

Page 44: ...e in units with software version 1 17 and higher The version can be displayed by pressing CLEAR and END simultaneously while in Measure mode 11 1 2 Setting for Multi Point Calibration Refer to appendix 1 of your manual sections A1 2 A1 5 and A1 6 Switch position 4 should be closed This will enable the multi point calibration facility 11 1 3 Operation 1 Press CALIBRATE to enter calibration mode 2 S...

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