1103MU1 WEIGHT MCE2035 Standard Manual UK PDF
Contents
1. A DATA GND 24V 24VDC Vin GND 0 VDC GNDin I O The 10 pole connector J2 on the MCE2035 Profibus DP module has these connections MCE2035 J2 CON FUNCTION NECTER J2 1 J2 2 RS485 B DATA J2 3 12 4 RS485 A DATA J2 5 12 6 0 VDC GNDin J2 7 12 8 24VDC Vin J2 9 32 10 I O line Version 2005 11 10 rev 1 Page 22 Eilersen Electric women venna 9 2 2 MCE2535 Standard Connection The 2 pole connector J6 on the MCE2535 module is connected to 24VDC The 14 pole connector J7 on the MCE2535 module is connected to the 14 pole connectors on the loadcell interface modules MCE2510 using the supplied ribbon cable with mounted con nectors Through this bus cable the MCE2535 module supplies the loadcell modules with 3 3VDC and 24VDC and data can be transferred from the loadcell modules to the MCE2535 module The 2 pole connector J6 on the MCE2535 Profibus DP module has these connections MCE2535 J6 CONNECTOR CONNECTION J6 1 24VDC Vin J6 2 0 VDC GNDin The 14 pole connector J7 on the MCE2535 Profibus DP module has these connections MCE2535 J7 CONNECTER FUNCTION J2 1 J2 2 RS485 B DATA J2 3 J2 4 RS485 A DATA J2 5 J2 6 0 VDC GNDin J2 7 J2 8 24VDC Vin J2 9 J2 10 I O line J2 11 J2 12 0 VDC GNDin J2 132. J2 14 3 3VDC Version 2005 11 10 rev 1 Page 23 Eilersen Electric Be 9 3 DIP switch settings MCE2035 MCE2535 User manual This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type The Profibus DP module is equipped with a 4 pole DIP switch block that has the following function SWITCH FUNCTION Sw1 1 Sw1 4 Expected number of loadcells The expected number of loadcells is set as indicated below Note that these switches are only read at power up where the number of loadcells is indicated using Sw1 1 Sw1 4 as follows Swl 1 Sw1 2 Sw1 3 Swl 4 Number of loadcells OFF OFF OFF OFF 16 OFF OFF OFF ON 1 OFF OFF ON OFF 2 OFF OFF ON ON 3 OFF ON OFF OFF 4 OFF ON OFF ON 5 OFF ON ON OFF 6 OFF ON ON ON 7 ON OFF OFF OFF 8 ON OFF OFF ON 9 ON OFF ON OFF 10 ON OFF ON ON 11 ON ON OFF OFF 12 ON ON OFF ON 13 ON ON ON OFF 14 ON ON ON ON 15 In addition a 8 pole DIP switch block that has the following function SWITCH FUNCTION Sw2 1 Reserved for future use Sw2 2 Sw2 8 Selection of Profibus DP communication address The address is selected as the DIP switches are binary coded so Sw2 2 is MSB and Sw2 8 is LSB Note that these switches are only read during power on Version 2005 11 10 rev 1 Page 24 Eilersen Elect
3. Not used reserved for future use PVA Bytes 5 8 Parameter value PCD Process Data CTW Bytes 9 10 Master to Slave Control Word STW Bytes 9 10 Slave to Master Status Word MRV Bytes 11 14 Master to Slave Main Reference Value MAV Bytes 11 14 Slave to Master Main Actual Value In the following the meaning of the individual blocks in the telegram is described in detail The byte order MSB LSB first for the individual parts is selected using jumper JU8 and upon factory delivery it is default set to MSB byte first The data format of the MAV part and parameters in the PVA part is 32 bit signed integer format 2 s complement It is possible however by using of jumper JU7 to change so that the MAV part and certain parameters in the PVA part are transferred in IEEE754 floating point format During transmission reception of data consisting of several bytes for example the MAV it is up to the master the PLC to provide for consistent belonging together data Version 2005 11 10 rev 1 Page 4 Eilersen Electric women venna 3 2 PCV Description Bit 15 The PCV part of the telegram is as mentioned made up of a PCA part an IND part and a PVA part As mentioned the IND part is not used but the functionality of the other two parts of the PCV is described here PCA handling The PCA part contains a RC part for request and response indication and a PNU part for indication of parameter number This i
4. Reserved for future use 0400 Reserved for future use 0800 No loadcell modules answer Bad connection between communication module and loadcell module Not all telegrams from communication module are received in loadcell module 1000 _ Reserved for future use 2000 Reserved for future use 4000 _ Reserved for future use 8000 Wrong number of loadcells The number of detected loadcells at power up does not match the number indicated on Sw1 1 Sw1 4 Version 2005 11 10 rev 1 Page 18 Eilersen Electric women User mmal 7 ZEROING AND CALIBRATION 7 1 Zeroing procedure Zeroing of the system all loadcells should be done using the following procedure 1 2 3 The weighing arrangement should be empty and clean The Zero system bit in the Control Word is activated Note that zeroing is only done on the 0 1 transition By reading the Zeroing OK and the Zeroing not possible bits it is possible to read the result of the desired zeroing If zeroing is not possible the reason can be read in the Zeroing register It is always possible to read the achieved or used zero by reading from the parameter numbers where the loadcell zeroes are stored If in possession of a zero from a previous zeroing it is possible to insert this zero by writing to the parameter numbers where the loadcell zeroes are stored Note that no zeroing is performed at power on 7 2 Calibration procedure Fine calibration of the s
5. Actual signal for loadcell 6 Actual signal for loadcell 7 Actual signal for loadcell 8 Actual signal for loadcell 9 Actual signal for loadcell 10 Actual signal for loadcell 11 Actual signal for loadcell 12 Actual signal for loadcell 13 Actual signal for loadcell 14 Actual signal for loadcell 15 80 4 RW Actual zero for loadcell 0 81 4 RW Actual zero for loadcell 1 Version 2005 11 10 rev 1 Page 13 Eilersen Electric women User mmal Actual zero for loadcell 2 Actual zero for loadcell 3 Actual zero for loadcell 4 Actual zero for loadcell 5 Actual zero for loadcell 6 Actual zero for loadcell 7 Actual zero for loadcell 8 Actual zero for loadcell 9 Actual zero for loadcell 10 Actual zero for loadcell 11 Actual zero for loadcell 12 Actual zero for loadcell 13 Actual zero for loadcell 14 Actual zero for loadcell 15 Corner calibration factor for loadcell 0 Corner calibration factor for loadcell 1 Corner calibration factor for loadcell 2 Corner calibration factor for loadcell 3 Corner calibration factor for loadcell 4 Corner calibration factor for loadcell 5 Corner calibration factor for loadcell 6 Corner calibration factor for loadcell 7 Corner calibration factor for loadcell 8 Corner calibration factor for loadcell 9 Corner calibration factor for loadcell 10 Corner calibration factor for loadcell 11 Corner calibration factor for loadcell 12 Corner calibration factor for loadcell 13 Corner calibration facto
6. and Standard Gram mode Version 2005 11 10 rev 1 Page 17 Eilersen Electric women venna 6 STATUS CODES Status codes are shown as a 4 digit hex number If more than one error condition is present the error codes are OR ed together CODE CAUSE Hex 0001 Invalid missing sample ID Bad connection between communication module and loadcell module Not all telegrams from communication module are received in loadcell module 0002 Loadcell timeout Check that the loadcell is connected to the loadcell module 0004 Loadcell not synchronized Bad connection between loadcell and loadcell module or very powerful un der or overload 0008 Hardware synchronization error Loadcell samples are not synchronized Cable between loadcell modules shorted or disconnected 0010 Power failure Supply voltage to loadcells is to low 0020 Overflow in weight calculation Internal error in loadcell module 0040 Invalid missing latch ID Bad connection between communication module and loadcell module Not all telegrams from communication module is received in loadcell module 0080 No answer from loadcell module No data is received from this loadcell module This can be caused by the re moval of the loadcell module no power to the module or that the connection between loadcell module and communication module is broken 0100 Reserved for future use 0200
7. the sub D connector male of the ca ble The specific terminals in the connector have the following function J1 TERMINALS FUNCTION III Not used J1 2 Not used J1 3 RS485 A positive line Siemens designation B line J1 4 Request to Send RTS J1 5 0 VDC Gnd J1 6 5VDC Vout J1 7 Not used J1 8 RS485 B negative line Siemens designation A line J1 9 Not used Note that some companies use different designations for the RS485 A and the RS485 B lines Therefore the polarity of the lines has been listed 9 9 Hardware Selftest This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type During power on the Profibus DP module will perform a hardware selftest The test will cause the light emitting diodes D1 D2 and PBE to turn on and off shortly one at a time 9 10 Update times This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type All loadcells are sampled over a period of 200 mS The hereby found loadcell signals are used in the Profibus DP communication until new signals are achieved when the next sample pe riod expires Update times across the Profibus DP communication depends on the specific Profibus DP configuration selected baudrate number of slaves scan times etc Version 2005 11 10 rev 1 Page 26
8. 1110 00100000 3 4 2 Signed integer format 32 bit The following are examples of decimal numbers represented on 32 bit signed integer for mat Decimal Hexadecimal Binary MSB first 20000000 OxFECED300 11111110 11001110 11010011 00000000 2000000 OxFFE17B80 11111111 11100001 01111011 10000000 200000 OxFFFCF2CO 11111111 11111100 11110010 11000000 20000 OxFFFFB1E0 11 10110001 11100000 2000 OxFFFFF830 11111 11111000 00110000 200 OxFFFFFF38 111 11111111 00111000 2 OxFFFFFFFE 1111111 11111111 11111111 11111110 1 OxFFFFFFFF 11111111 11111111 11111111 11111111 0 0x00000000 00000000 00000000 00000000 00000000 d 0x00000001 00000000 00000000 00000000 00000001 2 0x00000002 00000000 00000000 00000000 00000010 200 0x000000C8 00000000 00000000 00000000 11001000 2000 0x000007D0 00000000 00000000 00000111 11010000 20000 0x00004E20 00000000 00000000 01001110 00100000 200000 0x00030D40 00000000 00000011 00001101 01000000 2000000 0x001E8480 00000000 00011110 10000100 10000000 20000000 0x01312D00 00000001 00110001 00101101 00000000 Version 2005 11 10 rev 1 Page 10 Eilersen Electric women User mmal 3 4 3 IEEE754 floating point format 32 bit Representation of data on IEEE754 floating point format is done as follows Bytel Byte2 Byte3 Byte4 bit7 bit6 bitO bit7 bit6 bitO bit7 bitO bar bitO Sign Exponent Mantissa M
9. Eilersen Electric Kokkedal Industripark 4 DK 2980 Kokkedal DENMARK Tel 45 49 18 01 00 Fax 45 49 18 02 00 E mail info eilersen com Applies for Cygnal no Document no Date Rev MCE2035 MCE2535 PROFIBUS DP MODULE Standard weight function for digital loadcells MCE2535 WEIGHT 051103 1 1103MU1 DOC 2005 11 10 1 Eilersen Electric women User mamat 1 CONTENTS D CONTENTS EE 2 2 INTRODUCTION E 3 LG DOE 3 2 2 Profib s DP specification E 3 3 DATA EXCHANGE ssoi E E RETER E AE EE E AERE 4 3 1 PROFIBUS DP communication using PPO sseessessesseseseseessesresrrseresresesrresressresressresresreeseesesees 4 3 2 PCV NN 5 3 3 PCD Descripti n soinnissa neenon E eE E Ea EE EE ENa E aa i a aiai 7 3 4 Data de 10 3 4 1 Unsigned integer format 16 ve 10 3 4 2 Signed integer ND AE 10 343 IEEE754 floating point format 32 bit eeeeseesseesssesessessesssesressrssresressersresreesresrrseressessrs 11 A PARAMETER LIS NEEN 12 A I Parameter EE 12 5 PARAMETER DESCRIPTION vussa ueit RE eebe Ee 15 DA Parameter des PN updated ne 15 6 STATUS RT 18 ER ZEROING AND CALIBRATION EE 19 EENEG 19 Se E 19 8 INSTALATION OF SYSTEM sisccscctssnesessativeesieinaneiastavcudesposadaaesueaesa she ued danske eege 21 8 1 Checklist during installation EE ptaasPhaccedoensaaeeneaieadebacenunies 21 9 HARDWARE DESCRIPTION seornirineiria sp oaeen n r O AEE E E aae 22 9 1 MCE2035 MCE2535 modul type designations esseeesessesses
10. antissa Mantissa Formula Value 1 2 amp xponent 127 z 14 Mantissa Example Bytel Byte2 Byte3 Byte4 01000000 1111 0000 0000 0000 0000 0000 Value 1 20910 14271427 42 7 5 Please note that if transfer of MSB first has been selected default setting the byte with the sign will come first in the weight indications and if LSB first has been selected the byte with the sign will come last in the weight indications Version 2005 11 10 rev 1 Page 11 Eilersen Electric women User mmal 4 PARAMETER LIST 4 1 Parameter list A part from main values MRV MAV and control status word CTW STW which are transferred at all times using the PCD part it is possible to access the individual parameters one at a time using the PCV part The following parameters can be read updated using the PCV part NO TYPE PARAMETER LC register Bit register for indication of connected loadcells detected during power up Corner register Indicates corner loadcell number to be corner calibrated Reserved for future use Error register Bit register for indication of detected errors Zeroing register Bit register for indication of errors during zeroing Calibration register Bit register for indication of errors during calibration Reserved for future use Exponent for MAV Exponent for loadcell 0 Exponent for loadcell 1 Exponent for loadcell 2 Exponent for loadcell 3 Exponent for loadcell 4 E
11. ffecting the weighing arrangement me chanically Check that the value in the Calibration load for cor ner system register corresponds to the actual load Gross weight was negative during calibration Check the gross weight and whether it shows zero without any load Reserved for future use Exponent for MAV is a register containing the exponent for the MAV If Gram mode has not been selected using jumper JU1 the transferred gross weight has to be compared with this exponent It indicates the resolution of the MAV gross weight as described under Expo nent for loadcell X The exponent corresponds to the smallest loadcell exponent Exponent for loadcell X is a register containing the exponent of loadcell X The transferred weighing result has to be compared with the exponent for the loadcells The exponent is a fixed value 2 complement for a given loadcell and it indicates the resolution of the load cell weighing result as follows Exponent Exponent Conversion factor SI unit Decimal Hexadecimal to gram 3 OxFFFD 10 mg 2 OxFFFE Slip cl OxFFFF SI 0 0x0000 10 gram 1 0x0001 10 2 0x0002 10 3 0x0003 10 Kg 4 0x0004 SI 5 0x0005 10 6 0x0006 10 ton Version 2005 11 10 rev 1 Page 16 Eilersen Electric women venna Status for loadcell X is a register containing the actual status for loadcell X The meaning of the status code can be
12. found in the STATUS CODES chapter Actual gross weight for loadcell X contains the actual gross weight for loadcell X The gross weight is the actual load signal for the loadcell adjusted by zero and calibration factor Note that the value is a value averaged over 200 ms Actual signal for loadcell X contains the actual signal for loadcell X The actual signal is the actual load signal for the loadcell without any adjustment fir zero and calibration factor Note that the value is a value averaged over 200 ms Actual zero for loadcell X contains the actual zero value for loadcell X The value is deter mined during zero from Actual signal for loadcell X Corner calibration factor for loadcell X contains the calibration factor for loadcell X The value is determined during calibration of corner X and lies in the interval 24576 40960 with 32768 as center value standard calibration factor corresponding to no calibration Calibration factor for system contains the system calibration factor The value is determined during calibration of the system and lies in the interval 24576 40960 with 32768 as center value standard calibration factor corresponding to no calibration Calibration load for corner system must contain the load used during calibration of the sys tem or corner Note that this parameter is always transferred in the same format as the MAV The format may vary depending on the actual jumper settings MSB LSB first SI32 IEEE754 format
13. h functions are implemented on the Profibus DP master Version 2005 11 10 rev 1 Page 21 Eilersen Electric Be MCE2035 MCE2535 User manual 9 HARDWARE DESCRIPTION 9 1 MCE2035 MCE2535 modul type designations The Profibus DP module is designated as either a MCE2035 module or a MCE2535 mod ule The two module types are the same except that MCE2035 modules as opposed to MCE2535 modules are encased in their own module box Connectors and the way in which the two module types are connected to power supply and loadcells are therefore the only differences between the two module types These differences will appear in the chap ters Connection of power and loadcells 9 2 Connection of power and loadcells This chapter describes the connection of power supply and loadcells for a MCE2035 mod ule and a MCE2535 module respectively 9 2 1 MCE2035 Standard Connection The 10 pole connector J2 on the MCE2035 module is connected to the 10 pole connec tors on the loadcell interface modules MCE9610 MCE2010 and to the 10 pole connector on the MCE9601 connection module using the supplied ribbon cable with mounted con nectors Through this bus cable connection of power supply to the individual modules is achieved and data can be transferred from the loadcell modules to the MCE2035 module The MCE9601 module has the following connections in the blue connector J1 MCE9601 CONNECTOR CONNECTION GND B DATA
14. irst selected or bytes 5 6 LSB first selected 4 byte parameters are transferred in bytes 5 8 If the slave the weight refuses a request from the master the RC part will assume the value 3 see above and the actual error code will be transferred in the PVA element The following error indications are possible ERROR CAUSE Illegal PNU i Reserved for future use 2 Upper or lower limit is exceeded Version 2005 11 10 rev 1 Page 6 Eilersen Electric women venna 3 3 PCD Description As mentioned the PCD part of the telegram is made up of a CTW STW part and a MRV MAV part The functionality of the PCD parts is described here Note that the PCD part the last 6 bytes always transfers these data independent of the contents of the PCV part the first 8 bytes CTW handling During communication from the master to the slave the weight the first two bytes in the PCD part is used as a Control Word CTW By use of the Control Word CTW it is possible to tell the slave the weight how it should react as different commands can be transferred to the weight The bit s in CTW have the following function BIT NO FUNCTION Reserved for future use Calibrate corner If the Zero system bit is activated all loadcells and thereby the calculated system weight will be zeroed This should only be done with an empty weighing arrangement If the Calibrate corner bit is activated the loadcell specified by the Corner regi
15. libration corner is selected in the Corner register prior to start of cor ner calibration The corner number corresponds to the loadcell communication ad dress which is set on the matching loadcell module If in doubt the loadcell number can be verified by finding the Actual gross weight for loadcell X which gives a corresponding signal change when a load is placed removed directly above the ac tual loadcell It is the Calibrate corner bit in the Control Word CTW that has to be activated and not the Calibrate system bit The used calibration load must be placed directly above the actual loadcell so that it is this loadcell that absorbs the entire load It is not the system gross weight that has to be observed but the Actual gross weight for loadcell X If the other loadcells are completely unloaded this value should correspond with the system gross weight Every corner calibration only changes the calibration factor for the corresponding corner The other corner and system calibration factors remain unchanged It is always possible to read the achieved or used calibration factors by reading from the pa rameter numbers where the calibration factors are stored If in possession of calibration factors from a previous calibration it is possible to insert these by writing to the parameter numbers where the calibration factors are stored Note that no calibration is performed at power on Version 2005 11 10 rev 1 Page 20 Eiler
16. ll interface modules are also lit can flash slightly Verify that the Profibus DP module has found the correct loadcells Par No 0 and that no loadcell errors are indicated in the Status Word STW Check that the loadcell exponents Par No 16 31 are identical Reset all calibration factors by using the Reset Calibration bit in the Control Word CTW Zero the system weight with empty weighing arrangement by using the Zeroing procedure described earlier Verify that every loadcell gives a signal Par No 48 63 by placing a load directly above each loadcell one after the other possibly with a known load Place a known load on the weighing arrangement and check that the system weight MAV corresponds to the load Does the master take the exponent scal ing into account if Gram mode has not been selected Zero the system weight with empty weighing arrangement by using the Zeroing procedure described earlier Place a known load as close to maximum load as possible on the weighing ar rangement If the system weight deviates to much from the actual load a fine calibration of the system is made using the Calibration procedure described earlier The system is now installed and a final check is made before the system is taken into us age Possibly make a note of all zeroes Par No 80 95 and calibration factors Par No 96 112 for later use Note that in the above checklist no consideration has been made on whic
17. r IEEE754 data format The jumper determines if certain weight indications in the telegram are in 32 bit signed integer or in IEEE754 floating point format OFF 32 bit signed integer format normal setting from factory ON I EEE754 floating point format JU8 Selection of LSB MSB data format The jumper determines the byte order in which data are transmitted received OFF LSB first ON MSB first normal setting from factory Version 2005 11 10 rev 1 Page 25 Eilersen Electric women venna 9 6 JTAG connector This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type The Profibus DP module is equipped with an internal JTAG connector The connector J5 is used exclusively by Eilersen Electric A S for download of software to the Cygnal processor 9 7 RS232 connector This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type The Profibus DP module is equipped with an RS232 connector The connector J4 is used exclusively by Eilersen Electric A S for connection to a PC for configuration monitoring of the Profibus DP module 9 8 Profibus DP connector This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type The Profibus DP module is equipped with a nine pole female sub D connector J1 for connection to the Profibus DP network The connector is a standard Profibus DP connec tor Termination of the Profibus should take place in
18. r for loadcell 14 Corner calibration factor for loadcell 15 Calibration factor for system Calibration load for corner system 114 127 Reserved for future use Note that NO indicates the parameter number for the parameter in question Note that TYPE indicates the length of the parameter in question 2 2 bytes and 4 4 bytes In addition after the length it is indicated whether its a read and write register RW ReadWrite or its a read only register R Read Note that data values are transferred as 2 complement signed values Note that a after the parameter number indicates that the parameter in question is stored in the SEEPROM of the module why this parameter can be remembered after power has been disconnected Please note that no zeroing or calibration is performed at power up Version 2005 11 10 rev 1 Page 14 Eilersen Electric women venna 5 PARAMETER DESCRIPTION 5 1 Parameter description The individual parameters have the following functions LC register is a bit register for indication of connected loadcells detected at power up Hence bit 0 15 will be ON if the corresponding loadcell was detected during power up Corner register indicates which corner loadcell number that has to be corner calibrated The loadcell number corresponds to the loadcell module address Hence values in the interval 0 15 are valid Values in the interval 16 65535 indicates that the calibration comer is not se lected E
19. ric women venna 9 4 Light Emitting Diodes This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type The Profibus DP module is equipped with 6 light emitting diodes LED These LED s have the following function LED FUNCTION TXBB Communication with loadcells Green Profibus DP module is communicating with loadcells DI Reserved for future use Green D2 Reserved for future use Green PBE Profibus Error when initializing the SPC3 Red The SPC3 Profibus DP controller was not initialized correctly DES Data Exchange State Yellow Exchange of data between Profibus DP slave and master RTS RtS signal SPC3 Yellow The Profibus DP module sends to the master 9 5 Jumpers This chapter applies to Profibus DP modules of both the MCE2035 and MCE2535 type The Profibus DP module is equipped with 7 jumpers These jumpers have these functions JUMPER FUNCTION JU1 Selection of Standard mode Gram mode The jumper determines if certain weight indications in the telegram are in standard format must be scaled according to the exponent or directly in grams OFF Standard mode normal setting from factory ON Gram mode JU2 JU4 Reserved for future use termination normal default factory setting is OFF JU6 Reserved for future use normal default factory setting is OFF JU7 Selection of 32 Bit Signed Intege
20. ror register MRV handling During communication from the master to the slave the weight the four last bytes in the PCD part are used as a Main Reference Value MRV a setpoint The Main Reference Value MRV has no function in this program MAV handling During communication from the slave the weight to the master the four last bytes in the PCD part are used as a Main Actual Value MAV the actual value The Main Actual Value MAV is used to transfer the actual gross weight of the system The gross weight must be scaled in accordance to the Exponent for MAV parameter Par No 15 if Gram mode has not been selected using jumper JU1 Default factory setting is that Gram mode is not se lected Note that the MAV part may be transferred in 32 bit signed integer format default or in IEEE754 floating point format depending on the actual jumper setting Version 2005 11 10 rev 1 Page 9 Eilersen Electric women venna 3 4 Data formats The Profibus DP communication can transfer data in the following three data formats If necessary please refer to other literature for further information on these formats 3 4 1 Unsigned integer format 16 bit The following are examples of decimal numbers represented on 16 bit unsigned integer format Decimal Hexadecimal Binary MSB first 0 0x0000 00000000 00000000 J 0x0001 00000000 00000001 2 0x0002 00000000 00000010 200 0x00C8 00000000 11001000 2000 0x07D0 00000111 11010000 20000 0x4E20 0100
21. rror register is a bit register for indication of detected errors The individual bits have the following function BIT NO FUNCTION A checksum error for storage of zero and calibration in the SEEPROM of the module was detected during power up A calibration factor was out of range during power up or scale is not cali brated A zero was invalid during power up or scale has not been zeroed Inconsistency between number of detected loadcells during power on and the number of loadcells indicated using Sw1 1 Sw1 4 Reserved for future use Zero register is a bit register for indication of errors during zero The individual bits have the following function BIT NO FUNCTION ae error during zero Eeer status for the individual loadcells 15 Reserved Reserved for futureuse future use Version 2005 11 10 rev 1 Page 15 Eilersen Electric women ve mmal Calibration register is a bit register for indication of errors during calibration The individual bits have the following function BIT NO FUNCTION 0 LC error during calibration Check status for the individual loadcells 1 Calibration load not selected valid Check that a valid calibration load has been selected 2 Calibration corner not selected valid Check that a valid calibration corner has been selected 3 Calibration range exceeded It was not possible to calibrate the system within the valid calibration range Check that nothing is a
22. s DP module through a loadcell interface module It is possible to connect the MCE2535 Profibus DP module to a Profibus DP network where it will act as a slave It will then be possible from the Profibus DP master to read status read system weight and perform commands such as zeroing and calibration Exchange of data between master and slave takes place as described in the following 2 2 Profibus DP specification The MCE2535 Profibus DP module confirms to the following Profibus DP specifications Protocol Profibus DP Communications form RS485 Module type Slave Baud rates kbit sec 9 6 19 2 93 75 187 5 500 1500 3000 6000 12000 Profibus address 0 127 Sw2 2 Sw2 8 Profibus connection 9 pin sub D female connector Version 2005 11 10 rev 1 Page 3 Eilersen Electric women User mmal 3 DATA EXCHANGE 3 1 PROFIBUS DP communication using PPO PROFIBUS DP communication with the MCE2535 communication module uses a so called parameter process data object PPO consisting of 14 bytes This object is used during recep tion as well as during transmission of data The structure of this telegram is as follows PCV PCD PCA IND PVA CTW MRV STW MAV ee KE Byte 1 Byte 14 The telegram is made up of two blocks a PCV part the first 8 bytes and a PCD part the last 6 bytes The two blocks are made up as follows PCV Parameter Characteristic Value PCA Bytes 1 2 Parameter Characteristics IND Bytes 3 4
23. s shown in the figure of the PCA block below Bit 0 RC TBD PNU Request Response Characteristics Values 0 15 Not used Reserved for future use Parameter number Values 0 999 RC Request Response Characteristics The RC part is used by the master to tell the slave the weight what requests are wanted Similarly the RC part is used by the slave to tell response the master the status results of the received requests The RC part further informs which other parts of the PCV IND and PVA are used The contents of the RC part has the following function during request REQUEST FUNCTION Request parameter value Change parameter value 2 bytes Change parameter value 4 bytes Reserved for future use Version 2005 11 10 rev 1 Page 5 Eilersen Electric women User mmal The contents of the RC part has the following function during response RESPONSE FUNCTION Transfer parameter value 2 bytes Transfer parameter value 4 bytes Request refused incl Error see later Can not be serviced by PCV interface Reserved for future use PNU Parameter number Bit 10 to Bit 0 in the PCA part indicates the parameter number of the parameter to be read changed The individual parameters and their function is explained later PVA handling The PVA part contains 4 bytes for reception and transmission of parameter values The PVA part will transfer 2 byte parameters in either bytes 7 8 MSB f
24. sen Electric women venna 8 INSTALATION OF SYSTEM 8 1 Checklist during installation During installation of the system the following should be checked 1 2 3 4 5 6 7 8 10 11 12 13 14 15 The Profibus DP master should be configured to communicate with the Profibus DP module MCE2035 MCE2535 using the supplied GSD file When configuring with the GSD file always select a MCE2535 station type This also applies for a MCE2035 module All hardware connections mentioned below are made as described depending on whether it is a MCE2035 module or a MCE2535 module The loadcells are mounted mechanically and connected to the Profibus DP module using their corresponding loadcell interface module The loadcell addresses are set using the DIP switches on the loadcell interface modules so that they forth run ning from address 0 0 15 The number of connected loadcells is set on the Profibus DP module using Sw1 1 Sw1 4 as described below The Profibus DP module is connected to the Profibus DP network and possibly a termination is made at this Profibus DP slave The address of the Profibus DP module is set using Sw2 2 Sw2 8 Power is ap plied and the Profibus DP communication is started Verify that the red LED PBE on the Profibus DP module is NOT lit and that the yellow LEDs DES and RTS are lit flashing Verify that the TXBB LED on the Profibus DP module is lit and that the TXBB LED s on the loadce
25. sessreesesresstssrerressrteresrensessrerreeseeee 22 9 2 Connection of power and Be 22 92 1 MCE2035 Standard Connection ee EE 22 9 2 2 MCE2535 Standard Omne ct OMs cssz2iececgaccedactencanicsddetaesdsesaostendnssepivetesaebecdanneanoietaweees 23 9 3 PIP ST Tegel Skee 24 94 Light See 25 IS JUMPE S eege 25 EE GE 9 EE EE 26 NPE COMME CUM EEE 26 Serres eege 26 9 9 Eeer 26 9 10 Update NN 26 Version 2005 11 10 rev 1 Page 2 Eilersen Electric women User mmal 2 INTRODUCTION 2 1 Introduction This document describes the use of a MCE2535 Profibus DP module as well as a MCE2035 Profibus DP module from Eilersen Electric when they are equipped with the program listed on the front page The two module types are the same except that MCE2035 modules as opposed to MCE2535 modules are encased in their own module box Connectors and the way in which the two module types are connected to power supply and loadcells are therefore the only differences between the two module types These differences will appear in the chap ters Connection of power and loadcells while all other chapters will cover both MCE2535 as well as MCE2035 module types In the following the designation MCE2535 will due to the same reason cover both the MCE2535 and the MCE2035 module unless it is specified otherwise With the program specified on the front page the MCE2535 Profibus DP module can act as weight for up to 16 loadcells Each loadcell is connected to the Profibu
26. st zero request has been performed Note that the bit is cleared during the zero process and after the Zero system bit is cleared again If the Zero not possible bit is ON the last zero request has not been performed The reason for this can be read in the Zeroing register Note that the bit is cleared during the zero proc ess and after the Zero system bit is cleared again If the Calibration OK bit is ON the last calibration request has been performed Note that the bit is cleared during the calibration process and after both the Calibrate corner and Cali brate system bits are cleared again If the Calibration not possible bit is ON the last calibration request has not been performed The reason for this can be read in the Calibration register Note that the bit is cleared during the calibration process and after both the Calibrate corner and Calibrate system bits are cleared again If the Reset calibration OK bit is ON the last reset calibration request has been performed Note that the bit is cleared during the process and after the Reset calibration bit is cleared again If the Clear error OK bit is ON the last clear error request has been performed Note that the bit is cleared during the process and after the Clear error in Error register bit is cleared again Version 2005 11 10 rev 1 Page 8 Eilersen Electric women venna If the Error detected bit is ON the system has detected an error The actual error can be found in the Er
27. ster will be calibrated to the weight indicated by the Calibration load for corner system register If the Calibrate system bit is activated the system weight will be calibrated to the weight indicated by the Calibration load for corner system register Note that the individual cali bration of the loadcells remains unchanged If the Reset calibration bit is activated all calibration factors system and all loadcell factors will be set to their standard value of 32768 If the Clear error in Error register bit is activated any error in the Error register will be cleared Version 2005 11 10 rev 1 Page 7 Eilersen Electric women venna STW handling During communication from slave the weight to the master the first two bytes in the PCD part are used as a Status Word STW By reading the Status Word STW it is possible for the master to achieve information on the status of the slave the weight The functionality of the individual bits in the Status Word STW is described below BIT NO FUNCTION 0 LC error Reserved for future use Zeroing OK Zeroing not possible Calibration OK Calibration not possible Reset Calibration OK Clear Error OK Reserved for future use Error detected If the LC error bit is ON one or more loadcells detected at power up are in an error state The actual error can be read in the Status for loadcell X register for the individual loadcell If the Zeroing OK bit is ON the la
28. xponent for loadcell 5 Exponent for loadcell 6 Exponent for loadcell 7 Exponent for loadcell 8 Exponent for loadcell 9 Exponent for loadcell 10 Exponent for loadcell 11 Exponent for loadcell 12 Exponent for loadcell 13 Exponent for loadcell 14 Exponent for loadcell 15 Version 2005 11 10 rev 1 Page 12 Eilersen Electric women User mmal Status for loadcell 0 Status for loadcell 1 Status for loadcell 2 Status for loadcell 3 Status for loadcell 4 Status for loadcell 5 Status for loadcell 6 Status for loadcell 7 Status for loadcell 8 Status for loadcell 9 Status for loadcell 10 Status for loadcell 11 Status for loadcell 12 Status for loadcell 13 Status for loadcell 14 Status for loadcell 15 Actual gross weight for loadcell 0 Actual gross weight for loadcell 1 Actual gross weight for loadcell 2 Actual gross weight for loadcell 3 Actual gross weight for loadcell 4 Actual gross weight for loadcell 5 Actual gross weight for loadcell 6 Actual gross weight for loadcell 7 Actual gross weight for loadcell 8 Actual gross weight for loadcell 9 Actual gross weight for loadcell 10 Actual gross weight for loadcell 11 Actual gross weight for loadcell 12 Actual gross weight for loadcell 13 Actual gross weight for loadcell 14 Actual gross weight for loadcell 15 Actual signal for loadcell 0 Actual signal for loadcell 1 Actual signal for loadcell 2 Actual signal for loadcell 3 Actual signal for loadcell 4 Actual signal for loadcell 5
29. ystem should be performed using the following procedure 1 2 3 4 5 6 Check that the weighing arrangement is empty and that the gross weight is zero Zero if necessary Place a known load on the weighing arrangement Transfer the value for the known load to the Calibration load for corner system register The Calibrate system bit in the Control Word is activated Note that calibration is only done on the 0 1 transition By reading the Calibration OK and the Calibration not possible bits it is possible to read the result of the desired calibration If calibration is not possible the reason can be read in the Calibration register If Calibration OK is indicated the transferred gross weight should now match the used calibration load and the calibration factor has been updated If Calibration not possible is indicated the system calibration factor is not changed If a corner calibration of the weighing arrangement is desired the above listed procedure can still be used as the following is taken into account Version 2005 11 10 rev 1 Page 19 Eilersen Electric women User mmal 1 2 3 4 5 6 7 Corner calibration should be performed prior to system calibration During corner calibration the Calibration factor for system should be set to its standard value of 32768 Corner calibration is done one corner at a time where the above listed procedure is used for each corner The actual ca
Download Pdf Manuals
Related Search