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1. al Po Pa fo 2 Pal lar alts a gt a a Fa Ca Cal e 7 a m In m Im gt n RA A kr a fe fs A SHIFT JE EI Alpha Upper Case Es N Lott Q 51y SP 204 ENTER 0D Lower Case SP 20 ENTER 0D if selected in Setup menu Numeric F1 1B 4E 50 F2 1B 4E 51 F3 1B 4E 52 F4 1B 4E53p F5 1B 5B 31 37 7Ey F6 1B 5B 31 38 7E 7 374 8 38 9 39 2By 2Dy F7 1B 5B 31 39 7Ey 4 34 5 354 6 365 2Fy F8 1B 5B 32 30 7Ey or lt BS gt 08h 1 315 2 324 3 335 1B 5B 41y 3Dy SHIFT 0 305 2Eg or 2Cp lt 1B 5B 44 V 1B 5B 42y gt 1B 5B 43p ENTER 0D y F keys in numeric mode and Enter in all modes can be programmed to send user defined strings 161198 Receiving Data The Mercury 2e can operate in text or graphics display mode or a combination of text and graphics screens Receiving data in text or Character Display Mode is described below Graphics mode is described on page 33 Character Display The Mercury 2e receives and transmits commands in 7 or 8 Mode bit ASCII characters See page 1
2. IS Earth Not Required Isolation 3 mutually galvanically isolated ports Communications RS232 RS422 and RS485 see Appendix F Intrinsic Safety Mounted in safe area SCS No Ex90C2017 Environmental Conditions Operating Temperature 0 to 40 C Storage 20 to 60 C Humidity 95 non condensing Protection IP 20 Location Safe Area 161198 41 42 161198 Appendix A Certificates of Conformity for the Spectra Tek UK Limited Mercury 2e and R007 Intrinsically Safe Interface Module are given overleaf 161198 43 Wa NATIONAL ACCREDITATION OF CERTIFICATION BODIES CERTIFICATE OF CONFORMITY SCS No Ex 90C2016X Re Issue This Certificate is issued for the electrical apparatus Mercury 2 Manufactured by Spectra Tek UK Ltd Swinton Grange Malton North Yorkshire YO17 0QR and submitted for certification by The Manufacturer This electrical apparatus and any acceptable variation thereto is specified in the schedule to this Certificate and the documents therein referred to Sira Certification Service being an Approved Certification Body in accordance with Article 14 of the Council Directive of the European Communities of 18 December 1975 76 117 EEC certifies that the apparatus has been found to comply with the Harmonised European Standards BS 5501 Part 1 1977 EN 50 014 BS 5501 Part 7 1977 EN 50 020 and has successfully met the examination and test requirements which are recorded in
3. Mercury 2e Terminal User Manual 2 Spectra Tek 4 Mercury Ze All trademarks are acknowledged as the property of their respective owners This document shall not form part of any contract Specifications are subject to change without notice and Daniel Europe accepts no liability of any kind for errors or omissions Layout Design by Ambrit Ltd Northchurch Herts Tel 01442 866294 Email sales ambrit co uk Page Introduction 5 Nomenclature amp Conventions 6 INSTALLATION 7 Sitting the Mercury Terminal 8 Mounting procedure 10 CONNECTIONS Intrinsically Safe Connections 11 Connecting a Terminal in a Safe Area 14 Connecting the Card Reader 14 Connecting the Barcode System 14 Cleaning the Mercury Terminal 15 POWERING UP 17 Setup 18 OPERATION 21 Receiving Data 23 Character Display mode 23 User Definable Characters and Keys 28 Messages amp Blocks 29 Point to Point Transmission 30 Multi Drop Telemetry 31 Graphics Display Mode 33 Line and Box Drawing 35 Optional Equipment 36 TECHNICAL SPECIFICATION Mercury 2e Terminal 37 Non IS Mercury 2e Terminal 39 Security card reader 39 Bar code Interface 39 Bar code wand 40 IS Interface Module 41 Appendix A Certificates of Conformity 43 Declaration of Conformity 58 Appendix B References 61 Appendix C Using Mercury 2e in Multi drop mode 63 Appendix D Terminal Wiring Schedule 67 Appendix E IS Interface Module Wiring Schedule 69 Appendix F Communications with interface
4. Keypad Line Draw Liquid Crystal Display Local Echo Modbus Message Example Multi drop mode screen Non volatile memory Parity Pixel Pattem Point to Point transmission Power external RS232 RS422 RS485 Safety procedures Screen control codes Screen mode selection Security code Setup options Shift key disable enable Static RAM Storing messages Telemetry address Tile in graphics display User definable keys Virtual cursor 92
5. Sep 90 12 Oct 90 28 Feb 91 21 Nov 90 19 Feb 91 16 Apr 91 Page 4 of 5 DESCRIPTION Circuit Diagram Circuit Diagram Parts List Parts List Ident for P053021 R3 Track layout component side Track layout solder side Ident for P053031 R3 Track layout component side Track layout solder side General assembly General assembly Assembly for soldering wires to T3 Assembly for solder wires to T 1 Transformer PCB P053021 Winding details for transformers PCB P053031 Terminal block Terminal block Choke General arrangement 18 Way Samtec Assembly Assembly instruction Certification label SIRA CERTIFICATION SERVICE 161198 NATIONAL ACCREDITATION OF CERTIFICATION BODIES CERTIFICATE OF CONFORMITY NUMBER Ex 90C2017 Re Issue DATED 19th August 1994 CONDITIONS OF CERTIFICATION 1 This Certificate has been reissued so as to include the references EN50 014 and EN50 020 which were omitted from SCS Certificate of Conformity Ex 90C2017 dated 19th April 1991 It applies retrospectively to Products covered by that Certificate The Certificate has been reissued on 19th August 1994 to correct a typographical error 2 The use of the Sira Certification Service Mark is subject to the regulations applicable to the holders of SCS Certificates Like regulations also apply to the marking of the name of the Certifying Body and this Certificate Number 3 The non hazardous area terminals should not be fed from anything tha
6. a confidential Test Report The apparatus marking shall include the code EEx ia IIC T4 Tamb max 50 C Page 1 of 5 SIRA CERTIFICATION SERVICE 161198 Registration Number on Certificate SCS No Ex 90C2016X Re Issue 9 The supplier of the electrical apparatus referred to in this Certificate has the responsibility to ensure that the apparatus conforms to the specification laid down in the schedule to this Certificate and has satisfied the routine verifications and tests referred to therein 10 This apparatus may be marked with the Distinctive Community Mark specified in Annex II to the Council Directive of 16 January 1984 84 47 EEC Date 19th August 1994 File No P 0059 00 ID Knott BSc CEng MIMechE MInstMC CHIEF EXECUTIVE Sira Certification Service Saighton Lane Saighton Chester CH3 6EG Great Britain The use ofthis apparatus will normally be the subject of National Legislation and or Installation Codes This certificate and its schedules should always be reproduced in its totality Page 2 of 5 SIRA CERTIFICATION SERVICE 161198 45 46 NATIONAL ACCREDITATION OF CERTIFICATION BODIES Registration Number on CERTIFICATE OF CONFORMITY NUMBER Ex 90C2016X Re Issue DATED 19th August 1994 APPARATUS The Mercury 2 Unit is a fixed piece of equipment and comprises a cast aluminium enclosure with a Liquid Crystal Display and membrane keyboard The unit contains a card reader and
7. an optional printed circuit board The unit is intended to be connected to simple apparatus such as switches via terminal block J1 Page 3 of 5 SIRA CERTIFICATION SERVICE 161198 CERTIFICATE OF CONFORMITY NUMBER Ex 90C2016X Re Issue DATED 19th August 1994 DRAWING NUMBER SHEET REV P05020DR2 POS3009F POS3009F POS3041D P053041D POS3041D POS3007C POS3007C R005010C R008005D R008010D R004069D R005018D R004067D R004074B R004074B POS3015D R0040166 R005016C 5 w N een N iN 2 N2 N2 L Um D Q O L C GO GO Q Q O 161198 DATE 25 Jan 91 12 Apr 91 12 Apr 91 21 Nov 90 21 Nov 90 21 Nov 90 05 Mar 91 05 Mar 9 26 Jul 89 28 Feb 91 07 Aug 90 12 Apr 91 07 Mar 89 04 Apr 91 16 Apr 91 16 Apr 91 24 Oct 90 04 Feb 91 12 Apr 91 Page 4 of 5 Registration Number 011 DESCRIPTION Circuit diagram Parts List Parts List Component ident Track layout component side Track layout solder side PCB modification General assembly Card reader assembly Bar code reader Bar code socket assembly Keyboard assembly Card reader coil Display modification General assembly General assembly Transformer TI on PCB P053 2 Approval label Card reader proximity switch wiring schematic 5 SIRA CERTIFICATION SERVICE 47 Registration Number on CERTIFICATE OF CONFORMITY NUMBER Ex 90C2016X Re Issue DATED 19th August 1994 COND
8. as the left side of the screen and Column 40 on the right the number is interpreted at modulo 40 Thus if Pc equals 84 then the cursor moves to column 4 161198 25 26 Table 6 Command Escape Sequences Action Set Security Code where Pa Pb Pc are two digit ASCII coded numerals to create 6 digit security code see page 20 Select 7 bit ASCII mode Select 8 bit ASCII mode Sample Digital Inputs Set Up Message For Later Recall where Pn is a two digit ASCII numeral defining message identifier value 1 to 99 Recall Message Send Next Queued Block Re Send Last Sent Block Delete all stored Messages Store lo NVRAM Set Keypad To Numeric Mode Set Keypad To Upper Case Mode Set Keypad to Lower Case Mode Enable bar code in one shot mode Disable bar code Enable bar code Character String lt ESC gt 1 Pa Pb Pc z lt ESC gt 1 lt ESC gt 1 h lt ESC gt 4 z lt ESC gt 7 Pn z DATA lt EM gt lt ESC gt 8 Pn z lt ESC gt 9 1z lt ESC gt 9 2z lt ESC gt 10 z lt ESC gt 11 z lt ESC gt Z lt ESC gt Z lt ESC gt Z lt ESC gt 15 17 lt ESC gt 15 2 z lt ESC gt 15 3z Enable card reader in one shot mode lt ESC gt 15 4 z Disable card reader Enable card reader To configure bar code reader Redefine lt STX gt character where p is a single cha
9. block 31 32 Block Format Sending Block The block format for messages in multi drop are similar to that for Point to Point mode and are received as well as transmitted lt SIX gt ADDR FUNC ID DATA DMY CSUM lt EIX gt These fields are described on page 30 The following fields have additional options in multi drop mode as follows ADDR Mercury 2e Terminal can be set to respond to any address in range 1 to 15 in the Setup menu Address 00 is reserved for broadcast to all slave terminals ID In addition to the codes B C and E described in Point to Point Mode a single byte defines the block source as follows A 41 4 block from operator keyboard entry D 44 block from keyboard function key Fl to F8 DATA Format differs slightly for sending or receiving data blocks Block data received by the Mercury 2e can be up to 128 bytes long containing visible characters and escape sequences Block data transmitted by the Mercury 2e includes one of the above ID bytes or the Multi drop Acknowledge block see Setup menu on page 19 No acknowledgement is sent if the received block was a broadcast A key or series of keys pressed on the terminal are stored into an output buffer on the keypress Enter The master unit reads the output buffer on a FIRSI IN FIRST OUT basis The escape sequence to send the next buffer is defined in Table 6 on page 26 Examples of typical sequences and how they are compos
10. considered together 161198 Sequences transmitted by Mercury 2e cannot be interrupted and other blocks or keyboard inputs will be buffered until the first sequence is transmitted in its entirety Mercury is configured to respond to defined escape sequences transmitted by the host computer and these are listed below with their actions Table 5 lists escape sequences that control the cursor and screen Table 6 gives escape sequences that create commands Table5 Action Character Sting Curso 1 Screen Clear Display lt ESC gt 2 J on enabled screens Control Strings in Clear To End Of Line SC gt K Set Graphic Display Mode lt ESC gt 2 z Text Mode Set Character Display Mode lt ESC gt 3 z Make Cursor Visible lt ESC gt 25 h Text mode only Make Cursor Invisible lt ESC gt 25 1 Text mode only Move Cursor lt ESC gt Pr Pc H New Line lt ESC gt E Cursor Down lt ESC gt D Cursor Up lt ESC gt M Save Cursor Position lt ESC gt 7 Text mode only Restore Cursor Position lt ESC gt 8 Text mode only Home Cursor 1 1 Top Left lt ESC gt 6 1 Pr and Pc define the location to which the cursor moves being respectively row and column numerals in ASCII code With Row 1 as the top of the screen and row 8 at the bottom the number is interpreted as modulo 8 thus if Pr equals 16 then the cursor moves to row 8 Similarly with Column 1
11. module 71 Appendix G Wiring Drawings 75 Appendix H Modbus option operation 80 Parts Ordering Codes 90 More Information 91 Index 92 161198 3 Mercury 2e Terminal with Security card Reader and Bar code wand 161198 161198 Introduction The Spectra Tek Mercury 2e is a robust operator interface for use within a remote computer or microcomputer system The terminal is ideal for use in Petrochemical Pharmaceutical Paint and other industries where low cost high performance Intrinsically Safe operation is mandatory The Mercury 2e is simple to install and incorporates a set up facility for system configuration Weather proof to IP65 standard the Mercury 2e is approved for intrinsically safe operation for group IIC gases within a zone 0 hazardous area Power and communication are connected via an intrinsically safe interface module mounted in a safe area The interface module provides RS232 422 485 communications for point to point or multi drop systems The Mercury 2e comprises a high contrast liquid crystal display a tactile alphanumeric keypad dedicated socket for an optional reader and external contact status inputs Communications use standard 7 or 8 bit ASCII characters and transmit inputs from the keypad or data from a bar code wand bar code laser scanner or security card reader The Mercury 2e terminal and IS interface module may also be used in any non hazardous industrial location where the adva
12. of the top left corner and wdth and hgt give the width in bytes and height in rows of the image 161198 35 36 Optional Equipment Card Reader Operated by passing a customer card through the reader a successful read is indicated by a beep In point to point mode transmission to the host computer is immediate In multi drop mode the data is stored in the output buffer The message format is determined by the byte structure setting selected during set up and comprises an escape prefix function code data and retum For sequences controlling the card reader see page 26 Bar Code Wand Reader The bar code reader is operated by wiping the head of the wand over the item bar code The tip should be in contact with the bar code surface and the wand may be wiped in either direction A successful read of the bar code is indicated by a beep For escape sequences controlling the bar code reader see page 26 Laser Scanner Installation and operation of the Bar code laser scanner is covered in a separate manual Operation results in the same action as described for the Bar Code Wand 161198 161198 Mercury 2e Terminal Part No R004 e IS Physical Data Overall Dimensions Height Width Depth Weight Colour Paint type Performance Data DISPLAY Type Colour Character Mode Graphics Mode Keypad Keyboard modes Digital Inputs Protocol Communication Communications speed 370 mm 227 mm w
13. on RS232 levels External 12V power connections on the Mercury terminal are located at terminal block J4 pins 1 and 2 The current is typically 45mA Note that no connections should be made to the J5 terminal block Communication to the Mercury Terminal is made via an RS232C interface on terminal block J3 pins 1 to 4 The RS232 interface connections to the Mercury Terminal are listed in Appendix E Unscrew the caphead socket screws retaining the cover below the Terminal keypad Plug in the 5 pin plug to J2 Fit and screw the card reader into place ensuring that the O ring is correctly seated The Bar code wand plugs into the small socket on the underside of the Mercury 2e Terminal The bar code laser scanner requires wiring in For connection details see the separate Laser Scanner manual 161198 Cleaning the Mercury Terminal 161198 The body of the terminal is finished in epoxy paint The display window is polycarbonate and the keypad surface is polyester These may be cleaned with soapy water Difficult grease deposits may be treated with most solvents In a hazardous area avoid rubbing dry plastic surfaces with cleaning cloths as there is a small spark hazard by triboelectric charge generation This risk can be overcome by using moist cleaning processes The keypad carries a reminder of this risk 15 16 161198 161198 Powering Up With no local switch the Mercury terminal receives power whe
14. order Features and operation are detailed below 1 The Mercury 2e Modbus Terminal MMT The mercury 2e Modbus interface will work in the following manner 1 1 The Mercury 2e terminal will be the Modbus slave device 1 2 The Mercury 2e terminal will respond in Modbus RTU mode only 1 3 The MMT will respond only to a fairly basic set of commands such as those that a PLC operating as a Modbus master may produce 1 4 Complex commands such as graphics etc will be pre loaded into the Mercury 2e Terminal ehilst in ANSI VT100 mode and stored as messages in the Non Volatile memory and simply recalled when in Modbus mode 1 5 After a time interval equal to 3_ characters RTU Modbus would normally timeout and clear any input buffers However due to processor limitations this timeout interval will be fixed at 0 8 seconds which is just longer than the normal 3 character timeout interval at 50 baud 2 Screen Control Registers 2 1 Display Mode Register 1 A single Modbus register will be allocated to set the character and graphics screen modes and interactions O Neither screen visible 1 Text on Graphics off Same coding as in ANSI Mode 2 Graphics on Text off 3 Text and Graphics on screens logically O Red 4 Text and Graphics on screens logically ANDed 5 Text and Graphics on screens logically XO Red 80 82 2 2 Set Keyboard Mode Register 2 1 Uppercase 2 Lowercase 3 Numerical 2 3 Set Bar
15. 0000 0 0 00 0 2 000 0 B 00 0 R 0000 0 00 3 000 C 00 S 000 00 0 0 00 4 00 00 D 0 00 T 000 0 0 0 0 5 00 0 E 0 0 U 000 0 amp 0 0 0 6 00 0 F 00 V 000 00 7 000 G O W 00 000 0 000 8 0 000 H 000 X 00 00 0 00 9 0 00 I 00 Y 00 0 0 000 0 0 0 J 0 0 Z 00 0 0 0 0 0 K O 00 00 0 00 lt 0 00 L 2 00 00 0 OveeQe O O M 0 00 0 0O 0 gt OO N en Oo 00 Oses Or Oe ten 33 Cursor and Screen 34 Control Codes Table 8 Cursor Screen Control in Graphics ode Control Codes In Graphics Mode Cursor Screen Control codes differ slightly from those in Character Display Mode Table 8 lists the escape sequences and actions that result in when Graphics Mode Action Character Sting Clear Display lt ESC gt 2 J Set Graphic Display Mode lt ESC gt 2 z Set Character Display Mode lt ESC gt 3 z Move Virtual Cursor lt ESC gt Pr PcH Virtual Cursor Down and to Start of Line lt ESC gt E Virtual Cursor Up lt ESC gt D Virtual Cursor Down lt ESC gt M Select standard character size lt ESC gt 3 z Select larger character size lt ESC gt 3 Z Graphics mode only Pr and Pc define the tile to which the cursor should move being respectively row and column numerals in ASCII code Tile row 1 is the top of the screen and tile row 64 is the bottom so Pr refers to the row l
16. 161198 161198 e CERTIFICATE OF CONFORMITY VARIATION CERTIFICATE NUMBER Ex 90C2016X VARIATION NUMBER 1 ONE VARIATION To permit a change to the design of the Mercury 2 DRAWINGS Document Sheet No Issue Date Number P053 007 C 1 6 13 Jun 94 P053 009 F 1 8 28 Jun 94 P053 009 F 2 8 28 Jun 94 P053 020 D 1 2 26 Apr 94 P053 020 D 3 2 26 Apr 94 Page 1 of 4 lt KHN ACRRON MIEY DATE 10th May 1993 Re issue DATE 14th July 1994 Description GENERAL ASSEMBLY DRAWING MERCURY 2 TERMINAL SIRA PARTS LIST MERCURY 2 TERMINAL SIRA PARTS LISTS MERCURY II SCHEMATICS MERCURY 2 SCHEMATICS POWER SUPPLY AND COMMUNICATIONS LO IA 49 NN 03 4 b KALIONAL ACAIONANON L S i I 0 l CERTIFICATE OF CONFORMITY VARIATION CERTIFICATE NUMBER Ex 90C2016X DATE 10th May 1993 Re issue VARIATION NUMBER 1 ONE DATE 14th July 1994 Document Sheet No Issue Date Description Number P053 020 D 2 2 26 Apr 94 MERCURY 2 SCHEMATICS CARD READER WAND DIG VO ETC P053 041 D 1 2 13 Jun 94 MERCURY 2 COMPONENT IDENT P053 041 D 2 2 13 Jun 94 MERCURY 2 COMPONENT COPPER P053 041 D 3 2 13 Jun 94 MERCURY 2 SOLDER COPPER R004 067 D 1 4 27 Apr 94 DISPLAY MODIFICATION DETAILS R004 074 B 1 6 14 Sep 93 MERCURY 2 TERMINAL G A R004 074 B 2 6 14 Sep 93 MERCURY 2 TERMINAL G A R005 016 C 1 3 29 Apr 92 CARD RE
17. 4 Weigand Security card input registers 5 5 5 6 na nH Registers 19 and 20 A pair of Modbus registers are used to hold the Weigand card reading Up to 5 Weigand card readings may be buffered waiting to be read If further Weigand card readings are made without the buffer being read the subsequent data is lost The Modbus input registers are used together to hold the 32 bit value read from the Weigand card The lower Modbus register of the pair contains the bits lt 31 16 gt and the higher order register holds the bits lt 15 0 gt Composed Text Modbus input registers Registers 21 to 35 A set of 15 Modbus registers are used to hold the Composed Text readings Up to 5 Composed Text readings may be buffered waiting to be read If further text is entered without the buffer being read the subsequent data is lost For each Modbus register the high order D8 D15 holds the left hand character ASCII value and the low order D0 D7 holds the left hand character ASCII value If the Composed Text is less than 30 characters long then the Modbus register half following the last valid character will have the value 00 Hex as will all the other Modbus registers in the rest of the register set Modbus Inputs single bit reads Coils 1 to 5 5 off single bit Modbus inputs that reflect the digital input status of the Mercury 2e 161198 Mercury 2e Example Modbus 161198 Messages The following examples are
18. 9 The enhanced character set is only available when both communication and operation of Mercury 2e are set to 8 bit mode Note that in 7 bit transmission only codes 00 to 7Fy are used In 8 bit mode Mercury can receive 256 unique data codes The first 32 codes control the operation of the terminal and so are not displayed The next 128 codes are displayable on the LCD except for lt DEL gt 7F The codes used in 8 bit transmission 00 to 9F with their respective Hexadecimal values and standard ASCII names are given in Table 3 Table 3 Standard ASCII Names of Control Codes Lower Upper nibble nibble x Hex Oa Ux 2004 IR RE 504 6 7 g ER 9x 4 A FCO 0 lt NUL gt DIE lt P gt 0 o P p 1 lt SOH gt DCI gt 1 A Q a q u ce 2 lt STX gt lt DC2 gt 2 B R b r 3 TX gt lt DC3 gt 3 C S c S 4 lt EOT gt lt DC4 gt 4 D T d t 0 5 lt ENQ gt lt NAK gt 5 E U e u 6 lt ACK gt lt SYN gt 6 F V f V a 7 lt BEL gt lt ETB gt 7 G W g w G 8 lt BS gt lt CAN gt 8 H X h X amp y 9 lt HT gt lt EM gt 9 I Y i y 0 A lt LF gt lt SUB gt J Z j Z B lt VI gt lt ESC gt K k i C lt FF gt lt FS gt j lt L 1 i D lt CR gt lt GS lt M m 1 Y E lt SO gt lt RS gt gt N n A Pt F lt I gt lt US gt O 0 lt DEL gt A t 161198 In 8 bit mode Hexadecimal A04 to FF are available for users to download as
19. ADER PROXIMITY SWITCH WIRING SCHEMATIC Page 2 of 4 SIRA CERTIFICAHON SERVICI 161198 RATIONAL ACCREDITATION DE CERTIFICATION BODIES Rerpstraton Number on CERTIFICATE OF CONFORMITY VARIATION CERTIFICATE NUMBER Ex 90C2016X DATE 10th May 1993 Re issue VARIATION NUMBER 1 ONE DATE 14th July 1994 Document Sheet No Issue Date Description Number R008 010 D 1 3 29Apr92 BAR CODE READER SKT CABLE ASSY DETAILS 161198 BODIES Reyisiatior Number on CERTIFICATE OF CONFORMITY VARIATION CERTIFICATE NUMBER Ex 90C2016X DATE 10th May 1993 Re issue VARIATION NUMBER 1 ONE i DATE 14th July 1994 ADDITIONAL CONDITIONS 1 For the purposes of a system assessment connector strip PL4 on the Mercury 2 has the following parameters UD 5 88V Group Co L Ro L 254mA IIC 12 5uF 33pH Q P 1 07W IIB 98 5uF 99pH Q Gi 30 5pF TIA 313pF 264uH Q L 0 2 Connectors PL3 and PL4 must not be used at the same time X File No PS 0774 00 Ap Knott BSc CEng ST amp C Report No R 510 2909 B MIMechE MInstMC CHIEF EXECUTIVE Page 4 of 4 161198 92 CERTIFICATE OF CONFORMITY SCS No Ex 90C2017 Re Issue This Certificate is issued for the electrical apparatus R007 1 S Interface Module Manufactured by Spectra Tek UK Ltd Swinton Grange Malton North Yorkshire Y017 0QR and submitted for certification by The Manufacturer This electrical apparatus and any acceptable variation theret
20. Ao Coil 110 0FF gt Latching mode disabled No function keys pressed Read register 2 gt 0x0000 press F5 F6 Read register 2 gt 0x0030 Register automatically cleared Read register 2 gt 0x0000 Example with latching mode enabled Turn on coil 110 Latching mode enabled Read register 2 gt 0x0000 No function keys pressed Press Fl F2 F3 Read register 2 gt 0x0007 Register not cleared by read operation Extra function keys added to register Register not cleared by read operation Read register sm Clear latch register 4 Registers For Writing Data To The Screen There are several ways of achieving this aim as any one method may be simpler for some users than other methods 4 1 Blanket coverage of the screen Registers 10 to 169 The Mercury 2e screen supports 8 rows of 40 characters 320 character positions in total Each pair of character positions is assigned a single Modbus register 160 registers in total Of the Modbus register DO D7 represents the right hand character ASCII value and D8 D15 represents the left hand character of the pair 4 2 Cursor Positioning Register 170 A single Modbus register is allocated to the cursor positioning function D8 D15 is the X co ordinate and D0 D7 is the Y co ordinate 4 3 16 bit unsigned integer Register 200 A single Modbus register is allocated which when written to displays at the current cursor position the value written as an unsigned number in the rang
21. CD offers a display Disp lay of eight lines high by 40 characters long Using standard size characters linewrap is automatic and operates in page format So after a character has been placed at the end of line eight in the bottom right corner of the LCD the cursor goes to the top of the screen again overwriting line 1 Graphics mode display is detailed on page 33 Keyp ad The keypad is programmed for standard or customised key set A click is audible each time a key is pressed and confirms operation Standard keypad layout is illustrated in Figure 4 showing numeric command symbols in larger type and alphabet keys in smaller type Senda Keypad There are three keyboard modes Upper case characters U Lower case characters L and Numeric Command N The current keyboard mode U LorN is shown in the bottom right comer of the LCD Press Shift to display the next keyboard mode Press Shift again for the next keyboard mode A third Shift keypress returns the display to the original keyboard mode The capability to change keyboard mode using the Shift key can be disabled enabled from the master device see page 27 161198 21 22 Table 2 Keystroke Characters A full list of standard characters for each keyboard mode together with their hexadecimal values are shown in Table 2 2
22. Code Mode Register 3 1 One shot mode 2 Disabled 3 Enabled 2 4 Set Weigand Card Reader Mode Register 4 1 One shot mode 2 Disabled 3 Enabled w Screen Control Coils w 99 coils to be allocated each one of which will recall the stored message associated with it Coils 1 to 99 Clear Screen Coil 100 Cursor On Off Coil 101 Cursor Up Coil 102 Cursor Down Coil 103 Cursor Left Coil 104 Cursor Right Coil 105 Home Cursor Coil 106 Clear Bar Code register input buffers Coil 107 3 10 Clear Weigand register input buffers Coil 108 3 11 Clear Composed Text register input buffers Coil 109 3 12 Enable Disable Latching Function keys Coil 110 3 13 Clear Latched Function key register Coil 111 NOTE on 3 12 and 3 13 H WwW N JD w w w co co yl rr o Two extra coils have been added one to enable disable the latching mode and the other to clear any latched values By default the function key register operates exactly as before i e the register is automatically cleared when read If the latching mode is enabled by turning of coil 110 the register is not cleared automatically To clear the register you must turn on coil 111 which both clears the register and resets coil 111 back to the OFF state Coil 110 OFF Latching mode disabled ON Latching mode enabled Coil 111 ON Clear latched register set coil 111 to OFF 161198 e g
23. ITIONS OF CERTIFICATION 1 This Certificate has been reissued so as to include the references EN50 014 and EN50 020 which were omitted from SCS Certificate of Conformity Ex 90C2016X dated 19th April 1991 It applies retrospectively to Products covered by that Certificate The Certificate has been reissued on 19th August 1994 to correct a typographical error 2 The use of the Sira Certification Service Mark is subject to the regulations applicable to the holders of SCS Certificates Like regulations also apply to the marking of the name of the Certifying Body and this Certificate Number 3 For the purpose of a System assessment the following parameters of the two separate intrinsically safe circuits may be used JS Pins 1 2 3 and 4 V max in 19 34V Ceq 0 Imax in 254mA Leq 0 W max in 1 07W Vout 1 2V Jl Pins 1 2 3 4 and 5 V out 29 4V Cext 0 11 micro Farads Iout 66 4mA Lext 135 micro Henrys ohm W out 0 262W Ceq 0 Leq 0 SPECIAL CONDITIONS OF USE 4 Only simple apparatus as defined by clause 1 3 of BS 5501 Part 1 1977 may be connected to terminals Jl pins 1 to 5 5 Excepting 6 below this equipment may only be used in conjunction with equipment complving with the requirements of Certificate No SCS No Ex 90C2017 6 The Mercury 2 unit may be uscd in conjunction with a bar code wand which may be unplugged Only the type bearing SCS No Ex 90C2016X may be uscd Page Sof 5 SIRA CERTIFICATION SERVICE 48
24. Terminal If the command Store to NVRAM is sent after the message then the contents of the SRAM are copied to the Non Volatile RAM NVRAM to ensure preservation in case of power failure If the Mercury 2e Terminal is turned off and subsequently turned on it copies the contents of NVRAM into SRAM restoring any messages down loaded up to the time the last Store to NVRAM command was sent If the set up mode is entered and left the contents of SRAM are copied to NVRAM automatically Blocks Blocks are strings of data in a fixed format which cannot be interrupted obtained from a read of digital inputs or from a bar code read or a card swipe The format distinguishes the data string from keypad entered data 161198 29 30 Point to Point Transmission Transmission of messages in point to point configuration is immediate i e at every key stroke or promptly after a card read or bar code swipe The control codes and escape sequences described in this section are available with the exceptions noted Transmitted messages follow the format lt STX gt ADDR FUNC ID DATA DMY CSUM lt ETX gt lt SIX gt ADDR FUNC DATA DMY CSUM lt ETX gt Start Transmission 025 A two byte address field set up in Telemetry Address with value 1 to 15 For multi drop mode see page 32 This is always 01 in point to point mode Determines type of information being transmitted with a single byte character For messag
25. Xon Xoff When enabled the Mercury 2e sends an Xoff and Xon to prevent the receive buffer being over filled If disabled over running the terminal s receive buffer may result in characters being lost This option is automatically disabled in multi drop mode Tx Xon Xoff When enabled the Mercury 2e stops or restarts sending data from its transmit buffer in response to Xoffs and Xons If disabled then the host computer may over run its input This option is automatically disabled in multi drop mode Block Structure When disabled data normally sent in Blocks see pg 29 is sent as raw data ie with no lt STX gt Addr Func ID DMY CSUM or lt ETX gt characters as shown on pg 30 19 20 Local Echo Digital Inputs Display Test Security Code The default security code is 000000 The six digit security code is programmed into the Mercury terminal from the host computer If the security code option is enabled the operator has to enter a matching code at the keypad to access Set up configuration Multi drop Modbus Modes In multi drop mode the host computer the master device transmits strings and commands to its population of Mercury 2e Terminals slave devices with an address data and message terminator structure The Modbus option only appears if a Modbus upgrade code has been purchased Telemetry Address When Multi drop Mode is enabled a unique Telemetry Address must be set for each Mercury 2e Terminal Fi
26. adecimal A0r to FF see Table 3 and available in 8 bit mode only The sequence to define a character is as follows lt ESC gt 19 num z data num is ASCII number of the character being defined between 160 and 255 data gives 8 bytes of data which must be supplied as ASCII characters For Pixel to ASCII character conversion table see page 33 Redefine a Function key or Enter with up to 8 ASCII characters placed in the following sequence at data lt ESC gt 23 Pn z data lt EM gt Pn is the number of the key being redefined Numbers 1 to 8 redefine F1 to F8 respectively and 9 redefines Enter 161198 Messages Messages in the form of characters or escape sequences that are sent to the Mercury can be recalled for display many times see Table 6 A total of 7 000 characters may be stored as messages in RAM Each message is assigned an identifying value between 1 and 99 A message should not be allocated to an identifier already in use The codes in the message can be any visible or control character except lt STX gt lt EIX gt and lt EM gt or the escape sequence for Set Up Message for Later Recall It is possible to create a message string to recall other messages Storing Messages On transmission to the Mercury messages are stored temporarily in Static Random Access Memory SRAM A message may be recalled as often as required but it is lost if the power is removed from the Mercury 2e
27. amp Power JS 2 Tx2 I S Comms amp Power J5 3 Rx1 I S Comms amp Power JS 4 Rx2 LS Comms amp Power J5 5 Screen Cable screen earth to Mercury 2e body 161198 67 68 161198 I S Interface Module Wiring Schedule 161198 Appendix E Pin Number 10 11 12 Description RS 232 Rx Input RS 232 Com RS 232 TxOutput RS422 485 B RS422 485 Com RS422 485 A 0 V Nom Supply Not Used 24 V Nom Supply RS422 485 B RS422 485 Com RS422 485 A Field connections to Mercury 2e 13 14 15 16 17 18 19 20 21 Tx2 Not Used Txl Not Used Rx2 Not Used Rxl 69 70 161198 Appendix F Communications RS422 485 and RS232 ports share a common OV rail which with the R007 s totally floating Interface Module RS422 Tx drivers are tri state devices which remain in a state of high impedance until data transmission when they are asserted this allows multi drop operation In point to point mode RS422 drivers are constantly active i e never in Hi Z state Multi drop communications are provided via RS422 or RS485 To connect RS485 to the Interface Module the Tx and the Tx terminals should be paralleled with the Rx and Rx terminals respectively See Appendix E The IS Interface Module R007 IS is used as the tri state communication port See Appendix E for the wiring schedule The transmitters require a high impedance state and a protocol to ensure that only one t
28. ate controlled R422 communications link between I S Interface Modules So these must be installed even if operation is in non hazardous areas The Mercury 2e LCD screen in multi drop mode operates in the standard page format with the exception that the eighth line is used as the editing area for composing blocks To avoid deletion of data being composed on Line 8 host operators should use lines 1 to 7 In the case of the host computer transmitting a Clear Screen escape sequence in Multi drop mode lines 1 to 7 of the Screen are cleared Line 8 is not affected On Line 8 an alpha numeric keypress causes the character to appear on the bottom line of the screen at column 6 Up to 30 characters can be composed into a message To edit use the back space key lt BS gt F8 in N mode When complete press Enter to queue the message for transmission If a function key is activated while a message is being composed the function code is added to the block buffer ahead of the message without affecting the composition of the message Messages are block based and therefore indivisible So the software handshaking facility Xon Xoff is automatically disabled if Multi drop Operation is selected in the Setup menu see Table 1 The Mercury terminal does not inhibit received characters being displayed on the 8th line of the screen So a message being composed may be overwritten on the screen although it will still be composed correctly into a
29. bled from the host computer by transmitting the escape sequence Disable Keyboard Enable Keyboard lt ESC gt 2 h lt ESC gt 2 P Using Shift key to change the keyboard mode can be disabled re enabled from the host computer by transmitting the escape sequence Disable Shift Key Enable Shift Key lt ESC gt 13 Z lt ESC gt 12 Z Set up menu however can be entered as before by pressing Shift four times then Enter NOTE When Shift is disabled the ULN mode indicator is not displayed on the screen Version 3v2e and above have two further escape sequences to enable and disable the PIN Mode When enabled any text entered in the Composed Text Input will be shown as a dot character but will be transmitted to the host as the actual text that was entered Enabling PIN Mode has no effect in point to point mode PIN Mode disabled i e text visible lt ESC gt 24 0z PIN Mode enabled i e text shown as dot characters lt ESC gt 24 1 2 e g PIN Mode status Text entered Text shown Text sent via keyboard on display To host Disabled 1234567890 1234567890 1234567890 Enabled 1234567890 1234567890 27 28 User Definable Characters User Definable Keys There are 96 ASCII two digit codes available for users to assign to escape sequences that are frequently required These are hex
30. ccess Setup by pressing Shift four times then Enter On the S500 keyboard the Shift key is invisible and is located below the F4 key and to the left of the 4 key The first parameter and variable of the Setup menu is displayed on the bottom line of the LCD If no security code has been enabled options can be selected and set If the Security Code has been enabled the prompt on the LCD asks for a six figure security code If no code is entered the options menu can be viewed but not configured V3 1 and above Use the and Y keys to move the cursor to the required parameter and the keys lt to select an option On the terminal automation keyboard the Y am keys are not indicated The user must use H T M O instead Continue selecting parameters and options until the configuration of the terminal is complete Press Enter and the selected options are entered into NVRAM Parameters and options available are listed in Table 1 and described below Default settings on cold start appear in bold Performing a cold start will restore all default settings and erase any stored messages A Cold Start can be performed in one of three ways 1 Power on with link 4 on PCB set to left hand position ie 1 2 Power on holding down the two leftmost and two rightmost keys on the bottom row 3 In Setup mode press the bottom left key ie O STOP VIEW ALARM This will display the message Cold Start NO Pr
31. customised characters 23 24 Table 4 Control Character Actions Escape Sequence The effect of each standard ASCII character is given in Table 4 Character Sting lt NUL gt lt SOH gt lt EOT gt lt ENQ gt lt ACK gt lt HT gt lt SO gt lt SI gt lt DLE gt lt DC2 gt lt DC4 gt lt NAK gt lt SY N gt lt ETB gt lt EM gt lt SUB gt lt FS gt lt GS gt lt RS gt lt US gt lt SIX gt lt ETX gt lt BEL gt lt BS gt lt LF gt lt VT gt lt FF gt lt CR gt lt DC1 gt lt DC3 gt lt CAN gt lt ESC gt lt EM gt lt IND gt lt DEL gt 7Fy Action These characters terminate escape sequences and are not displayed Codes to start and stop blocks Sounds Beeper Back Space Line feed Carriage Return Xon Causes Terminal to continue transmitting Xoff Causes Terminal to stop transmitting Cancels Escape Sequence Introduces Escape Sequence Special Terminator for messages Processed as down arrow key Terminates any escape sequence which is in progress Each character can act as a standalone control code as above or can be combined in strings to create escape sequences that offer further control and data transmission opportunities To combine characters into strings the lt ESC gt control code must begin all sequences The lt ESC gt 1B code indicates to the unit receiving data that the following string should be
32. e 0 to 65535 161198 161198 4 4 4 5 e g 16 bit signed integer Register 201 A single Modbus register is allocated which when written to displays at the current cursor position the value written as a signed number in the range 32768 to 32767 Note that positive numbers have no leading plus sign whereas negative numbers have a preceding minus sign 96 bit Packed Data Floating Point number Registers 202 to 207 6 registers will be allocated which when written to display at the current cursor position the value written as a Packed Data FP The lowest numbered Modbus address field of the pair contains the bits lt 95 80 gt and the highest numbered register holds the bits lt 15 0 gt The conversion occurs when the higher numbered Modbus register is written to The format of the number displayed is as follows X XXXXXXE XX i e optional minus compulsory 1 digit optional decimal point up to 6 optional digits and an optional 2 digit exponent part with optional minus sign 0 05 appears as 5 000000E 2 145 667 appears as 1 456670E2 1 000 appears as 1 000000 0 0 appears as 0 0 Note positive overrange If number gt 9 999999E99 overrange displayed positive under range If number lt 1 000000E 99 underrange displayed negative overrange If number gt 9 999999F99 overrange displayed negative under range If number lt 1 000000E 99 underrange displayed The FP for
33. e master It does this on Mo de receipt of a valid Block of matching address i e the Multi drop Protocol is correct and takes the form lt STX gt 0 1D lt NUL gt Y lt ETX gt This string acknowledges that a message with the correct protocol ie FUNC CSUM etc has been received not that the message data is recognised So if a message is constructed with a non existent Escape sequence in DATA yet with the correct protocol then a Multi drop Acknowledge is transmitted but the Mercury 2e ignores the instruction When the Digital Inputs are read to the block no information is relayed back to the Master If Multi drop Acknowledge is enabled however then the acknowledge would confirm that the message was received correctly 161198 65 66 161198 Appendix D Mercury 2e Terminal Pin No Description Application Terminal Wiring J1 Simple equipment I S interface Schedule jt 1 Input 1 Digital Input Jl 2 Input 2 Digital Input Jl 3 Input 3 Digital Input Jl 4 Input 4 Digital Input J1 5 Common J2 Card reader Wiegand coil J2 1 Coil red Card Reader J2 2 Coil black Card Reader J2 3 Screen Card Reader J2 4 P amp F Card Reader J2 5 P amp F Card Reader J3 Non 1 S RS232 interface J3 1 OV Non 1 5 Comms J3 2 Rx in Non 1 5 Comms J3 3 Tx out Non LS Comms J3 4 OV Non 1 5 Comms J4 Non l S External Power J4 1 12V Non 1 5 Power J4 2 OV Non 1 5 Comms J5 LS interface module JS 1 Tx1 I S Comms
34. ed are given in Appendix C 161198 Graphics Display Mode Graphics Display 161198 Table 7 Graphics Mode Pixel Data To select Graphics with Text or Graphics alone see page 27 Note that on Mercury terminals with text only the enhanced software described below is not available In Graphics mode display is made up of 64 rows of 40 columns Each column position is a tile made up of 6 pixels across by 1 pixel in height No cursor is visible in graphics mode As a tile is written a virtual cursor is incremented The virtual cursor has its own set of coordinates allowing access to graphics without corrupting text currently displayed Coordinates are defined by the byte number and row number calculated from the top left corner of the display With one byte equating to 6 pixels simple or bitmap images are positioned horizontally from the 6 pixel boundanes Graphics may be downloaded as a bit map image from off line Graphics Converter Software available from Daniel Europe Ltd or designed directly on the display See page 35 for examples of simple graphics and their design Each tile is individually accessible and each pixel pattern is uniquely mapped to an ASCII character defined in Table 7 below In the table a O represents a clear OFF state pixel and a represents a pixel in the energised ON state The pixel pattern is read left to right 000000 SP 0 0000 0 00000 0000 P 00000 0 000 1 0000 A 000 Q
35. egislation and or Installation Codes This certificate and its schedules should always be reproduced in its totality Page 2 of 5 SIRA CERTIFICATION SERVICE 161198 CERTIFICATE OF CONFORMITY NUMBER Ex90C2017 Re Issue DATED 19th August 1994 APPARATUS The R007 unit is intended to be located in the non hazardous area and provides galvanically isolated power and data lines for connection to the hazardous area The unit comprises two printed circuit boards both fully coated with insulating lacquer Safety is achieved using infallible transformers and opto isolators The complete assembly is mounted inside a plastic box sized approximately 100 x 90 x 40mm which is intended for rail mounting Page 3 of 5 SIRA CERTIFICATION SERVICE 161198 99 CERTIFICATE OF CONFORMITY NUMBER Ex 90C2017 Re Issue DATED 19th August 1994 DRAWING NUMBER SHEET REV P053044D POS3045D POS3029F P053039F P053042E POS3042E POS3042E POS3043E POS3043E POS3043E POS3027E POS3037E POS3028D POS3038D R007032D R007035D N O T OUO ND DSDDSO SDD OO D O R007007D R007008D R007034D R007001D POS3030E R007002B R007011E pet Q ONN mm 56 DATE 20 Feb 91 20 Feb 91 12 Apr 91 27 Sep 90 21 Nov 90 26 Jan 91 20 Feb 91 21 Nov 90 21 Nov 90 21 Nov 90 26 Nov 90 26 Nov 90 28 Feb 91 28 Feb 91 09 Oct 90 12 Oct 90 04 Sep 90 04
36. er D8 D15 represents the left hand character ASCII value and the low order D0 D7 represents the right hand character of the pair Registers For Receiving Data From the Mercury 2e Data Pending input register Register 1 A single resister can be read to determine if there is any valid data in the Bar Code Card Reader or Text input registers This single register contains 3 separate numbers each corresponding to the number of relevant readings that are currently buffered in the Mercury 2e waiting to be read D0 D3 number of buffered text messages D4 D7 number of buffered Weigand card readings D8 D11 number of buffered Bar Code readings Function Key register Register 2 DO D7 1 means Function Keys Fl to F8 have been pressed Note there is no time stamping Bar Code input registers Registers 3 to 18 A set of 16 Modbus registers are used to hold the barcode reading Up to 5 barcode readings may be buffered waiting to be read If further barcode readings are made without the buffer being read the subsequent data is lost For each Modbus register the high order D8 D15 represents the left hand character ASCII value and the low order DO D7 represents the right hand character of the pair If the barcode is less than 32 characters long then the Modbus register half following the last valid Character will have the value 00 Hex as will all the other Modbus registers in the rest of the register set 86 5
37. es transmitted from the Mercury 2e terminal this is always D 44 and R 524 for messages received by the Mercury 2e terminal Identifies source of data from a single byte B 424 data from Security Card swipe C 43 data from Bar Code Reader E 45y data from digital input read Other ID codes are available in Multi drop mode see page 32 Information being sent from the identified source data from Security Card swipe as 32 bits encoded into 8 bytes of ASCII hexadecimal data from Bar Code Reader printable as it stands data for Digital input reader as a single byte Single character usually 00 but if this would result in the following CSUM byte being a control character the DMY is set to 20 A single byte checksum character which is the 7 bit negated algebraic sum of all the characters in the string from lt STX gt to DMY inclusive End Transmission character 034 see Table 4 Examples of messages are given in Appendix C ein Multi Drop Telemetry Multi Drop Mode 161198 Screen In multi drop mode the master device polls the slave Mercury 2e Terminals Up to 15 Terminal systems can transmit to a single host computer via a single twisted pair cable utilising RS485 levels two pairs if RS422 is used The Multi drop master initiates all communications and the slaves can only reply when requested Multi drop operation is supported over the RS485 and tri st
38. essing the same key will toggle between Cold Start NO and Cold Start YES If YES is shown pressing Enter will cause the machine to pause and then perform a cold start To retum to setup mode press Enter when NO is displayed 161198 Table 1 Set Up Mode Menu Parameters amp Options Explained 161198 Parameter Options Baud rate 50 150 300 600 1200 2400 4800 9600 Word Length 7 8 Stop Bits 1 2 Parity None Odd Even Mark Space Rx Xon Xoff Enabled Disabled Tx Xon Xoff Enabled Disabled BEL Length 0 05s 0 1s 0 2s 0 4s 0 8s 1 0s Beep Loudness 1 to 3 Stars to Key Click Off 7Oms Full Stop Key Transmit Full Stop Comma F8 BS Key Transmit lt BS gt F8 Rubout Key Transmit lt BS gt lt DEL gt Keyboard Modes NULNU Security Code Enabled Disabled Telemetry Address 1 to 15 Telemetry Mode Point to Point Multi drop Modbus Block Structure Enabled Disabled Multi drop acknowledge Enabled Disabled Software Version Indicates Version Number Word Length For communication and operation Mercury 2e can be set to use 7 or 8 bit ASCII codes When communicating in 8 bit format with operating mode set to 7 bit the receiving Mercury ignores the top bit D7 When the Mercury is transmitting the top bit is set to zero Note that the enhanced character set of 256 codes is only available when communication and operation are both set to use 8 bit mode Rx
39. fteen Unique addresses 1 to 15 are available Address 0 is reserved for broadcast operation when the same message is sent to all slave devices simultaneously Multi drop Acknowledge When Enabled an acknowledgement reply is sent in response to every valid received message of matching address except a broadcast Local Echo mode is a facility to help in checking that the keyboard barcode or card reader is functioning correctly When set all keypresses readings or swipes echo the transmitted characters to the screen The characters are displayed in current screen mode and at current cursor coordinates so the screen display should be set to the appropriate mode before Local Echo is set Local Echo toggles on and off by pressing F1 or START BATCH 1 on the terminal automation keyboard when in Setup In Local Echo mode the terminal continues to communicate with the host Press Enter to return to normal set up mode Pressing F6 or START BATCH 6 on the terminal automation Keyboard while in the set up mode gives a single line display showing the state of the digital inputs in real time Press Enter to return to normal set up mode Pressing F3 or START BATCH 3 on the terminal automation Keyboard while in setup mode performs a display test The screen will go black then white and the terminal will automatically exit setup mode and return to normal operation 161198 Liquid Crystal In character display or text mode the L
40. g Procedure Check that the connection panel cover or security card reader is secured to the face of the Terminal this prevents any dust or water from entering the unit Unplug the bar code wand and make sure the protective cap is fitted on to the bar code reader input socket on the underside of the unit Remove the plastic protective plugs covering the four corner mounting holes by pushing the plugs from behind Retain the plugs in a safe place It is not necessary to remove the back of the terminal Place the Terminal against the surface on which it is to be mounted at the correct position and height for operator use and mark the position of the four mounting holes using the dimensions given see Fig 2 Drill and plug if necessary the mounting holes on the mounting surface Place the Terminal against the mounting surface and secure the Terminal using 4 off M5 cap head screws 26 mm shank or similar To avoid electro chemical corrosion of the aluminium Case the fixing bolts and nuts should be thoroughly greased Check that the Terminal is securely fastened to the mounting surface and re insert the plastic protective plugs into the four corner holes 161198 Connections Intrinsically Safe Power and communication connections to the Mercury 2e Connections Terminal are made via the R007 intrinsically safe interface module The IS interface module should be installed in a safe area The cable screen should be connected t
41. given as a guide in helping set up the Modbus option of Mercury 2e To recap The Mercury terminal will be the Modbus slave device Only standard Modicon RTU Modbus is supported The default serial port settings are 9600 8 N 1 Complex commands such as graphics images and backdrops should be preloaded into the Mercury and stored as messages These can be recalled when in Modbus mode Due to processor limitations the Modbus timeout interval has been fixed at 0 8 seconds The Mercury 2e will respond to the following Modbus functions PRESET SINGLE REGISTER 1 4 10 196 200 215 READ EXCEPTION SIATUS LOOPBACK TEST 2 15 FORCE MULTIPLE COILS 1 109 16 PRESET MULTIPLE REGISTERS 1 4 10 196 200 215 1 READ OUTPUT STATUS 1 1 109 2 READ INPUT STATUS 1 5 3 READ OUTPUT REGISTERS 1 1 4 10 196 200 215 4 READ INPUT REGISTERS 1 35 5 FORCE SINGLE COIL 1 109 6 7 8 Notes 1 Since there is no way of reading back any of the output registers or output coils function codes 1 and 3 always return zeros 2 Function code 8 currently only supports Diagnostic Code 0 Return Query Data Example 1 Read Digital Inputs uses Function 2 Read the status of digital inputs 1 to 5 ie input coils 1 to 5 from slave device number 1 Query Message 01 02 00 00 00 05 B8 9B Reply Message 01 02 01 10 AO 44 88 89 Example 2 Read Data Pending Input Registers uses Function 4 Read the Data Pending input register input regis
42. i state control Card Reader The security card reader is factory fitted in place of the removable front panel and is secured by four socket head bolts A 32 bit binary number contained on the customer card is read when the card is passed through the card reader and the information is made available to the host computer for a system response Bar Code System The bar code wand connects to the Mercury 2e Terminal via a single weather proof input socket located on the bottom of the unit A weather proof blanking plug connected to the input socket protects the socket when the wand is removed The bar code laser scanner is a separate unit wired to the Terminal Installation is covered in the IS3000 Laser Scanner Manual 161198 7 Sitting the Mercury Terminal For your safety remember to implement all relevant precautions and procedures In the United Kingdom installations must comply with BS5345 part 4 The Mercury terminal is weather proof to IP65 so it can be installed outside as well as under shelter or indoors Mount the terminal in a vertical position on an even surface strong enough to support its weight of 5 5 kg Position the unit so that the LCD and Keypad are convenient for the operator usually at eye level Note that in strong direct sunlight display clarity and service life may be reduced 161198 Fig 2 Mounting the Mercury 2e Terminal a Zu i 192 7 Y 326 8 0 3 161198 9 10 Mountin
43. ighest relevant Modbus register A two character string without auto increment Register 171 A single Modbus register is used which when written to puts two characters on the screen at the current cursor position The cursor position is not moved Of the Modbus register the high order D8 D15 represents the left hand character ASCII value and low order D0 D7 represents the right hand character of the pair 4 10 An 8 character string without auto increment Registers 172 to 175 A quad set of Modbus registers puts 8 characters on the screen at the current cursor position when the last of the 4 register quads is written The cursor position is not moved Of the Modbus register the high order D8 D15 represents the left hand character ASCII value and the low order D0 D7 represents the right hand character of the pair The next Modbus register represents the next pair of character positions 161198 161198 4 11 A 40 character string without auto increment Registers 176 to 195 This is similar to paragraph 12 but by reserving 20 registers allows a complete line of 40 characters to be written in one go 4 12 A two character string with auto increment 5 1 5 2 5 3 Register 196 A single Modbus register is used which when written to puts two characters on the screen at the current cursor position and then moves the cursor position along two character positions Of the Modbus register the high ord
44. ith card reader 97 mm without card reader 67 mm 5 5Kg Cobalt Blue Epoxy Supertwist Liquid Crystal Reflective filters Black on silver 40 characters 8 lines 6 x 8 dot character cell 128 pre defined and 96 downloadable ASCII characters in 8 bit mode 96 ASCII character set in 7 bit mode Character height 4 2 mm 240 x 64 graphic pixels forming 2560 tiles Character cell height 4 2 mm or 12 7 mm Sealed membrane switches Polyester outer layer with tactile response Damp wipeable for clean sterile environments 30 keys including 8 functions Option for Audible sounder via membrane selected in Setup Upper Case U Lower case L Numeric Command N 4 whetted inputs for external contacts or I S simple apparatus Based on VT 100 To and from the host computer in full or half duplex using standard asynchronous 7 bit or 8 bit ASCII characters 50 9600 baud 37 38 Buffers User Memory Digital Inputs Inputs identified by ID Multi Drop Mode Multi Drop Protocol Environmental Conditions Operating Temperature Storage Protection Certification Sira Safety Services Ltd Quality Assurance Incoming buffer 2048 characters long Xon Xoff control selected in Setup Xoff sent to host computer when buffer is within 10 bytes of being full Xon sent when Terminal buffer is within 5 characters of being empty In multi drop mode Xon Xoff control is disabled 8K NVRAM for rapid
45. l at address 01 the following string needs to be sent lt STX gt 01 RT E ST lt SP gt k lt ETX gt Using the format described above the Master sends a block to read the output buffer on a Mercury 2e terminal with Multi drop address 01 as follows lt STX gt 02 ADDR 01 30 314 FUNC R 521 DATA lt ESC gt 9 1z 1B 5B 3F39 3B 31 7A DMY lt NUL gt 00 The checksum can be calculated to be 77 which is the ASCII code for the letter w The block to be sent to the terminal takes the form lt SIX gt 0 1 R lt ESC gt 9 1 z lt NUL gt w lt EIX gt The Re send Last Block command see page 26 allows the buffer to be read repeatedly 161198 Read Digital Inputs The Control Character String to read the Digital Inputs in Multi drop mode is lt ESC gt 4 z Using the method demonstrated above the block to be sent in multi drop mode becomes lt STX gt 0 1 R lt ESC gt 4 z lt NUL gt h lt EIX gt This action causes the status of the external contacts to be copied into the output buffer It is possible to incorporate a Block Read instruction into a single block command by putting into the DATA field both the Control String to read the digital inputs and the Control String to read the block buffer Multi Drop If the destination terminal is set up with Multi drop Acknowledge Enabled then the Mercury 2e terminal sends Acknowledge an Acknowledge Block back to th
46. l time of 20ms an absolute maximum time of 50ms and and a minimum time of 10ms At time D the slave Mercury 2e has enabled its transmitter and started to transmit the message requested by the Host Interval T4 depends upon the message length and baud rate At time E the slave Mercury 2e has transmitted the stop bit of the final character lt ETX gt At time F the slave disables its transmitter to the Hi Z state The interval TS is determined by the Mercury 2e system and its maximum time is shown in the table on page 83 161198 eA3 1u1 qesI e s u1 Jayndwios 1soH Payu JqLsIq e s HI Z INSI JN SARIS eA19 u asuodsay UOISSTUISURI Z INDI JN DAPIS Z Am 3g lN ALIS uoIsstwsuel JsoH TASI AO poyeystry 19497 AS a E IBA9T AO Posu Te49T AG 7 A H d a og V i aden de 388 lt 2235 fab e 2 an 53 m gt gt 73 TVNOIS 94 V TVNODIS 9A q 161198 74 161198 Appendix G Please select from INTRINSICALLY SAFE INSTALLATION the list to view these drawings 1 Typical Wiring Mercury 2e System P053 120 D 2 Full Duplex Multi drop RS422 Master Slave Wiring P053 127 D 3 Half Duplex Multi drop RS485 Master Slave Wiring P053 128 D 4 EM Control Drawing P053 121 D 161198 79 76 161198 161198 Modbus Option Operation Appendix H The Mercury 2e Modbus interface is a factory fitted option which is specified on
47. mat is as follows Word 5 Word 4 Word 3 0 Operand 15 14 13 12 11 0 15 0 Type SM SE 3 Digit Exp 11 Digit Integer 16 Digit Fraction Zero 000 999 00 00 Hnrange 000 999 xxx0 xxx90 00 01 99 99 Inrange 000 999 xxx0 xxx90 00 01 99 99 SM Mantissa Sign SE Exponent Sign 84 85 4 6 4 7 lt 4 8 4 9 16 bit unsigned integer in 10mm high characters Register 208 As paragraph 3 above but 10mm high text characters displayed on the graphics screen are used 16 Bit signed integer in 10mm high characters Register 209 As paragraph 4 above but 10mm high text characters displayed on the graphics screen are used 96 bit Packed Data Floating Point number in 10mm high characters Registers 210 to 215 As paragraph 5 above but 10mm high text characters displayed on the graphics screen are used Note that in paragraphs 9 12 the characters sent will overwrite the current screen data all control characters will be ignored and after a control Character all subsequent data in the Modbus registers will also be ignored This applies to all characters and thus any string may be shortened by putting for example a null character after the last character to be displayed The screen will wrap if the character string exceeds column 40 of the display Valid character data is sent to the display when data is written to bits D0 D7 of the h
48. n the IS interface module in the safe area is connected On connection a beep sounds and the initialisation routine starts Model number and software version are detailed on the LCD then the cursor appears and the keyboard mode is indicated in the bottom right corner Automatic Message Recall A feature of the Mercury 2e terminal is the automatic Message Recall Immediately after powering up and the Spectra Tek version message has been displayed the Terminal automatically recalls Message No 1 For example this may be a string of text or an escape sequence to set keyboard mode Point to Point Mode The single Terminal dumb mode is the default mode of operation with simple transmission of characters to the host computer on keypress and display of received Characters Multi drop Mode Up to fifteen Mercury terminals can be installed a single multi drop operation The multi drop system uses the IS Interface Module as the tri state controlled communication port Communications Configurable in setup mode selected communication options are held in non volatile RAM Set up mode may be password protected 17 18 Set up Setting options Cold Start In Set up mode the Mercury 2e is configurable for system operation and communication with the host computer Setup is selected from the keypad only and while in setup mode no characters are transmitted by the terminal Parameters and options are listed on the Setup menu A
49. nnecting to the Terminal Blocks 161198 After installing the intrinsically safe interface module you can proceed to connect power and communication wiring to the Mercury Terminal For the cable entry into the Mercury Terminal fit a suitable insulated cable gland M20 on the four core or twin twisted pair cable The terminal connection blocks are protected by a cover or the card reader if fitted Remove the cover by unscrewing the four retaining screws Power and communication connections are made to terminal block J5 pins 1 to 4 The cable screen is connected to pin 5 Simple Equipment Interface Digital Inputs connections are located at J1 pins 1 to 5 When the host computer queries the digital input status a short duration 5V 1 KQ source whetting signal senses whether an external contact is open or closed The Simple Equipment Interface digital inputs are intrinsically safe and have the following safety description Vout 294V lout 66 4mA Wout 0 262W Cext 0 11yF Lext 8 4mH L Rext 135uH Q Ceq 0 leq 0 The common connection J1 pin 5 is ata logic 0 V Only volt free contacts are permitted for use with these digital inputs 13 Connecting a Terminal in a Safe Area Connecting the Card Reader Connecting the Bar Code System 14 For non intrinsically safe connections specify the Mercury 2e General Purpose RS232 option to be fitted on the terminal Operation in Multi drop mode is not possible
50. ntages of galvanic isolation or multidrop communication features are required An optional non intrinsically safe version of the Mercury 2e which does not require an IS interface module may be used in a safe area This version provides RS232 communications only and is powered by an external 12 V supply Nomenclature and Conventions In this manual ASCII single characters which are either control or non visible codes Hexadecimal 00 1F 20 and 7F are indicated by enclosure in lt gt for example lt ESC gt Character strings which are indivisible sequences are shown between quotation marks for example lt ESC gt 2 J In the ASCII 7 and 8 bit code sets used by Mercury 2e a character is represented by two digits each in the range hexadecimal 0 to F For example lt SP gt the space character is defined 205 161198 Installation Mercury 2e Mercury 2e Terminals are approved for operation within a System hazardous area when connected to a R007 intrinsically safe interface module They may also be used within a safe area using an RS232 interface The Intrinsically Safe Interface Module provides mutual galvanic isolation between 24 V d c power the I S hazard area connection and the host communication ports These connections to the Mercury 2e Terminal allow a cable length of up to 1 kilometre The communication ports provide for RS232 and differential transmit and receive terminals for RS422 485 with tr
51. ntrinsic Safety Card reader is certified for use with Mercury 2e Terminal see Appendix A Environmental Conditions Operating Temperature 20 to 50 C Storage 20 to 60 C Protection IP65 Standard Ingress protection 6 dust 5 waterjet Bar Code Interface Part No R008 WO Installed with Mercury 2e Readable Codes automatic Code 39 3 of 9 Extended code 39 Code 128 UPC EAN JAN Interleaved 2 of 5 Codabar NW7 Decode Direction Interface interprets codes read in either direction 161198 39 40 Bar Code Wand Part No R008 WAND Performance Data Cable Optical Resolution Tip Material Intrinsic Safety Scan Speed Environmental Conditions Operating Temperature Storage Protection 1m coiled cable with waterproof connection 0 19 mm Replaceable Sapphire The bar code wand is certified for use with the Mercury 2e Terminal as an associated apparatus EEx ia IIC 14 SCS No Ex90C2016X see Appendix A 10 to 120 cm per second 20 to 50 C 40 to 75 C IP64 Standard 161198 I S Interface Part No R007 IS Installed in Safe Area Module Physical Data Overall Dimensions Height 110 mm Width 85 mm Depth 40 mm Weight 250 grams approx Material Plastic Colour Green IS Terminals 20 V 100 ohm nominal galvanically isolated IS Cabling See page 10 Mounting 35mm transverse rail DIN 46277 or by screws on 90 mm centres Power 20 32 V d c 2W maximum Nominal 80mA at 24V
52. o J5 pin 5 within the Mercury 2e A WARNING Power must be disconnected before connecting or inspecting the IS interface module Co nnecting the LS No intrinsically safe earth is required as the unit is Interface Module 9alvanically isolated Mount the IS interface module on to a DIN standard DIN 46277 33mm transverse symmetrical rail Alternatively secure the IS module by 2 off x 4 mm screws through the red latches in the base the latches must be sprung out to their extended positions For the complete inter connection diagram see Appendix G The interconnection cable between the safe area IS Interface Module and the hazard area Mercury 2e Terminal requires four cores which may be either two twisted pairs or a quad Where a quad is used diagonally opposite cores should be paired to reduce any communications cross talk Each pair is restricted to the following maximum parameters Loop Resistance 40 O Capacitance 142 nF max L R Ratio 33 pH Q Inductance 0 6mH For example a 1mm quad cable has approximately the following parameters Resistance 38 Q km loop Capacitance 55 nF km L R Ratio 12 5 pH Q Inductance 0 48mH km For a cable length of 1km this would satisfy safety and operating requirements The wiring schedule for the IS interface module is listed in Appendix E 161198 11 Fig 3 LS Interface Module a lt z LATCH 161198 12 Connecting the Mercury Terminal Co
53. o is specified in the schedule to this Certificate and the documents therein referred to Sira Certification Service being an Approved Certification Body in accordance with Article 14 of the Council Directive of the European Communities of 18 December 1975 76 117 EEC certifies that the apparatus has been found to comply with the Harmonised European Standards BS 5501 Part 1 1977 EN 50 014 BS 5501 Part 7 1977 EN 50 020 and has successfully met the examination and test requirements which are recorded in a confidential Test Report The apparatus marking shall include the code EEx ia IIC Tamb max 50 C Page 1 of 5 SIRA CERTIFICATION SERVICE 93 Registration Number 011 Certificate SCS No Ex 90C2017 Re Issue 9 The supplier of the electrical apparatus referred to in this Certificate has the responsibility to ensure that the apparatus conforms to the specification laid down in the schedule to this Certificate and has satisfied the routine verifications and tests referred to therein 10 This apparatus may be marked with the Distinctive Community Mark specified in Annex II to the Council Directive of 16 January 1984 84 47 EEC Date 19th August 1994 File No P 0059 00 1 A AR ID Knott BSc CEng MIMechE MInstMC CHIEF EXECUTIVE Sira Certification Service Saighton Lane Saighton Chester CH3 6EG Great Britain nn AU I The use of this apparatus will normally be the subject of National L
54. ocation of the tile to where the virtual graphics cursor will move Tile column 1 is at the left side of the screen and tile column 40 at the right so Pc refers to the column location of the tile The remaining Control character strings listed in Table 6 on page 26 for Character Display Mode apply equally in Graphics Mode 161198 The facility to draw a line or box is not available in the text only version of Mercury 2e The fully enhanced Mercury 2e is capable of handling downloaded bitmap images generated off line as well as these simple line and box drawings Draw Line Aline can be drawn at any angle using the following sequence lt ESC gt 18 4 x1 y1 x2 y2 where x1 pixel number and y1 row number give the pixel coordinates of the start of the line and x2 y2 give the pixel coordinates of the end of the line Draw a Solid Box To draw a solid box use one of the following sequences Solid black box lt SC gt 18 2 x1 yl x2 y2 z Solid white box lt ESC gt 18 3 x1 yl x2 y2 z where x1 pixel number and y1 row number give the pixel coordinates of the top left corner and x2 y2 give the pixel coordinates of the bottom right corner of the box Downlo ading a When downloading a graphics bitmap image enter the Graphic Bitmap position and size of the image in the following sequence Image to Screen lt ESC gt 18 1 x1 y1 wdth hgt z data where x1 byte number and y1 row number are the coordinates
55. racter to be defined Redefine lt ETX gt character where p is a single character to be defined Restrict keyboard to U and N modes Allow keyboard U N and L modes Change junction of lt FF gt character to Clear Screen Revert Junction of lt FF gt character to line feed Select text page number lt ESC gt 15 5 z lt ESC gt 15 6z lt ESC gt 14 z DATA lt EM gt lt ESC gt 16 1z p lt EM gt lt ESC gt 16 2z p lt EM gt Shou a ls 1z lt ESC gt 17 2 z ESC gt 221 12 lt ESC gt 1 num Y lt ESC gt 1 num F 161198 Specifying Screen 161198 Mode Disabling Keyboard or Keyboard Mode Selection Pin Number Up to three separate screen pages can be controlled at a time from the host computer to display two text pages and a graphics image The screen pages can be individually controlled to display text only graphics only or a combination of text with graphics The following specify screen mode lt ESC gt 20 0z lt ESC gt 20 1z lt ESC gt 20 2z Text and graphics off Text on graphics off Graphics on text off Text and graphics on with the screens logically O Red Text and graphics on with the screens logically XO Red Text and graphics on with the screens logically ANDed lt ESC gt 20 3z lt ESC gt 20 4z lt ESC gt 20 5 z Keyboard entry is disabled re ena
56. ransmitter is allowed to drive the bus at any one time To avoid contention the transmitter is enabled in the marking state see Fig 5 Once a message has been completely transmitted there is a period of time before the transmitter is tri stated high impedance state This period depends on the baud rate see the table below The master device must wait for this period before enabling its transmitter once more Tri state disable times at various baud rates Baud Rate Time in milliseconds 50 300 150 120 300 60 600 35 1200 25 2400 20 4800 20 9600 20 161198 71 72 RS485 Signal Levels Fig 5 illustrates signal levels on Multi drop RS 485 lines At time A the Host computer has determined that the RS485 link is not being used previous polled message has been received and enables its transmitter The B signal then moves from its Hi Z state to the marking level a high level At the same time the A signal moves from its Hi Z state to the marking level a low level The Host then sends out its message This occupies the time interval T1 At time B the Host has sent the stop bit for the final character lt FTX gt The Host can now disable its transmitter and at time C the line retums to its Hi Z state The interval T2 is determined by the Host but it should be short enough to ensure that the bus is tri stated before the slave replies The interval T3 is the response time of the slave Mercury 2e which has a typica
57. recall of user graphics or characters Data is the binary value of the 5 readable inputs biased by 204 D7 Always a zero D6 Always a zero D5 Always a one D4 Card presence indicator Bit is a 1 if card in slot D3 Digital input 4 This bit is a 1 if a contact is closed D2 Digital input 3 This bit is a 1 if a contact is closed D1 Digital input 2 This bit is a 1 if a contact is closed DO Digital input 1 This bit is a 1 if a contact is closed A 414 Operator keypress B 424 Security Card C 431 Bar Code reader D 44 Function key E 45 Digital Input Maximum of 15 terminals may be multidropped via IS interface modules Spectra Tek proprietary based on ANSI X3 20 to 50 C 20 to 60 C IP65 Standard Ingress protection 6 dust 5 water jet EEx ia IIC T4 SCS No Ex90C2016 X BS5750 Part I P 161198 Non I S Mercury Part No R004 e GP 2e Terminal The non IS terminal has similar specifications to IS Terminal Unit may be used as a stand alone safe area Terminal powered by a 12 V 1 Watt supply with an RS232 port Not intrinsically safe because of the voltages used with the RS232 port Security Card R005 CR Reader Performance Data Principle of Operation Wiegand Effect Comprises permanent magnets and sensing coil Card Code 32 bit binary plus start and stop bits 16 bit customer location plus 16 bit card number I
58. t has or contains a voltage in excess of 250 V rms ac or 250V dc 4 For the purpose of a system assessment the following parameters may be used V max out 19 34V max out 254 mA W max out 1 07W Ceq 15 4nF Leq 0 CExt 284 nF L R Ext 33 micro Henrys ohm Tamb max 50 C Page Sof 5 SIRA CERTIFICATION SERVICE 161198 57 58 161198 161198 59 60 161198 Appendix B References 1 Hand Book of Reliability Data 4 British Telecom 2 BS5501 Equipment for potentially explosive atmospheres 161198 61 62 161198 Appendix C Using Mercury 2 Examples of how to use the Mercury 2e escape codes to 3 complete actions are given below Take a few minutes to in Multi drop familiarise yourself with the method for designing blocks Mode and messages or graphic images Text Transmission This example runs through the method to send a text message to a Mercury s display The text used in this example is the word TEST Using the format of a block we can examine how it is composed lt STX gt ADDR FUNC DATA DMY CSUM lt ETX gt lt SIX gt character always starts a block and is sometimes known as the Control B character The terminal needs to receive the character Hex value 02 ADDR Before any transmission is made determine the destination terminal address This address is set manually in the Set up mode on the terminal and is a number between 1 and 15 The ADDR field is a two b
59. ter 1 from slave device number 1 Query Message 01 04 00 00 00 01 31 CA Reply Message 01 04 02 00 00 B9 30 Example 3 Clear the Screen uses Function 5 Clear the screen ie force output coil 1000 on slave device number 1 Query Message 01 05 00 63 FF 00 7C 24 Reply Message 01 05 00 63 FF 00 7C 24 Example 4 Display 16bit Unsigned Integer in 10mm Font uses Function 6 Display the 16bit value 12345 in 10mm high characters output register 208 on slave device number 1 Query Message 01 06 00 CF 30 39 6D E7 Reply Message 01 06 00 CF 30 39 6D FE Example 5 Read Pending Barcode reading uses Function 4 Read the result of the buffered barcode swipe input registers 3 to 18 on slave device number 1 Query Message 01 04 00 02 00 10 50 06 Reply Message 01 04 20 35 31 31 31 31 Note the barcode swiped was 51111125137 Example 6 Loopback Test uses Function 8 Diagnostic Code 0 Perform a simple loopback test with data FACE on slave device number 1 Query Message 01 08 00 00 FA CE 23 3F Reply Message 01 08 00 00 FA CE 23 3F Example 7 Preset Multiple Registers Place the message HELLO at the top left corner of the display output registers 10 to 12 of slave device number 1 Query Message 01 10 00 09 00 03 06 48 45 4C 4C AF 00 17 OF Reply Message 01 10 00 09 00 03 50 OA 161198 161198 Parts Ordering Codes IS Mercury 2e Terminal Non IS Mercury 2e IS Mercury 2e text only Non IS Mercury 2e te
60. xt only IS Interface Module Wiegand Card Reader Bar Code Interface Kit exc wand Bar Code Wand Part No R004 e IS R004 e GP R004 e TO IS R004 e TO GP R007 IS R005 CR R008 WO R008 WAND 90 More Information Other Spectra Tek Products Contact 91 Information on Spectra Tek products is available from the main Sales Office IS3000 Laser Scanner ISP3000 Laser Scanner Sentinel 500 Liquid Turbine Flowcomputer Gas Orifice Flowcomputer Bi directional Prover Autoload II integrated terminal automation system Pipeline Automation Systems Headquarters and Main Sales Office Daniel Europe Limited Swinton Grange Malton North Yorkshire YO17 6QR Tel 44 0 1653 695 551 Fax 44 0 1653 600 425 Email sales daniel co uk Far Fast Daniel Asia Pacific Pte Ltd Singapore Branch 171 Chin Swee Road 07 09 San Centre Singapore 169877 Tel 65 538 0498 Fax 65 538 6210 Email sales daniel com sg 161198 161198 Acknowledge mode Address field ASCII character codes Bar code system Baud rate Beep Bitmap downloading Block Buffer read Block transmission Box Draw Cable requirements Cable screen Card reader Characters standard Characters user definable Checksum Configuring setup Connection cable parameters Control characters Cursor control codes Digital Inputs DIN rail Escape sequences Function Handshaking controls Hexadecimal codes Keyboard disable Keyboard modes
61. yte field So if the destination terminal address is 1 then the field must contain 01 FUNC The FUNC byte is a D 44y for messages transmitted from the Mercury 2e terminal and R 524 for messages received by the Mercury 2e terminal In this example this byte must be R DATA A field of variable length this contains the message to be transmitted whether it is text or a control character string In this example the word TEST is being transmitted 161198 63 64 CSUM Read the Block Buffer To calculate the CSUM for the above example Take the Hex value of the Characters and add them all together The codes are listed on page 23 lt STX gt 024 ADDR 01 30 314 FUNC R 524 DATA TEST 54 45 53 54 DMY lt NUL gt 00 Sum of above codes 02 30 31 452 54445 53 54400 01F5y 01F5 in Hex 111110101 in Binary AND the above with 7F 1110101 Negate the above two s complement by inverting all bits and add 1 0001011 OB This value is less than 20 which is a control code and so the process needs to be repeated with DMY 20 This results in a new checksum having the value 6B which translates to the character k lt ETX gt The lt ETX gt character always ends a block and is sometimes known as the Control C character The terminal needs to receive the lt ETX gt character that has the value 03 To transmit the word TEST to the termina

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