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1. O Auto mode 1 Open mode 2 Closed mode The current mode of the setpoint can be retrieved by using the query spm The returned data is SP INIT MODE lt x gt lt mode string gt where lt x gt 0 1 or 2 and mode string gt AUTO OPEN Or CLOSED respectively Page 16 5 4 Comms commands a Serial baud rate bra The serial baud rate can be set using this command Any value can be entered as the parameter and the CCD decides on the actual baud rate using the following criteria Parameter value Actual baud rate lt 14400 9600 gt 14400 amp lt 28800 19200 gt 28800 57600 If the current comms used is serial then the CCD will give the usual response to the command at the current baud then change baud rate and give the lt address gt o0 response at the new baud rate Host front ends can therefore monitor for this to confirm that the baud rate has changed If this command is used with TCP comms then you will simply see the OK response twice as the CCD changes baud and confirms To retrieve the current baud use the query bra Returned data is BAUD lt baud rate gt b Serial comms protocol pro This command switches the serial comms protocols between RS232 amp RS485 The parameter passed should be one of the following O RS485 1 RS232 To retrieve the current protocol setting use the query pro Returned data2. RELAY lt x gt TRIP POINT lt trip point in engineering units gt Where lt x gt the relay number Page 20 b Relay hysteresis rih This command configures the hysteresis setting of the relay It takes two parameters the first if the relay in question the second is the percentage hysteresis represented as a percentage of full scale of the source channel with limits of 0 0 i e no hysteresis to 10 0 The current hysteresis setting can be retrieved using the query rlh The returned data is one line for each relay as follows RELAY lt x gt HYSTERESIS lt hysteresis percentage gt where lt x gt the relay number 5 8 Other commands a User input rezero irz To perform a user input rezero function use this command Typically the command takes no parameters to perform the function although it can take an optional parameter of 0 which clears any value already generated by a previous rezero To find the current user rezero value use the query irz The data returned is as follows REZERO lt rezero gt where lt rezero gt the current rezero value b Date of last factory calibration dlc This query is used to retrieve the date of the last factory calibration run The data is returned as follows LAST CAL DATE lt yymmdd gt where yy year mm month amp dd day E g 051201 means the last calibration run was
3. OPEN Or CLOSED respectively Page 15 e Setpoint source sps The setpoint source can be an internally set value or a percentage of the secondary CCD input known as slave input This source is set using this command and as with the other setpoint commands it takes just one parameter which isas follows O Internal source 1 Slave source For more information on setpoint sources see the Principles section 6 4 b The current source of the setpoint can be retrieved by using the query sps The returned data is SP SOURCE lt x gt lt source id gt where lt x gt 0 or 1 as above lt source id gt string identifier for lt x gt INTERNAL or SLAVE f Setpoint initial value siv The setpoint value set with the spv command above is not non volatile This command can be used to set an initial setpoint value on system startup It takes one parameter which is the initial setpoint value The current value of the setpoint can be retrieved using the query siv Returned data is SP INIT VAL lt initial setpoint value gt g Setpoint initial mode sim As with the value the setpoint mode set using the som command above is a volatile setting Again this command provides a way of setting an initial startup mode for the setpoint on power up of the CCD It takes one parameter which is a number between 0 amp 2 identifying the initial mode as follows
4. 1 December 2005 c Retrieve all settings ras As well as issuing some of the above commands as queries to retrieve individual settings this command has been provided which will return a comma separated list of most of the settings for the input channel setpoint etc The exact settings provided by this command are detailed in Table 3 in Appendix C Page 21 Section 6 Principles 6 1 Introduction This section describes the principles used in the CCD100 It details the various settings for the inputs and the outputs including setpoint control It does not detail any servicing or calibration procedures 6 2 Analogue Inputs The CCD100 has two analogue voltage input channels The main input can be configured to accept any input voltage from OV to a full scale of up to 10V This input is calibrated using a straight line fit method and then can be displayed on the CCD with an applied range The secondary input is used to accept an external command setpoint and has a non configurable full scale of 5V This input is used when the setpoint is set to slave source The main input channel has a number of associated setup parameters a Range Each device attached to the CCD will be outputting a voltage that represents some form of units and the range is used with the full scale to determine what the user sees on the screen for any input voltage b Full Scale Voltage Each device attached to the CCD will have a full scale voltag
5. 3 4 POWER CONNECTION SOCKET a aa rea a pa aa e a eaa aaa ne 4 35 PANEL MOUNTING cial iia e ea EEN aii cd 4 SECTION 4 FRONT PANEL OPERAT ION sesesssssoesssesssseosseseossosssseoesssosseseossesecseosssscoseseosseseossosesseossssosses 5 AL UNT EE 5 427 COMMONS WITCH FUNCTION Si dci iz 5 el MENJ Seen csi a adas 5 b Editable screens a A iaa 5 EJ Edr mode arrra dias 5 43 AHIMIBREAKDO WN A aci n 6 a Main Screen not changing setpoint oros 6 b Main Screen changing setpoint cccsccccceessssecessssseceessssecssscecsessseecsessssecsesssseeceesssseceessseceensseceeaaes 6 te WE BEE a aaa bata adas 7 d Comme MON Serenidad AA 7 eF SCTDOINE STEET iii eelere eege EARN 8 OI Apat STERN eege de EAN ee ee eege ed 8 9 FIECTING SCE ON EE 9 A Sendi Scree N EE 9 Li Relay Sireen EE 10 i TCP IP Menu Screen If TCP IP Comms are Factory Fitted cccceccccsssseessceessecesseeessececssceessseeensees 10 k IP Address Screen If TCP IP Comms are Factory Eirtedl canon non nos 11 I Subnet Mask Screen If TCP IP Comms are Factory Eittedl 11 m Factory Defaults Confirmation Screen 12 SECTION 5 SERIAL amp TCP COMMUNICATION cccssssccsseccnsscccsscccsscccsssccsseccnsscecsesecesseccaseeessssneseeeuesees 13 Bill INTRODUCTION tan ot 13 5 2 COMMAND QUERY FORMAT 13 Bid MAIN COMMANDS eege Ee A eege deeg 14 a Output current readings ri 14 b Output current readings repeatedly
6. Buffer Size 2 2 seconds Relay Trip Point for both relays if factory 10 0 fitted Relay Hysteresis for both relays if factory 2 0 fitted Page 27 8 3 Appendix C Table 3 Settings in ras command string Description Type and size Input channel units string 5 char string range 8 char string representation of a float full scale 8 char string representation of a float Setpoint value 8 char string representation of a float slave value 8 char string representation of a float mode 1 byte 0 2 as for spm query source 1 byte 0 1 as for sps query initial value 8 char string representation of a float initial slave value 8 char string representation of a float initial mode 1 byte 0 2 as for sim query Adaptive filter band 4 char string representation of a float size 1 byte 0 6 as for fls query Relay 1 trip point 8 char string representation of a float hysteresis value 4 char string representation of a float Relay 2 trip point if factory fitted 8 char string representation of a float hysteresis value if factory fitted 4 char string representation of a float Last factory calibration date 6 char string format as for dlc query Page 28
7. It can also be set to OFF which means that no filtering is performed i e every reading is a real one and can also be set to ON which means that filtering is always shown no matter how big of an excursion occurs b Filter size The size of the filter is currently configurable between O and 6 seconds and simply indicates the amount of readings that are taken and buffered to calculate and show the averaged reading A filter size of O will naturally turn of the filtering irrespective of the band setting It should be noted that this type of adaptive filtering can cause readings to be displayed abnormally particularly if the buffer size is one of the larger available settings where the displayed readings seem to jump about as the filter is disabled and then re enabled when the data excursions fall into the pre set band This is because outside of the band the display will show the real unfiltered readings whilst constantly taking an average in the background When the excursions fall into the band then the display will switch to showing the filtered data If this data is quite significantly slugged due to a large buffer size then the display will appear to nearly reach the new data value due to real values being shown and then jump back to the filtered data which could be several seconds behind Because of this the setting of a buffer size greater than 5 seconds will automatically change the band to ON mean
8. Socket The panel meter display requires a 24V 500mA supply to operate This must be a rectified and regulated direct currect supply capable of 15W recommended Although the CCD100 has an internal fuse and power supply overload shut down protection the supply to the CCD100 should be protected by fuse or other suitable electronic method A standard 5mm diameter dc power jack is required to connect to the CCD100 Connect the positive conductor to the center pin Connect the negative OV conductor to the outer of the jack If requested a compatible AC DC switch mode power supply will have been supplied with the unit Cautions Ensure correct power supply rating and polarity Do not use a partially assembled or faulty unit Incorrect use of this equipment or use in a manner not specified may impair the users protection 3 5 Panel Mounting A panel mount kit will have been supplied with the instrument This consists of 2 M3x6 screws 2 brackets 2 50mm screws Fit the M3x6 screws into the side of the unit into the diagonally opposed holes Do not tighten these screws to allow the bracket to slide over the screw head Thread locking adheasive may be used but is not required as these screws cannot rotate once the bracket is tightened Insert the meter into the panel A hole cut out of 92 x 45mm is recommended Slip the mounting bracket over the screwhead and tighten the 50mm screw The unit should now be secure Page 4
9. command tells the CCD to get the current reading of the input channel data and output to the comms If the input voltage of the channel is more than 15 over the full scale voltage set for the channel the lt reading gt below will be replaced with the over range error RANGE The readings output format is as follows with the channel data followed by a setpoint mode indication separated by a semi colon READ lt reading gt lt setpoint mode The lt setpoint mode gt is a single number that represents the current mode of the setpoint O Auto 1 Open 2 Closed This number is mainly included for use with Chell s front end software CCD X and is mainly useful when outputting repeated readings where it effectively provides a constant update of the current mode of the setpoint Page 14 b Output current readings repeatedly rp The CCD is also able to report the current readings repeatedly at a given interval This command starts and stops this repeat activity by setting the parameter accordingly O Repeat off 1 Repeat every 100ms not allowed if using serial comms baud lt 57600 2 Repeat every 500ms not allowed if using serial comms baud lt 57600 3 Repeat every second 4 Repeat every minute The timing commences from the point at which the rp command is entered Use this command with care on a RS485 multidrop network f is recommended NOTE for 100ms repeat readings The data out
10. it may be returned to Chell Intruments Ltd to be reused or recycled in accordance with the legislation Please contact Chell Instruments Ltd for full details Terms and conditions apply Page 25 Section 8 Appendices 8 1 Appendix A Table 1 CCD100 Command Set Summary Purpose Cmd Query Parameters Notes Output current r readings Output current rp 0 4 P1 O Repeat off readings repeatedly 1 Repeat every 100ms 2 Repeat every 500ms 3 Repeat every second 4 Repeat every minute 1 amp 2 not allowed when using serial comms at baud lt 57600 Setpoint value spv spv P1 Real value to set Setpoint mode spm spm 0 2 P1 0 Auto mode 1 Open mode 2 Closed mode Setpoint source sps sps 0 1 P1 0 Internal source 1 Slave External source Setpoint initial value siv siv P1 Real value to set Setpoint initial mode sim sim 0 2 P1 0 Auto mode 1 Open mode 2 Closed mode Retrieve all settings ras Comma separated string returned See Table 3 for actual settings Serial baud rate bra bra 9600 57600 lt 14400 9600 gt 14400 amp lt 28800 19200 gt 28800 gt 57600 Serial protocol pro pro 0 1 P1 0 RS485 1 RS232 Comms address add add a h Ethernet IP address eip eip IP octets P1 XXX XXX XXX XXX Ethernet subnet mask esm esm IP octets P1 XXX XXX XXX XXX Input channel units str uiu uiu CCC
11. screen allows you to set the trip point for when the relay switches The relay also contains some hysteresis to stop it chattering This is configurable from this screen as well and is represented as a percentage of full scale of the input channel with limits of 0 0 i e no hysteresis to 10 0 If the second relay option is factory fitted then the above fields are duplicated for the second relay and are changed to Trip 1 Hyst 1 amp Trip 2 Hyst 2 as appropriate Switch Functions Func Go back to Main Menu screen lt Select previous character when in edit mode gt Select next character when in edit mode A Move edit field selection up y Move edit field selection down Zero Go to edit mode for currently selected field TCP IP Menu Screen If TCP IP Comms are Factory Fitted IP Addr gt lt lt Sub Mask Due to limited space on the display the TCP IP configuration options have to be place under separate menu selections as shown here This menu provides a path to change the IP address and Subnet mask in their appropriate screens shown below Switch Functions Func Go back to Comms Menu screen lt Go to previous menu selection gt Go to next menu selection A No function y No function Zero Go to screen associated with menu selection Page 10 k IP Address Screen If TCP IP Comms are Factory Fitted 1 Addre Toz 168 001 180 This screen provides editing of the IP address for TCP communication
12. 4 1 Section 4 Front Panel Operation Introduction The front panel consists of a 112x16 dot matrix VFD display with 6 membrane key switches below it Each switch has legends on and above or below it to indicate its function under different conditions although there are certain common functions to each screen as detailed below For the purpose of the following sub sections the switches shall be referred to using the legends on the buttons 4 2 Common Switch Functions The switches on certain types of screens and in certain modes have the same functionality as detailed here a b c Menu screens On all menu screens the a amp gt switches are used to navigate through the menu options The Func switch is used to go back to the parent menu except on the Main Menu screen where it goes back to the main screen The Zero switch doubles up as an Enter switch and this actions the chosen menu selection This may be to go to a sub menu or to an editable or information screen see HMI breakdown for more details Editable screens On any screen that has editable fields switches A amp W move the selection between the possible editable fields Func goes back to the parent screen which is usually the menu that was used to get to the screen in question Zero activates edit mode see below Edit mode When in edit mode the edit cursor appears on the first character in the editable fi
13. CC P1 Max length 5 chars Input channel range uir uir P1 Real value for range to set Input channel full scale uif uif P1 Real value for full scale to set Adaptive filter band flb flo P1 Band percentage 0 01 1 00 or OFF or ON Adaptive filter size fls fls 0 6 P1 Buffer size in seconds Relay switch threshold rlt rit 1 2 P1 Relay number P2 Real number for switching point Relay hysteresis rih rih 1 2 0 0 10 0 P1 Relay number P2 Hysteresis percentage value User input rezero irz irz 0 P1 optional clears current user function input rezero setting Date of last calibration dlc Returned date format yymmdd Page 26 8 2 Appendix B Table 2 Factory Defaults Setting Default Value Additional Information Repeat Rate for output readings 0 Repeat off Serial Comms Baud 57600 Serial Comms Protocol il RS232 Comms Address a Ethernet IP Address if factory fitted 192 168 1 180 Ethernet Subnet Mask if factory fitted 2909255 e299 0 Input Channel Units String No units strings set Input Channel Range 0 00 Input Channel Full Scale 10 000 Input Channel Display Precision 2 2 decimal places Input Channel User Rezero 0 0 No rezero set Setpoint Value 0 0 Setpoint Slave Value 0 0 Setpoint Source 0 Internal source Setpoint Mode 0 Auto mode Date of Last Factory Calibration 010101 Adaptive Filter Band 0 2 Adaptive Filter
14. Change setpoint value main screen changes as below A override mode Change setpoint mode to OPEN vy Change setpoint value main screen changes as below Vv override mode Change setpoint mode to CLOSE Zero Perform input rezero if held for 3 seconds x By default the Func switch does nothing but special builds of the CCD100 may include functionality for this switch In such cases an addendum to this manual will indicate the function Main Screen changing setpoint 10 000 mBar I SP 1 000 CLOSE The other form of main screen is shown when changing the live setpoint via an initial press of the A or Y switches All the information shown on the first main screen is shown here albeit some items are resized or repositioned but in addition the current setpoint value is also shown Note that this screen is not permanent if the A or Y switches are not pressed at all for 5 seconds then the main screen reverts to the first variety shown previously Switch Functions Func No function above lt Go to Main Menu screen gt Enable setpoint mode override active for 2 seconds override mode Change setpoint mode to AUTO A Change setpoint value hold for continuous change A override mode Change setpoint mode to OPEN v Change setpoint value hold for continuous change Vv override mode Change setpoint mode to CLOSE Zero Perform input rezero if held for 3 seconds Page 6 c Main Menu Scree
15. Chell Instruments Ltd Folgate House Folgate Road North Walsham Norfolk NR28 OAJ ENGLAND Chell Tel 01692 500555 Fax 01692 500088 Chell Configurable Display CCD100 OPERATING MANUAL e mail info chell co uk Visit the Chell website at http www chell co uk 900138 1 3 Please read this manual carefully before using the instrument Use of this equipment in a manner not specified in this manual may impair the user s protection Chell Document No 900138 Issue 1 3 ECO 0579 Date 19 August 2009 Chell s policy of continuously updating and improving products means that this manual may contain minor differences in specification components and circuit design from the actual instrument supplied SECTION 1 INSTRUMENT OVERVIEW cccccsssssesssssesesesesescscsssssesesesesesesesesesssesesesseeseseeseseessesesesesesesesesesess 1 SECTION 2 SPECIFICATION WEE 2 21 e 2 2 2 OPERATING CONDITIONS cecilia 2 2 3 MEASUREMENT AND QUIPUTS tege a a a ii 2 SECTION 3 INSTALLATION AND INTERCONNECTIONG sccssccssccsscsssscssccssccsscessessscssccsssesscesssnsssescseesoes 3 3 1 TRANSDUCER SOCKET PINOUT 15 WAY D Tpt nn nano nc rn nn nr nn nn anna nana cana nennnnss 3 3 2 INTERFACE SOCKET PINOUT MINIATURE 15 WAY IDi Tvet nono ono onononononnnn encon ano nnann narran nono 3 3 3 SERIAL INTERFACE SOCKET PINOUT 9 WAY D TYPE csccesssesssessceseceseecsaecsaeceaeceaecaecscaeseaeceaeseeesseesseeesaaessaeenaees 4
16. IP is factory fitted This command changes the Subnet mask used as part of the TCP IP communication As with the IP address the parameter should be entered as a standard 4 octet mask e g 255 255 255 0 Each octet value is again capped if a value greater than 255 is entered The CCD will respond and the display the following before auto restarting the system as with the IP address UNIT SHOULD AUTO RESTARTJ IF NOT RESTART TO APPLY CHANGES The current subnet mask can be retrieved using the query esm The returned data is SUBNET MASK lt XXX gt lt XXX gt lt XXX gt lt XXX gt where lt xxx gt is always a three digit octet Page 18 5 5 Channel Setup commands a Input channel units string uiu The input channel has an associated free form text field that can be used to identify the units being used This command is used to set this and its only parameter is a max of 5 characters for the units string The current units string can be retrieved using the query uiu The data returned is as follows INPUT UNITS STR lt units gt where lt units gt the exact units string as displayed on the front panel b Input channel range uir Use this command to set the range of the input channel The single parameter is the actual value for the range The number of decimal places passed in the range value dictates the number of decimal places shown for the main data out
17. Limits of 10 8V dc into 10 kOhm or greater 0 1 of reading 0 01 full scale 0 5 V de Close lt 0 2 V Open gt 6 0 V Page 2 Section 3 Installation and Interconnections The instrument is designed to be panel mounted and is a standard 96x48mm panel meter enclosure Note that the instrument must always be situated in such a way as to enable adequate air circulation about the unit If a transducer was supplied with the CCD100 a suitable cable may have been included 3 1 Transducer socket Pinout 15 Way D Type 6 219 Supply 8 Command Output V If the transducer is being powered from another source e g a mains powered supply it will only be necessary to connect to the two signal pins Note The CCD100 has a fully floating differential input For single ended use i e tranducers with differential output join OV pin5 amp Signal Return pin12 at the transducer Ensure the common mode input range is not exceded 3 2 Interface Socket Pinout Miniature 15 Way D Type A Analogue Output 2 Leien 2 Com _ factory fit option Page 3 3 3 Serial Interface Socket Pinout 9 Way D Type RS485 Tx ES RS232 Tx RS485 Tx 5d 6 CRSA RX O 8 JN JL Common ______ 1 For RS232 only connect only the pins designated in bold font For RS485 only connect only the pins designated in normal font The serial protocol must be specified using the HMI see later 3 4 Power Connection
18. dary input channel as mentioned 6 2 in above 6 5 User Rezero Over time it is possible that the input may drift slightly due to various conditions temperature changes etc As such it may be necessary for the channel to be rezeroed by the user The user rezero function is provided for this task It simply takes the current reading sampled and averaged over 3 seconds and uses that as an additional offset for the channel in question subtracting the value from all subsequent readings Ensure any process value to be zeroed is in fact truly zero before performing this function This would mean isolating flow devices or fully pumping a pressure device Note that the user rezero via comms also provides the facility for clearing any user rezero value that may have already been set This should be used before any input calibration is performed to ensure that the calculated calibration points are not distorted by the user zero offset Page 23 6 6 Adaptive Filtering The CCD100 includes an adaptive averaging filter on the display and comms readings output to aid in smoothing out unwanted noise on the displayed readings a Operational band The filter can be configured to only operate within a certain band meaning that excursions between subsequent readings that fall outside that band are shown as real and not filtered readings The band is configurable between 0 01 and 1 00 of the full scale range of the input channel
19. dings The band is represented as a percentage of FS and can be set between 0 00 OFF and 1 00 and also to ON The buffer size allows settings between 0 and 6 seconds of filtering For more information on the adaptive filter see the Principles section 6 6 Switch Functions Func Go back to Main Menu screen lt Select previous character when in edit mode gt Select next character when in edit mode A Move edit field selection up y Move edit field selection down Zero Go to edit mode for currently selected field Serial Screen Baud 57600 Addr a The main configuration item on the serial screen allows you to select the baud rate of the CCD100 for serial communication The allowed baud rates are 9600 19200 amp 57600 There is also an address field that is mainly used for identifying a particular unit if several are connected together on an RS485 network All commands sent to the unit must be prefixed with the address letter see section 5 2 for more information Valid letters are a to h The other editable field is used to tell the CCD100 whether it is on an RS485 serial network Switch Functions Func Go back to Comms Menu screen lt Select previous character when in edit mode gt Select next character when in edit mode A Move edit field selection up y Move edit field selection down Zero Go to edit mode for currently selected field Page 9 i Relay Screen i Trip Pt 5 000 Hvst 2 0 This
20. dseedestansseesscbecdes ese cnds sts nabs siedesss ee sdacedenssaessensensteseeee 22 6 1 INTRODUCTION srra eien ere eege Ee decke 22 6 2 ANALOGUE INPUTS tege A ee ed doen Se aie he 22 A Range EE 22 b Full Scale VOILA GE COPAN O OO deeg seg Seed Ee EE gd wuts get ed 22 tel Units SUNO EE ER 6 3 ANALOGUE QUTPUTS er Eege ege beer Ee Eech Een 22 6 4 SETPOINT CONTRO A its 23 1 SETPOINT Mode cities 23 El SOTDONESOU A dido 23 Bb USER REZERO A A at ee eed A 23 6 67 ADAPTIVE FILTERING 240 da 24 0 Operational DOING EE 24 lu CEMSA A ee eene 24 SECTION 7 SERVICE AND CALIBRATION ccssscosscssscssscssscssssssscssccsscessessccsscesscesscnssensssesssusssnssonseesees 25 Pd SERVICE A EE 25 72 CALIBRA TON Seo ek EE ee ege oars 25 TS ADIUSTIMENT Ee Ae ET a ee et hh EE ee TE 25 Pie AGUEANING Eeer EE Eeer ee ees 25 7S 2END OF LIFE fcc thin nls Gee asi EE Ain Sea dE olin Sad ences 25 SECTION 8 APPENDICES io ceccccieciscessocsssesiednssessastuencdacceces cass EE EEN EEN EEN EEN ENNEN 26 8 1 APPENDIX EE 26 8 2 APPENDIX EE 27 ee 28 TABLES Table 1 CCD100 Command Set Summary c ccconnnccncccccncncnnnnnnnnanancnnnonononnnnnannn cnn rre 26 Table 2 Factory Delault Si icon nininini 27 Table 3 Settings in ras command StriNQ cooonncnnnnncncnonnnnnnnnnanacnncnononennnnnnnncccrrrr ren 28 Section 1 Instrument Overview The CCD100 is a multi featured process display controller capable of in
21. e which is the maximum voltage the device should output under normal operating conditions Typical values are 10V 5V and 1V The full scale is used with the range to determine what the user sees on the screen for any input voltage The CCD will show the over range error RANGE for any channel whose voltage input is more than 15 over the full scale voltage set for that channel c Units String To inform the user of what units are being dealt with each channel has an associated units string This is a free form text field maximum 5 characters that is displayed on the right side of the Main screen Example A device has a full scale voltage of 10V and a range of 100 mbar If the device now outputs 10V the CCD100 display will nominally show 100 pending input calibration If the device outputs 5V the CCD100 will show 50 and so on 6 3 Analogue Outputs There are two analogue outputs on the CCD100 both voltage outputs One is for setpoint control with its own set of setup parameters see next section and the other is a simple retransmission of the main input voltage and has no user setup control Typically this output can be used for data logging purposes or for providing an external setpoint control to another CCD or similar instrument Page 22 6 4 Setpoint Control As mentioned above there is one analogue output that is used for command setpoint control that can be used to operate a mass flow controller or similar The setp
22. eld the cursor is a horizontal bar below the character being edited If the field is bigger than 1 character then switches a amp gt are used to move left and right across the field If the field is only one character e g a Yes No selection or has a rolling selection e g for selection of a percentage then a amp gt do nothing Switches A SV are used to change the character being edited within the valid range field position dependant Func cancels edit mode and returns the field to it s previous value Zero accepts any changes to the field and also comes out of edit mode Page 5 4 3 HMI breakdown Here follows a complete breakdown of all CCD100 screens a b Main Screen not changing setpoint 10 000msar The main screen comes in two forms The first shows the main channel input data with range full scale and calibration applied and the associated units string If an input is over range more than 15 above full scale voltage then the data value is replaced with the over range error RANGE This screen also shows the current mode of the setpoint if not in AUTO i e OPEN or CLOSE If either of the relays have been tripped then they are also indicated as such on the far right of the screen Switch Functions Func No function lt Go to Main Menu screen gt Enable setpoint mode override active for 2 seconds override mode Change setpoint mode to AUTO A
23. he percentage sign appears next to the SP value For more information on the command setpoint see the Principles section 6 4 Switch Functions Func Go back to Main Menu screen lt Select previous character when in edit mode gt Select next character when in edit mode A Move edit field selection up y Move edit field selection down Zero Go to edit mode for currently selected field Input Screen Range 10 000 FS 10 000 y This screen allows you to change the input channel range and full scale voltage see the Principles section 6 2 for more information on this and also assign a units label up to 5 characters for the channel data The number of decimal places selected on the range field dictates the number of decimal places shown for the input channel data on the Main screen To reduce the number of decimal places change the number under the edit cursor to a decimal point and the system will auto format the field when Zero is pressed Switch Functions Func Go back to Main Menu screen lt Select previous character when in edit mode gt Select next character when in edit mode A Move edit field selection up v Move edit field selection down Zero Go to edit mode for currently selected field Page 8 g Filtering Screen h Band 0 10 Size 0 sec This screen allows the user to modify the band and buffer size of the adaptive filter The filter only applies to the display and comms output rea
24. ing that filtered data will always be shown Selecting different filter band size combinations will reduce these anomalies turning the band OFF and ON will stop this anomaly Page 24 7 1 7 2 7 3 7 4 Section 7 Service and Calibration Service There are no user serviceable parts inside the instruments Should any difficulties be encountered in the use of the CCD100 it is recommended that you contact Chell Instruments Ltd for advice and instructions Calibration There is no user calibration for the CCD100 It is recommended that the instrument be returned annually to Chell Instruments Ltd for a factory calibration This will ensure optimum performance throughout the life of the product Adjustment There are no user adjustments in the instrument indeed the presence of lethal voltages within the instrument means that the user is strictly forbidden from removing the covers without invalidating Chell s obligations under both Warranty and COSSH Cleaning A dirty instrument may be wiped clean with a soft cloth that has been sprayed with a proprietary foaming cleaner then wiped dry immediately A Under no circumstances should the instrument be wetted 7 5 directly or left damp End of Life Chell Instruments Ltd complies with the WEEE legislation and is registered as a manufacturer and importer of Electrical and Electronic Equipment Once this equipment reaches its end of life or is no longer required
25. is PROTOCOL lt protocol gt where lt protocol gt 0 or 1 as above c Comms address add As mentioned previously Section 5 2 all commands are prefixed with an address letter This command allows you to change that address Valid addresses are a h When the CCD replies to the command the first line will contain the old address and the response line will contain the new address All subsequent comms must use the new address The current comms address can be obtained using the query add The returned data is ADDR lt address gt Page 17 d Ethernet IP address eip only available if TCP IP is factory fitted This command changes the IP address used to communicate over TCP IP comms The parameter should be entered as a standard 4 octet IP address e g 192 168 1 180 The max octet value is obviously 255 If a greater value is entered that value will be capped to 255 Once the CCD has responded to the command it will display the following and auto restart the system UNIT SHOULD AUTO RESTART IF NOT RESTART TO APPLY CHANGES This is necessary to re initialise the internal TCP socket with the newly set IP address To retrieve the current IP address use the query eip The returned data is IP ADDRESS lt XXX gt lt XXX gt lt XXX gt lt XXX gt where lt xxx gt is always a three digit octet e Ethernet subnet mask esm only available if TCP
26. is see the Principles section 6 6 To retrieve the current filter band use the query flb The returned data is FILTERING BAND lt band gt b Filter size fls Use this command to set the size of the adaptive filtering buffer The one parameter this command takes is the buffer size in seconds between 0 and 6 seconds 0 can be used to effectively turn the adaptive filtering off To retrieve the current filter size use the query fls The returned data is FILTERING SIZE lt X gt sec where lt x gt number of seconds of filtering Note if current size is O then returned data is FILTERING SIZE 0 NO FILTER 5 7 Relay control commands a Relay trip point ri This command sets the point at which the relay switches from one state to the other When the source data is below this point then the relay is closed so therefore when the source data rises above this point then the relay is open The command takes two parameters the first is the relay whose trip point is to be set 1 2 and the second is the trip point in engineering units as configured with the Input Channel range command see 5 5 b Note that the first parameter is always required even if the second relay has not been factory fitted The current trip point values can be retrieved using the query rlt The returned data is one line for each relay as follows
27. mp 15 Cl Setpoint value ep 15 d Setpoint mode epnm siTe enen EAEE EEEE EAEE EEEE EAE EN 15 e Setpoint source eps 16 f Setpoint initial value Zeil 16 g Setpoint initial mode SIN eeccccccecsscccessssceceesssceceesssceceessecceesseseceesseseceesseseceessseseceesseseceesaesenssasseeeeas 16 5 4 COMAS COMMANDOS ii 17 a Serial baud rate Dra auena AE da ita 17 b Serial COMMS protocol pro 17 EJ 0 081 Ee EN 2 2 RE 17 d Ethernet IP address eip only available if TCP IP is factory Dttedl 18 e Ethernet subnet mask esm only available if TCP IP is factory fitted ccccccscccessseeseceesseeerseee 18 5 5 CHANNEL SETUP COMMANDS siisi 2 03 scesdececsoucdentencedvstesshevvscauslcvvectssdeaceusedevsstesivontuctsduetecdhesskeadeadherecceetesesssh 19 a Input channel units string ui 19 b Input channel range ui 19 c Input channel full scale wf 19 567 FILTERING COMMANDS viciado 20 0 FILER DGNG FID A A 20 BY ie Eiter leg Ts A IE Bhd BRR OE RAN Cd OE 20 5 7 RELAY CONTROL COMMANDS isror titties Eege A a a tia 20 el Relay TOPOM EAT E eana ler EES 20 DJ Relay Nysteresis N riaa aa a E dd 21 5 8 OTHER COMMANDS seie a a dete ci i A Eege 21 el SUSCrINDUETEZELO DEE AE Een he a te 21 b Date of last factory Calibration degt 21 l ET Ei CN d E 21 SECTION 6 PRINCIPLES a nseni sicsiesiicecsuns tis sdnccenscenscses
28. n d Setpoint gt Leer 4 Filtering gt Les le Les le 4 T PSN eer The Main Menu screen provides a path to select screens that are used for the configuration of the CCD100 the setpoint value mode source input range full scale units string comms display filtering and relays can all be configured from screens selected via the main menu It is also possible to reset settings to their factory defaults from the Main Menu screen Only one option is shown at any one time in the order shown above Switch Functions Func Go back to Main screen lt Go to previous menu selection gt Go to next menu selection A No function y No function Zero Go to screen associated with menu selection Comms Menu Screen The Comms Menu screen provides options for setting the Serial comms baud rate address RS232 RS485 protocol If TCP IP comms are factory fitted then this screen also provides a path to change associated parameters IP address Subnet mask Switch Functions Func Go back to Main Menu screen lt Go to previous menu selection gt Go to next menu selection A No function y No function Zero Go to screen associated with menu selection Page 7 e Setpoint Screen f SP Val 1 000 Mode AUTO From the setpoint screen you can edit the value of the command setpoint as well as change the mode AUTO OPEN CLOSED and the source INTERNAL SLAVE If SLAVE is selected then t
29. n Zero is pressed gt No function A No function y No function Zero Starts factory default if lt is held as well Page 12 Section 5 Serial amp TCP Communication 5 1 Introduction The CCD100 allows full control and feedback via serial communications protocols RS232 or RS485 If factory fitted communications is also possible via TCP IP All controls via the HMI are also available via comms and all calibration is also performed via comms commands Serial comms is available using an RS232 or RS485 link between the client typically a PC and the CCD A baud rate must be configured along with the selection of protocol Valid baud rates are 9600 19200 amp 57600 Additional comms setup parameters e g parity stop bits etc are always the same and non configurable By default the CCD is setup to communicate via RS232 with the following comms parameters Baud 57600 Data bits 8 Parity None Stop bits 1 Handshaking None TCP IP comms requires an IP address and subnet mask to be configured for the CCD This can be set via the HMI or via serial comms Note that on changing the IP address or subnet mask the CCD must be re initialised by performing a system reset This is done automatically if setting from comms the CCD waits a second and then resets itself but if setting from the HMI you must power off amp on for the new TCP IP settings to come into effect 5 2 Command Query format The format of the commands and q
30. oint command output always has a voltage full scale of 5V Example If the input channel is setup for a 100 slpm 5V full scale device and the setpoint value is 10 0 assuming setpoint is in Auto mode and not a slave source then the output voltage of the setpoint would be 0 5V The setpoint does have some configuration parameters that can be used to alter the function of the setpoint control and they are detailed as follows a Setpoint Mode The setpoint can be configured in one of three modes Auto Open and Closed e In Auto mode the setpoint output is dependant on the setpoint source and value settings see below e In Open mode the setpoint outputs a voltage greater than the full scale of the device Given that the setpoint command full scale is 5V the output in this mode is 7V e In Closed mode the setpoint outputs a voltage less than the minimum output voltage of most devices the setpoint output voltage is 0 25V b Setpoint Source The setpoint source dictates where the setpoint value comes from assuming the mode is set to Auto see above This can be one of two possibilities Internal or Slave e Internal source the setpoint uses the value set internally via the a amp e switches or via the externals comms e Slave source in this case the setpoint uses a percentage of an externally produced value The percentage is set via the a 8 Y switches and the external value comes from the secon
31. port the CCD will reply by informing the user of the command query it has just received along with any parameters identified any data requested if it was a valid command query and a line indicating whether the command was accepted This reply block is the same for anything sent to the CCD and is as follows indicates a carriage return line feed pair For a command For a query lt a gt lt cmd gt lt params gt lt a gt lt cmd gt lt params gt lt a gt lt response gt lt data gt lt a gt lt response gt J where lt a gt is the address letter lt cmd gt is the command query query identified by a after the three chars lt params gt is the comma separated parameter list if any lt response gt is the acceptance indicator lt data gt is the data requested if a query was sent Note the data usually consists of some identification string in CAPS followed by a colon and then the actual data Some queries return multiple lines of information See individual commands for details as appropriate The acceptance indicator is a single character as follows e o OK if the command query was recognised and accepted e b BADCMD if the command query was not recognised or has incorrect invalid parameters e e ERROR if there was some internal comms error e w BUSY if the comms is currently busy 5 3 Main commands a Output current readings r This
32. put up to a max of 4 decimal places any more will get chopped off The current range of the input channel is retrieved using the query uir The data returned is as follows INPUT RANGE lt range gt Where lt range gt the range ofthe channel engineering units c Input channel full scale uif This command is used to set the full scale voltage for the input channel The single parameter is the actual full scale value The full scale voltage setting for the input channel is retrieved using the query uif The data returned is as follows INPUT FULLSCALE lt fs gt Where lt fs gt the full scale voltage of the channel For more information on the use of input range and full scale see the Principles section 6 2 Page 19 5 6 Filtering commands a Filter band flb This command is used to set the point at which the adaptive filtering kicks in It takes one parameter which is the percentage of full scale of the input Valid values are between 0 01 and 1 00 Additionally the parameter can be OFF which will mean the filtering will never kick in or ON which means the filtering is always used Note that if the filter size is set to greater than 5 seconds the filter band command will return a Bad Command acknowledgement because the filter is always on in this situation and it therefore makes no sense to attempt to change the band setting For more information on th
33. put is effectively lots of small data packets On TCP networks this can cause problems when communicating with front end software running on MS Windows It has been found that the Winsock control commonly used in TCP comms development on Windows does not handle lots of small data packets very well coming in at speeds of around 10Hz or faster As such it has been decided that when 100ms repeated output is used the data will be taken every 100ms and buffered up to be sent out every 500ms in blocks of 5 readings This has proven to be a more robust output method For consistency the output from serial comms also works in the same way c Setpoint value spv This command is used to set the value of the command setpoint The command takes one parameter which is the actual value to set The current value of the setpoint can be retrieved using the query spv Returned data is SP VALUE lt setpoint value gt d Setpoint mode spm This command sets the mode for the command setpoint The command takes one parameter which is a number between 0 amp 2 identifying the mode as follows 0 Auto mode 1 Open mode 2 Closed mode For more information on setpoint modes see the Principles section 6 4 a The current mode of the setpoint can be retrieved by using the query spm The returned data is SP MODE lt x gt lt mode string gt Where lt x gt 0 1 or 2 and lt mode string gt AUTO
34. s Although any number can be cycled to during edit mode the CCD100 will cap a particular octet at 255 if necessary when Zero is pressed to accept the changes Switch Functions Func Go back to TCP IP Menu screen lt Select previous character when in edit mode gt Select next character when in edit mode A No function if not in edit mode y No function if not in edit mode Zero Go to edit mode for currently selected field Subnet Mask Screen If TCP IP Comms are Factory Fitted Subnet Mask 255 255 255 000 This screen provides editing of the Subnet mask for TCP communications As with the IP address above the CCD100 will cap a particular octet at 255 if necessary when Zero is pressed to accept the changes Switch Functions Func Go back to TCP IP Menu screen lt Select previous character when in edit mode gt Select next character when in edit mode A No function if not in edit mode y No function if not in edit mode Zero Go to edit mode for currently selected field Page 11 m Factory Defaults Confirmation Screen Hold Menu amp Hit Enter to Confirm If Factory Defaults is selected from the Main Menu this screen appears to ask for confirmation of the requested function If confirmed then the screen changes to show a percentage of completion of the factory defaults and once completed the CCD100 will restart Switch Functions Func Go back to Main Menu screen lt If held starts factory default whe
35. terfacing directly to a mass flowmeter or other process transducers The CCD100 is a single channel unit which can be used to operate a flow controller or display the output from a pressure transducer There is also a secondary channel which can be used for external command setpoint control 5v full scale The CCD100 also has the ability to power such devices with either 15dc 250mA or 24vdc Y 300mA Interfaces to the CCD100 include RS485 RS232 Ethernet optional extra or it can be used with just analogue signals Note This manual has been written for firmware version 1 00 Page 1 2 1 2 2 2 3 Section 2 Specification Power Supply Line voltage Consumption Protection Operating conditions Operating temperature range Storage temperature range Maximum Relative humidity Warm up time to full accuracy Measurement and Outputs Power supply out DC input signal Input impedance DC output Output accuracy after zero Setpoint Command Output 24V DC 5 less than 500mA Internal resettable fuse 5 C to 50 C 40 F to 122 F 20 C to 70 C 40 F to 158 F 95 at 50 C non condensing 15 minutes assumes unit already stabilised at ambient and excludes transducer warm up time 15V dc 250mA max 24V dc 300mA max Use 15V or 24V transducer excitation Do Not Use Both 0 10 0V dc guaranteed limits are 10 8V to 10 8V gt 500 kOhm Retransmission of Input
36. ueries is common between all available comms protocols for ease of use and understanding when switching between comms methods Format accc pl pl pl 4 where a address ccc command query query identification p parameter Separated by commas if more than one The first letter to be entered on the command line before any command or query is the address identifier This is a letter between a amp h and is particularly important when communicating via RS485 if there are several units on the same RS485 network On RS232 and TCP IP this address doesn t really mean anything because RS232 is single point to point comms and TCP IP uses an IP address per unit for identification However as mentioned above the address letter is left in and therefore required for ease of use between comms methods By default the CCD has the letter a for its address Most commands are identified by three letters although this is not always the case anda query is identified by following the command letters with a character For all commands with parameters you must separate the command from its parameters with a space and separate multiple parameters with commas Page 13 Table 1 in Appendix A summarises all commands and queries available Note that where a command is also a query you do not enter any parameters for the query version unless explicitly stated in the table For everything sent on the comms
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