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(b) because only the remainder is of interest, the right-most (most

significant) bit can be discarded.

Thus, the polynomial has the value Hex A001. The CRC algorithm is shown in Figure

4-1.

O075-4

4-3

PM-0075

Figure 4-1

Cyclic Redundancy Check Algorithm

Содержание 1/16-DIN

Страница 1: ...1 8 DIN 1 16 DIN PLASTICS CONTROLLERS Product Manual...

Страница 2: ...ollers In normal operation all actions taken by the user are to be in front of the front panel Volume 2 This supports the installation commissioning and configuring of the 1 8 DIN and 1 16 DIN Plastic...

Страница 3: ...nically competent servicing personnel This is covered in Volume 2 of this manual Contents Volume 1 1 INTRODUCTION 1 1 1 1 TAILORING THE CONTROLLER TO SUIT YOUR NEEDS 1 2 1 2 HOW IT WORKS 1 3 2 OPERATO...

Страница 4: ...SET UP MODE PARAMETERS 3 2 3 3 OPERATOR MODE DISPLAYS 3 17 3 4 TUNING THE CONTROLLER MANUALLY 3 18 3 5 SELF TUNE 3 19 3 6 EXIT FROM SET UP MODE 3 20 4 MODBUS RTU COMMUNICATIONS 4 1 4 1 COMMUNICATIONS...

Страница 5: ...rectifier stacks Also supports standard four wire connection via a separate current transformer Heater Break alarms high low and short circuit to cater for most requirements Unique Quick Transfer for...

Страница 6: ...THE CONTROLLER TO SUIT YOUR NEEDS The Controller has three modes in which adjustments can be made via the front panel keys Configuration Mode This is normally used only when the Controller is first c...

Страница 7: ...verage power very accurately thereby ensuring smooth and accurate control of the process This method of controlling output power is very common and is known as time proportioning An adjustable Cycle T...

Страница 8: ...arn if the process variable temperature moves outside prescribed limits These alarms can be set to react if the process variable goes above or below specific temperatures or moves too far away from th...

Страница 9: ...ING THE PARAMETER TO BE DISPLAYED ADJUSTED After the Controller has performed its power up self test the initial displays appear The Scroll key may then be used to step through the available displays...

Страница 10: ...ustable if Setpoint Strategy 2 Active setpoint is one of Setpoint Setpoint 1 Setpoint 2 or Soft Start Setpoint as appropriate 2 Appears only if setpoint ramping is enabled and ramp rate is in the rang...

Страница 11: ...to high speed mode 2 4 SOFT START Soft Start is used when a gentle start up phase is required before going to full working temperature During Soft Start a dedicated setpoint is used to control the pro...

Страница 12: ...t any moment may be read from the front panel 2 5 INDICATION OF AN ALARM GOING ACTIVE If any of the Heater Break Alarms High Low or Short Circuit Alarm 1 or Alarm 2 goes active the HB AL indicator wil...

Страница 13: ...ey Usage Set Up parameter Press the AM key to switch between manual control and automatic control In manual control the output power is displayed and may be adjusted The SET indicator flashing pattern...

Страница 14: ...l heater current display will be restored as soon as the Soft Start time has expired 2 13 QUICK TRANSFER OF HEATER CURRENT TO NOMINAL VALUE The nominal value of the heater current is manually adjustab...

Страница 15: ...tor will flash whilst Pre Tune is operating To dis engage Pre Tune repeat this procedure the AT indicator will go OFF 2 15 SELF TUNE To optimise tuning whilst the Controller is operating activate Self...

Страница 16: ...ode display after 30 seconds The Hardware Definition Code has the following significance 2 8 O075 2 PM 0075 Value 0 1 2 3 4 5 7 8 9 Input RTD Input Thermo couple Input Output 1 Relay Output SSR Drive...

Страница 17: ...N parameters are at their default values possibly due to a change in Controller configuration To cancel this indication adjust any Set Up Mode parameter see below It is recommended that all configurat...

Страница 18: ...ortional Band 2 14 0 0 to 999 9 of input span 10 0 Reset Integral Time Constant 1 1s to 99m 59s and OFF 5m 00s Rate Derivative Time Constant 1 00s to 99m 59s 1m 15s Overlap Deadband 1 4 20 to 20 of Pr...

Страница 19: ...t 5 units Deviation Alarm 1 value 3 span from Setpoint 5 units Alarm 1 Hysteresis 1 250 units 1 unit Process High Alarm 2 value 3 Range Min To Range Max Range Max Process Low Alarm 2 value 3 Range Min...

Страница 20: ...or 1 enabled 0 disabled AM Key Usage Output Turn off Manual Control Heater Current display Manual Control Disable SP Ramping Enable Disable 0 disabled or 1 enabled 0 disabled Comms Write Enable Disabl...

Страница 21: ...sed to modify the actual process variable value measured at the Controller s input terminals in the following manner Offset PV value Actual PV value Process Variable Offset value O075 3 3 5 PM 0075 NO...

Страница 22: ...parameter is the portion of the input span of the Controller over which the Output 1 power level is proportional to the displayed process variable value It may be adjusted in the range 0 0 i e ON OFF...

Страница 23: ...O075 3 3 7 PM 0075 Figure 3 1 Proportional Band and Deadband Overlap...

Страница 24: ...the point at which Output 1 reaches 0 3 2 10 Bias Manual Reset This bias to the output power is expressed as a percentage of output power and is adjustable in the range 0 to 100 if only Output 1 is fi...

Страница 25: ...or example for a 0 5V Recorder Output this value corresponds to 0V It may be adjusted within the range 1999 to 9999 The decimal point position for the Recorder Output is always the same as that for th...

Страница 26: ...tional Band 2 is set to 0 3 2 19 Process High Alarm 1 Value This parameter applicable only when Alarm 1 is selected to be a Process High alarm defines the process variable value at or above which Alar...

Страница 27: ...O075 3 3 11 PM 0075 Figure 3 2 Alarm Operation...

Страница 28: ...alarm is illustrated in Figure 3 3 3 2 24 Process High Alarm 2 Value This parameter applicable only when Alarm 2 is selected to be a Process High alarm defines the process variable value at or above...

Страница 29: ...O075 3 3 13 PM 0075 Figure 3 3 Alarm Hysteresis Operation...

Страница 30: ...ter defines the full scale value for the heater current range It may be adjusted from 10 0A to 20 0A in 0 1A increments and then from 21A to 100A in 1A increments The default value is 50A Heater curre...

Страница 31: ...ter Break Alarm is set OFF if the heater current exceeds the Heater Current High Scale Limit the High Heater Break Alarm will be forced active even if the effective Alarm level is set higher than the...

Страница 32: ...crements and OFF less than 15 seconds the default value is OFF 3 2 36 Auto Pre Tune Enable Disable This parameter determines whether or not Pre Tune is activated automatically on power up or not 0 Dis...

Страница 33: ...ess variable setpoint display is adjustable or not 1 not adjustable 2 adjustable The default setting is 1 NOTE During a Soft Start the active setpoint value cannot be altered regardless of the setting...

Страница 34: ...t the setpoint to the normal operating process value or to a lower value if overshoot beyond this value is likely to cause damage 2 Select ON OFF Control i e set Pb1 0 3 Switch on the process Under th...

Страница 35: ...2 Set Pb2 to the same value as Pb1 and monitor the operation of the Controller in dual output mode If there is a tendency to oscillate as control passes into the Output 2 proportional band increase t...

Страница 36: ...isplay process variable setpoint then depress the Raise and Function keys simultaneously whereupon the Controller will return to Operator Mode NOTE An automatic return to Operator mode will be execute...

Страница 37: ...e to interrogation from the master device 4 2 PHYSICAL REQUIREMENTS 4 2 1 Character Transmission The data format is fixed to be one start bit eight data bits and one stop bit The Baud rate may be sele...

Страница 38: ...smitted as eight bit binary bytes with one start bit one stop bit and optional parity checking none even or odd A message is terminated simply by a delay of more than three character lengths at the Ba...

Страница 39: ...ainder is of interest the right most most significant bit can be discarded Thus the polynomial has the value Hex A001 The CRC algorithm is shown in Figure 4 1 O075 4 4 3 PM 0075 Figure 4 1 Cyclic Redu...

Страница 40: ...ing eight bytes The normal reply will echo the first two characters of the message received followed by a single byte data byte count which will not include itself or the CRC For this message the coun...

Страница 41: ...e received message is syntactically correct but nonetheless contains an illegal value the Controller will send a five byte exception response as follows The Function Number byte contains the function...

Страница 42: ...imit is dictated by the sum total of all the RS485 receiver loadings 4 3 4 Bit Parameters The bit parameters are shown in Table 4 1 4 3 5 Word Parameters The word parameters are shown in Table 4 2 4 6...

Страница 43: ...o transfer This bit will always be 0 when read Short Circuit Heater Break Alarm Enable Disable 14 1 enable d 0 disable d Reserved 15 Reserved 16 NOTES 1 Not available if AM Key Usage see Subsection 3...

Страница 44: ...12 Read Only Alarm 1 value 13 Alarm 2 value 14 Manual Reset Bias 15 Overlap Deadband 16 ON OFF Differential 17 Decimal Point Position 18 Read Only Output 2 Cycle Time 19 Output 1 Power Limit 20 Contro...

Страница 45: ...Alarm 2 Hysteresis 36 1 250 or 0 1 25 0 as per Heater Current High Scale Limit Soft Start Setpoint 37 Soft Start Time 38 Soft Start Time Remaining 39 Read Only Returns 0 if not in Soft Start Manufact...

Страница 46: ...ter indicates the minimum process input value 4 4 1 5 DECIMAL POINT POSITION Word Parameter 18 This Read Only word parameter indicates the input range decimal point position 4 4 1 6 INPUT FILTER TIME...

Страница 47: ...cle Time values must be written correctly i e the value must be a power of 2 in the range 0 5 512 0 5 1 2 4 8 etc 4 4 2 4 OUTPUT 2 CYCLE TIME Word Parameter 19 This parameter may be modified interroga...

Страница 48: ...ters are set to their default values 4 4 3 2 HEATER NOMINAL CURRENT Word Parameter 30 This word parameter defines a nominal value for the heater current It may be adjusted in the range 0A to Heater Cu...

Страница 49: ...rameter is the setpoint value being used by the Controller at the instant the message is received When the setpoint is ramping this is the ramping setpoint value 4 4 5 Soft Start Parameters 4 4 5 1 SO...

Страница 50: ...hysteresis band on the safe side of the Alarm 2 value Thus Alarm 2 will become active when the Alarm 2 value is exceeded Alarm 2 will become inactive when the process variable value is outside the hy...

Страница 51: ...d inactive Default value 0 OFF Hysteresis is 0 5A for 0 1A resolution and 2A for 1A resolution 4 4 7 Tuning Parameters 4 4 7 1 RATE DERIVATIVE TIME CONSTANT Word Parameter 9 This word parameter may be...

Страница 52: ...The decimal point position is set to 1 decimal place 4 4 7 7 PROPORTIONAL BAND 2 VALUE Word Parameter 5 For a dual control output instrument this word parameter may be modified interrogated This may b...

Страница 53: ...ts and one stop bit The Baud rate may be selected to be 1200 2400 4800 default or 9600 Baud 5 2 2 Line Turn Round The communications link is operated as a multi drop half duplex system When a device i...

Страница 54: ...N P C Type 3 L N P DATA Type 4 L N P I where all characters are in ASCII code and L is the Start of Message character Hex 4C N is the slave Controller address in the range 1 99 addresses 1 9 may be re...

Страница 55: ...from the addressed Controller is of the form L N P DATA A where DATA comprises five ASCII coded digits whose format is shown in Table 5 1 The data is the value requested in a query message or the new...

Страница 56: ...see below Upon receipt of a Type 3 message if the DATA content and the specified parameter are valid the slave Controller reply is of the form L N P DATA I where I Hex 49 indicating that the Controll...

Страница 57: ...ue Scan Table F ON OFF Differential Setpoint Ramp Rate G Scale Range Max Read Only a Alarm 1 Hysteresis value H Scale Range Min Read Only b Alarm 2 Hysteresis value I Reset Integral Time Constant 1 c...

Страница 58: ...ers The reply from the Controller also contains the DATA field with the same content When the master device issues the Type 4 message the Controller responds with the same DATA field content The comma...

Страница 59: ...s 5 3 1 1 PROCESS VARIABLE OR MEASURED VARIABLE P M This parameter may be interrogated only using a Type 2 message If the process variable is out of range the five digit DATA field in the reply will n...

Страница 60: ...quality may be significantly impaired The value chosen should be sufficiently large to attenuate stray noise on the process variable signal but no larger 5 3 2 Output Parameters 5 3 2 1 OUTPUT POWER V...

Страница 61: ...SR Drive and Solid State outputs lower values may be used The decimal point position is set to 0 for all except the 0 5s value 00051 NOTE Cycle Time values must be written correctly if a Type 3 4 mess...

Страница 62: ...entage Mode 5 3 3 3 HEATER ACTUAL CURRENT P e This parameter indicates the most recent valid heater current value at the instant the message is received it is equivalent to calling up the heater curre...

Страница 63: ...the Controller at the instant the message is received When the setpoint is ramping this is the current value 5 3 5 Soft Start Parameters 5 3 5 1 SOFT START SETPOINT P j This parameter may be modified...

Страница 64: ...ctive The decimal point position is as for the input range 5 3 6 4 ALARM 2 HYSTERESIS P b This parameter which may be modified interrogated using a Type 2 message or a Type 3 4 message sequence applie...

Страница 65: ...lute Mode 0 1A 1A dependent upon display resolution Heater Current High Scale Limit and 0 OFF value display blank High Heater Break Alarm forced inactive Default value 0 OFF Hysteresis is 0 5A for 0 1...

Страница 66: ...using a Type 2 message or a Type 3 4 message sequence This may be set to 0 0 for On Off control or to a value in the range 0 5 999 9 of Output 1 power range The decimal point position is set to 1 5 3...

Страница 67: ...for a dual control output instrument These digits are as described in Table 5 2 and may comprise aaaaa The current setpoint value bbbbb The current process variable value ccccc The current value of Ou...

Страница 68: ...nable Disable 3 16 Automatic Tuning 1 3 B Band Alarm 1 3 10 Band Alarm 2 3 12 Baud Rate ASCII protocol 5 1 MODBUS protocol 4 1 Bias 4 15 5 14 See Also Manual Reset Broadcast Messages MODBUS RTU protoc...

Страница 69: ...ter Current Quck Transfer to nominal value 2 6 Heater Current Control Summary description 1 3 Heater Current Display Selection of Operator Mode 2 5 Selection de selection 2 5 Heater Current High Scale...

Страница 70: ...scription 1 3 Output 1 Use of 1 3 Output 1 Cycle Time 3 9 4 11 5 9 Output 1 Power Limit 3 9 4 11 5 8 Output 2 Use of 1 3 Output 2 Cycle Time 3 10 4 11 5 9 Output Power 1 3 6 Output Power 2 3 6 Output...

Страница 71: ...nsor Break Indication of 2 5 Serial Communications 4 1 Enabling disabling 3 17 End of Message character 5 2 Message Types 5 2 Scan Tables command 5 4 Start of Message character 5 2 Type 2 message 5 3...

Страница 72: ...remaining 4 13 Soft Start Time Remaining 5 11 T Thermal shocks Avoidance of 1 3 Three Term Control 1 3 Time Proportioning 1 3 Two wire Communications 4 1 W Write Operations MODBUS RTU protocol 4 1 5 O...

Страница 73: ...CONTROLLER 1 1 1 3 CONNECTIONS AND WIRING 1 3 2 INTERNAL LINKS AND SWITCHES 2 1 2 1 REMOVING THE CONTROLLER FROM ITS HOUSING 2 1 2 2 REMOVING REPLACING THE OUTPUT 2 OUTPUT 3 OPTION PCBs 2 3 2 3 REMOV...

Страница 74: ...ECIFICATION A 1 A 1 UNIVERSAL INPUT A 1 A 2 DUAL SETPOINT QUICK TRANSFER SELECTION INPUT OPTION A 3 A 3 HEATER CURRENT INPUT A 3 A 4 OUTPUT 1 A 4 A 5 OUTPUT 2 A 5 A 6 OUTPUT 3 A 6 A 7 LOOP CONTROL A 7...

Страница 75: ...HE CONTROLLER The panel on which the Controller is to be mounted must be rigid and may be up to 6 0mm 0 25 inches thick The cut out required for a single Controller is as shown in Figure 1 1 Several c...

Страница 76: ...is may result in inadequate clamping of the instrument in the panel Once the Controller is installed in its mounting panel it may be subsequently removed from its housing if necessary as described in...

Страница 77: ...TIONS AND WIRING The rear terminal connections are illustrated in Figure 1 4 1 16 DIN Controllers and Figure 1 5 1 8 DIN Controllers S075 1 1 3 PM 0075 Figure 1 4 Rear Terminal Connections 1 16 DIN Co...

Страница 78: ...1 4 S075 1 PM 0075 Figure 1 5 Rear Terminal Connections 1 8 DIN Controllers...

Страница 79: ...upply connections for the 24V AC DC option of the Controller are as shown in Figures 1 4 and 1 5 Power should be connected via a two pole isolating switch and a 315mA slow blow anti surge Type T fuse...

Страница 80: ...2 selected NOTE The Dual Setpoint Quick Transfer option and the RS485 Serial Communications option are mutually exclusive 1 3 6 Remote Heater Current Transfer Input Quick Transfer With the Dual Setpo...

Страница 81: ...or 9600 Baud over the required distance Transmitters receivers conform to the recommendations in the EIA Standard RS485 The A terminal on the Controller should be connected to the A terminal on the ma...

Страница 82: ...g simply grip the side edges of the front panel there is a finger grip on each edge and pull the Controller forwards This will release the Controller from its rear connectors in the housing and will g...

Страница 83: ...S075 2 2 2 PM 0075 Figure 2 2 Removing the Output 2 Output 3 Option PCBs...

Страница 84: ...the PCB in preparation for its replacement Adjustments may now be made to the link jumpers on the CPU PCB the PSU PCB and if fitted the DC Output 3 Option PCB The replacement procedure is a simple rev...

Страница 85: ...will operate if an attempt is made to insert the instrument in the wrong orientation e g upside down This stop must not be over ridden 2 5 SELECTION OF OUTPUT 1 TYPE The Output 1 type is selected by L...

Страница 86: ...e types of option PCB which may be used 1 Relay Output Option PCB Output 2 or Output 3 no link jumpers 2 Solid State Output Option PCB Output 2 or Output 3 no link jumpers 3 Dual Relay Output 2 Option...

Страница 87: ...S075 2 2 6 PM 0075 Figure 2 6 DC Output 3 Option PCB Link Jumpers DC Output 3 Range Link Jumpers Fitted DC 0 10V LJ8 DC 0 20mA LJ9 DC 0 5V LJ8 DC 4 20mA LJ9...

Страница 88: ...TE Changes to the setting of certain Configuration Mode parameters e g input range output use and type will cause the Set Up Mode parameters to be automatically set to their default values the next ti...

Страница 89: ...re Definition Code Represents the hardware fitted input type Output 1 type Output 2 type and Output 3 type must be compatible with the hardware actually fitted Option Selection Defines hardware option...

Страница 90: ...put i e re transmitted process variable or setpoint output The displayed code may be adjusted and new values confirmed as described on the previous page The maximum setting available for this code is...

Страница 91: ...m recorder output added removed etc The Controller software depends upon this code to ensure that the Controller operates correctly This code may be viewed as a Read Only display in Operator Mode see...

Страница 92: ...ill be displayed in the form The default setting is dependent upon the input hardware fitted as indicated by the first left most digit of the Hardware Definition Code see Subsection 3 2 1 If the Hardw...

Страница 93: ...t 2 COOL control output its action is always the complement of the action of Output 1 3 3 3 Alarm 1 Type When this item is selected the displays will be of the form the upper display indicating the cu...

Страница 94: ...up an alarm condition may occur based on the alarm value the process variable value and if appropriate to the alarm type the active setpoint value This would normally activate an alarm however if the...

Страница 95: ...en this parameter is set to the Absolute Amps mode the Heater Nominal Current parameter Set Up Mode see Volume 1 Section 3 is not available and Quick Transfer see Volume 1 Subsection 2 13 is disabled...

Страница 96: ...3 Usage The displays for this item are of the form in which the upper display indicates the usage which will be one of the following This setting can be changed and confirmed in the manner previously...

Страница 97: ...en this item is selected the initial display is of the form The Baud rate may be selected and confirmed as described earlier in this Section The Baud rates available are 1200 2400 4800 and 9600 3 3 11...

Страница 98: ...protocol 1 128 standard RS485 option 1 255 enhanced RS485 option ASCII protocol 1 99 standard and enhanced RS485 options 3 3 13 Cold Junction Compensation Enable Disable The display for this item is...

Страница 99: ...as been forgotten see also Volume 1 Subsection 3 2 41 3 4 EXIT FROM CONFIGURATION MODE To leave Configuration Mode depress the Raise and Function keys simultaneously This will cause a return to the Op...

Страница 100: ...solated from all outputs except SSR at 240V AC Process Variable Offset Adjustable input span Thermocouple Ranges selectable from front panel A 1 S075 A PM 0075 Type Input Range Dislayed Code Type Inpu...

Страница 101: ...within two seconds S075 A A 2 PM 0075 Type Input Range Dislayed Code Type Input Range Displayed Code L 0 0 205 7 C 1815 L 32 1403 F 1820 L 32 0 402 2 F 1816 B 211 3315 F 1934 L 0 450 C 1817 B 100 182...

Страница 102: ...etpoint 2 2 0V to 24 0V Maximum Input Delay OFF ON 1 second Minimum Input Delay ON OFF 1 second A 3 HEATER CURRENT INPUT Input Sampling Method Delta Sigma at 1kHz Input Resolution 8 bits over 250ms ro...

Страница 103: ...to 500 minimum Isolation Not isolated from input or other SSR outputs Solid State Operating Voltage Range 20 280Vrms 47 63Hz Current Rating 0 01 1A full cycle rms on state 25 C derates linearly above...

Страница 104: ...isolated from input or other SSR outputs Dual Relay Output 2 and Output 4 Contact Type Single pole single throw normally open Both relays share a single common terminal Rating 2A resistive at 120 240...

Страница 105: ...2A resistive at 120 240V AC Lifetime 500 000 operations at rated voltage current Isolation Inherent Solid State Operating Voltage Range 20 280Vrms 47 63Hz Current Rating 0 01 1A full cycle rms on sta...

Страница 106: ...nimum Isolation Isolated from all other inputs and outputs Range Selection Method Link jumper A 7 LOOP CONTROL Automatic Tuning Types Pre Tune and Self Tune Proportional Bands 0 OFF 0 5 999 9 of input...

Страница 107: ...with selected range A 8 SOFT START Start up Setpoint Bounded by Range Maximum and Range Minimum Setpoint ramping is not applied during Soft Start Duration 0 Soft Start disabled 59 mins 45 secs in 15 s...

Страница 108: ...lute Amps or percentage from nominal adjustable Short Circuit alarm is fixed at 5 of Heater High Scale Limit Nominal Heater Current Can be adjusted manually or using Quick Transfer automatically Quick...

Страница 109: ...at 50 60Hz causes negligible effect Thermocouple Inputs Measurement Accuracy 0 25 of span 1LSD Linearisation Accuracy Better than 0 2 C any point any 0 1 C range 0 05 C typical Better than 0 5 C any p...

Страница 110: ...ange in ambient temperature Cold Junction Compensation thermocouple Only Better than 1 C Supply Voltage Influence Negligible Relative Humidity Influence Negligible Sensor Resistance Influence Thermoco...

Страница 111: ...RMANCE Approvals CE UL pending ULC pending EMI Susceptibility Certified to EN50082 1 1992 and EN50082 2 1995 NOTE For line conducted disturbances induced by RF fields 10V 80 AM 1kHz the product is sel...

Страница 112: ...Mounting Plug in with panel mounting sleeve Panel cut out 45mm x 45mm 1 16 DIN Panel Cutout 45mm x 92mm 1 8 DIN Terminals Screw type combination head Weight 0 21kg maximum A 13 S075 A PM 0075...

Страница 113: ...Controller Dimensions A 12 Current Transformer Connections to 1 6 D Dual Setpoint Selection TTL Compatible Input 1 6 Voltage Free Contacts 1 6 Dual Setpoint Quick Transfer Option PCB Removal replacem...

Страница 114: ...imum panel thickness 1 1 Panel mounting the Controller 1 1 Product Specification A 1 Q Quick Transfer Selection Input Treminal connections 1 6 Quick Transfer Dual Setpoint Option PCB Removal replaceme...

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