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Model FL3112

24

7.3.2 Modbus

Read

Response Message

Byte

Modbus

Range

Referenced to FL3112

1

st

Slave Address

1-247* (Decimal) FL3112 ID (Address)

2

nd

Function Code

03

Read Holding Registers

3

rd

Byte Count

02

No. of Data Bytes

4

th

Data Hi 00-FF (Hex)

FL3112 Hi Byte Status Data

5

th

Data Lo

00-FF (Hex)

FL3112 Lo Byte Status Data

6

th

CRC Lo

00-FF (Hex)

CRC Lo Byte

7

th

CRC Hi

00-FF (Hex)

CRC Hi Byte

* Note: Address 0 is reserved for broadcast mode and will not be supported at this time

7.4 Modbus Write Command Protocol (Query/Response)

7.4.1 Modbus

Write Query Message

Byte

Modbus

Range

Referenced to FL3112

1

st

Slave Address

1-247* (Decimal) FL3112 ID (Address)

2

nd

Function Code

06

Preset Single Register

3

rd

Register Address Hi**

00

Not used by FL3112

4

th

Register Address Lo**

00-FF (Hex)

FL3112 Command Registers

5

th

Preset Data Hi

00-FF (Hex)

FL3112 Hi Byte Command Data

6

th

Preset Data Lo

00-FF (Hex)

FL3112 Lo Byte Command Data

7

th

CRC Lo

00-FF (Hex)

CRC Lo Byte

8

th

CRC Hi

00-FF (Hex)

CRC Hi Byte

* Note: Address 0 is reserved for broadcast mode and will not be supported at this time.
** Note: Register Address can be a maximum of 9999 Address Locations (0000-270E)

7.4.2 Modbus

Write Response Message

Byte

Modbus

Range

Referenced to FL3112

1

st

Slave Address

1-247* (Decimal) FL3112 ID (Address)

2

nd

Function Code

06

Preset Single Register

3

rd

Register Address Hi**

00

Not used by FL3112

4

th

Register Address Lo**

00-FF (Hex)

FL3112 Command Register

5

th

Preset Data Hi

00-FF (Hex)

FL3112 Hi Byte Command Data

6

th

Preset Data Lo

00-FF (Hex)

FL3112 Lo Byte Command Data

7

th

CRC Lo

00-FF (Hex)

CRC Lo Byte

8

th

CRC Hi

00-FF (Hex)

CRC Hi Byte

* Note: Address 0 is reserved for broadcast mode and will not be supported at this time.
** Note: Register Address can be a maximum of 9999 Address Locations (0000-270E)

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Summary of Contents for FL3112

Page 1: ...in this document may be used and disseminated only for the purposes and to the extent specifically authorized in writing by General Monitors Instruction Manual 09 09 General Monitors reserves the right to change published specifications and designs without prior notice Part No MANFL3112 EU Revision H 09 09 ...

Page 2: ...by its employees or other personnel All warranties are contingent upon proper use in the application for which the product was intended and do not cover products which have been modified or repaired without General Monitors approval or which have been subjected to neglect accident improper installation or application or on which the original identification marks have been removed or altered Except...

Page 3: ...ompetent Body Certificate No 85EA1460A 5726 issued by ERA Technology Ltd Cleeve Road Leatherhead Surrey KT22 7SA England Tel 44 1372 367000 This declaration shall cease to be valid if modifications are made to the equipment without our approval PRODUCT FL3112 DFIR Flame Detector It is ensured through internal measures and our ISO9001 1994 certifications that series production units conform at all ...

Page 4: ...2 3 Electrical Specifications 5 2 4 Environmental Specifications 6 2 5 Modbus RTU Protocol 6 3 0 Installation 7 3 1 Upon Receipt of Your Equipment 7 3 2 Choosing Detector Locations 7 3 3 Detector Installation 8 3 4 Interconnecting cable Guidelines 8 3 5 Installation Instructions 9 3 6 Terminal Connections 12 3 7 User Selectable Options 15 3 8 Factory Default Settings 17 4 0 Maintenance 19 4 1 Gene...

Page 5: ...1 Baud Rate 23 7 2 Data Format 23 7 3 Modbus Read Status Protocol Query Response 23 7 4 Modbus Write Command Protocol Query Response 24 7 5 Exception Responses and Exception Codes 25 7 6 FL3112 Command Register Locations 27 7 7 FL3112 Operational Mode Command Register Details 29 Customer Satisfaction Questionnaire 36 ...

Page 6: ...Infrared Ultraviolet and the Visible Spectral Regions The General Monitors Model FL3112 is a Digital Frequency Infrared DFIR Flame Detector The Model FL3112 detects the Infrared spectral regions of flame to produce a system which is highly immune to false alarms caused by lightning arc welding hot objects and other sources of radiation In addition the FL3112 can see through most smoky type fires s...

Page 7: ...r discrimination circuit This permits the detector to ignore steady state IR sources such as hot objects The inherent flickering of a flame provides the necessary modulation to activate the IR circuit The Model FL3112 Flame Detector processes these IR signals with a microcomputer and depending on the version produces the following outputs 0 to 20 milliampere signal Immediate WARN relay contacts Ti...

Page 8: ...ed once per minute and it requires two check failures to produce a FAULT it may take up to two minutes for the unit to detect an obstruction Alarm Test The Model FL3112 Flame Detector has a built in Alarm Test feature This test may be activated via the serial communications port see Section 3 4 Terminal Connections The Flame Detector will immediately go into WARN and then into the time delayed ALA...

Page 9: ...imum 50 Ohms loop with maximum 250 Ohms input impedance of readout unit Remote power supply 3000 feet 930 m maximum 20 Ohms loop and 24 VDC minimum See Section 3 4 Terminal Connections Approvals ATEX CE Mark Warranty Two Years NOTE 1 Response Times and Field of View data have been derived by testing the Model FL3112 Flame Detector with a 1 square foot gasoline fire One cup of unleaded gasoline on ...

Page 10: ...Maximum supply current 150mA Maximum output signal Load 24 VDC 600 Ohms Output signal range 0 to 20mA FAULT signal 0 to 0 2mA COPM fault signal 2 0mA 0 2 mA Ready signal 4 0 0 2 mA WARN signal 16 0 0 2 mA ALARM signal 20 0 0 2 mA Relay Contact Ratings 1A MAX 30VRMS 42 2 VPK Resistive RS 485 Serial Communications Port Modbus RTU Protocol 128 units MAX 247 units with repeaters Baud Rate 2400 4800 96...

Page 11: ... F to 176 F Storage temperature range 40 C to 75 C 40 F to 176 F Humidity range 0 to 100 RH non condensing 2 5 Modbus RTU Protocol For detailed information on data format read commands write commands register details register locations refer to the Serial Communications section in this manual ...

Page 12: ...sion This Cone has its vertex at the center of the detector see figure 3 A Optical Sensitivity Range The distance at which the detector will respond to a flame is a function of the intensity of that flame The maximum distance is 50 feet 15 2m for a gasoline fire with a surface area of 1 square foot 0 92m2 1 Environmental Factors 2 Mounting should be as free from shock and vibration as possible and...

Page 13: ...BS5308 Part 2 Type 2 or equivalent are suitable Interconnecting cables should be segregated from power and other noisy cables Avoid proximity to cables associated with radio transmitters welders switched mode power supplies inverters battery chargers ignition systems generators switch gear arc lights and other high frequency or high power switching process equipment In general maintain a separatio...

Page 14: ...le screens drain wires must not be connected electrically to the electronic circuitry of the FL3112 Connect Safety Earth to the chassis grounding screw available on the rear exterior of the base assembly This Safety Earth wire should have a wire gauge of at least 22 AWG 0 33mm2 and be no longer than 3 meters in length 3 5 2 Cable Termination in Safe Area The cable armour must be connected to Safet...

Page 15: ...Model FL3112 10 Figure 3 A FL3112 Field of View ...

Page 16: ...Model FL3112 11 Figure 3 B Outline Drawing ...

Page 17: ...re Each wire should be stripped as shown in figure 3 D Figure 3 D Strip Length Four of the six positions on the terminal block have functions which depend on the FL3112 version selected The remaining two positions are reserved for the power connections Figure 3 C outlines the terminal block connections by version On this and the following pages is a description and specification for each of the si...

Page 18: ...ax 600 ohms For interfacing with 250 ohm input impedance devices the following maximum cable lengths apply maximum 50 ohm loop AWG mm2 FEET METRES 14 AWG 2 08 9000 2750 16 AWG 1 31 5800 1770 18 AWG 0 82 3800 1160 20 AWG 0 52 2400 730 22 AWG 0 33 1700 520 COMMUNICATIONS OUTPUTS DATA 1A DATA 1B DATA 2A DATA 2B These are the connections for the RS 485 serial communications ports 1 2 The RS 485 connec...

Page 19: ...PM check During these conditions the FAULT relay will de energize and the analogue output signal will drop to 0 mA 2mA for COPM Faults for the duration of the FAULT FAULT relay contact rating is 1A 30VRMS 42 2VPK Resistive COMM Description This is the common connection of the WARN ALARM and FAULT relay contacts Figure 3 E Relay Outputs FIELD LOOP OUTPUTS Figure 3 F LP and LP Description These are ...

Page 20: ...ded the option settings be specified when ordering the FL3112 Versions with serial communications capabilities can be re programmed via the communications port s Refer to section 7 for details Other versions can be re programmed with the Program Card accessory if necessary PROGRAM CARD ACCESSORY The Program Card is a small module with a DIP switch which can be read by the FL3112 microprocessor DIP...

Page 21: ...ON DIP switch positions 1 to 4 are not relevant here WARNING During the following steps proper anti static procedures must be observed Failure to do so may permanently damage the FL3112 electronic circuits and void the warranty To re program remove the detector from the Base Assembly disconnect the fly lead and disconnect the retainer strap at the rear of the Base only 1 Refer to figure 3 G and re...

Page 22: ... the power supply board Insert the front cap assembly into the FL3112 enclosure ensuring the o ring does not snag and secure with the five screws Inspect the o ring on the Base assembly for damage and the corresponding surfaces for contamination If necessary clean or replace and re apply a suitable grease to the o ring and corresponding surfaces Re connect the retainer strap at the rear of the Bas...

Page 23: ...Model FL3112 18 Figure 3 G Front Cap Assembly ...

Page 24: ...solution Do not touch the lens with fingers a Wet the lens with the solution b Rub with a dry unsoiled cloth until clean c Completely dry the lens d Repeat steps a b and c for the reflector NOTE The removal of particulate matter and any film build up on the lens and reflector is necessary to ensure proper sensitivity of the system It is recommended that the lens and reflector be cleaned at least e...

Page 25: ...and or the ALARM TEST function see section 1 2 Principle of Operation Alarm Test should be used See Section 6 Spares Accessories for details on test lamps 4 4 Storage These Flame Detectors should be stored in a clean dry area and within the temperature and humidity ranges quoted in Section 2 4 Environmental Specifications ...

Page 26: ...iption of the problem should be included Be sure to inhibit or disconnect external alarm wiring before making any checks which might send the unit into alarm if an alarm condition will create problems NOTE If the equipment is under warranty any repairs performed by persons other than General Monitors authorized personnel may void the warranty Please read the warranty statement carefully Problem Po...

Page 27: ...erating Instructions It is always important to start a series of TL103 checks with a fully charged unit Stand within 10 feet of the unit to be tested and aim the TL103 squarely into the detector face If the system is operating normally the detector will go into a WARNing condition after a few flashes of the Test Lamp If the lamp remains ON for the time delayed period of the DIP switch setting the ...

Page 28: ... 8 N 2 7 3 Modbus Read Status Protocol Query Response 7 3 1 Modbus Read Query Message Byte Modbus Range Referenced to FL3112 1st Slave 1 247 Decimal FL3112 ID Address 2nd Function Code 03 Read Holding Registers 3rd Register Address Hi 00 Not Used by FL3112 4th Register Address Lo 00 FF Hex FL3112 Command Registers 5th No of Registers Hi 00 Not Used by FL3112 6th No of Registers Lo 01 No of 16 Bit ...

Page 29: ...Command Registers 5th Preset Data Hi 00 FF Hex FL3112 Hi Byte Command Data 6th Preset Data Lo 00 FF Hex FL3112 Lo Byte Command Data 7th CRC Lo 00 FF Hex CRC Lo Byte 8th CRC Hi 00 FF Hex CRC Hi Byte Note Address 0 is reserved for broadcast mode and will not be supported at this time Note Register Address can be a maximum of 9999 Address Locations 0000 270E 7 4 2 Modbus Write Response Message Byte M...

Page 30: ...e Exception Code See below 4 th CRC Lo 00 FF Hex CRC Lo Byte 5th CRC Hi 00 FF Hex CRC Hi Byte Function Code Field In a normal response the FL3112 echoes the function code of the original query in the function code field of the response All the Function Codes have a most significant bit MSB of zero 0 In an exception response the FL3112 sets the MSB of the function code to a one 1 With the function ...

Page 31: ... field is not an allowable value for the FL3112 04 Slave Device Failure An unrecoverable error occurred while the FL3112 was attempting to perform the requested action 05 Acknowledge The FL3112 has accepted the request and is processing it but a long duration of time will be required to do so This response is returned to prevent a timeout error from occurring in the master 06 Device Busy The FL311...

Page 32: ...e Rev Indicates the SW Revision ASCII 2 Char R 0005 40006 7 7 6 COPM Fault IR COPM Fault Bit 8 Bit R 0006 40007 7 7 7 Not Used 0007 40008 Options Indicates Unit Options Bit 8 Bit R W 0008 40009 7 7 8 Address Unit Address Value 1 247 R W 0009 40010 7 7 9 Not Used 000A 40011 Baud Rate Indicates present Baud Rate Value 0 3 R W 000B 40012 7 7 10 2400 4800 9600 19200 Data Format Indicates Data Format V...

Page 33: ...No of Function Code Value 8 Bit R 0022 40035 7 7 19 Errors Errors Starting Address Total No of Starting Address Value 8 Bit R 0023 40036 7 7 20 Errors Errors No of Register Total No of Register Errors Value 8 Bit R 0024 40037 7 7 21 Errors RXD CRC Lo Total No of RXD CRC Lo Value 8 Bit R 0025 40038 7 7 22 Errors Errors RXD CRC Hi Total No of RXD CRC Hi Value 8 Bit R 0026 40039 7 7 23 Errors Errors ...

Page 34: ... of the FL3112 Mode Decimal Value Powerup Delay 1 Warn Non latching Only 2 Warn Alarm Non Latching 3 Warn Latching Only 4 Alarm Latching Only 5 Warn Alarm Latching 6 Ready State No Fire 7 Alarm Test 10 COPM Fault Detected 11 7 7 3 Status Error A read returns the errors that are occurring at the present time which are indicated by bit position Byte Function Bit Position Low EEPROM Checksum 8 EEPROM...

Page 35: ...rns the software revision of the FL3112 in 2 ASCII characters Usually a blank and then a letter revision ex A B C etc 7 7 7 COPM Fault A read returns the type of Continuous Optical Path Monitoring COPM Fault which is a Fire COPM Fault or Sun COPM Fault The Fire COPM Fault indicates that the window is dirty and needs to be cleaned or there is a hardware problem with the Fire Channel detection circu...

Page 36: ...n Latched Alarm Latched 5 1 Latched Read Write 0 Non Latched Time Delay in Seconds 4 8 2 10 Alarm Time Delay 2 4 0 0 1 1 Read Write Alarm Time Delay 1 3 0 1 0 1 Read Write Sensitivity 100 75 50 Sensitivity 2 2 0 0 1 Read Write Sensitivity 1 1 LSB 0 1 0 Read Write High Data Byte Not Used 7 7 9 Address A read returns the address of the FL3112 A write changes the address to the requested address The ...

Page 37: ...rmat of the FL3112 A write changes the data format to the requested data format After the data format has been changed to the addressed unit the Modbus communications may cease or start producing comm errors because the data format has changed therefore the master will have to change its data format to the slave s new data format in order to restart or provide proper communications These Functions...

Page 38: ...rite 7 7 15 Remote Alarm Test Writing a 1 to the bit activates the Remote Alarm Test function that activates the Warn and Alarm relay turn on along with the analogue current status Once the Alarm Test is complete the function should be disabled by writing a zero to Remote Alarm Test and then resetting the Alarm and Warn relays by writing a one to the Remote Reset referenced above Function Bit LSB ...

Page 39: ... rollover to zero and begin counting again 7 7 20 Starting Address Errors A read indicates the number of Starting Address Errors that occurred in the slave device The maximum count is 255 and then the counter will rollover to zero and begin counting again 7 7 21 Number of Register Errors A read indicates the Number of Register Errors that occurred in the slave device The maximum count is 255 and t...

Page 40: ... Flag Errors that occurred in the slave device The maximum count is 255 and then the counter will rollover to zero and begin counting again 7 7 26 Framing Errors A read indicates the number of Framing Errors that occurred in the slave device The maximum count is 255 and then the counter will rollover to zero and begin counting again 7 7 27 SCI Errors A read indicates the number of SCI Serial Commu...

Page 41: ...___________________ General Monitors Sales Order No ________________________________________________________ Please tick appropriate box Yes No 1 Was the equipment the correct option 2 Are sensors correct type and range 3 Is mechanical assembly good everything proper fit and tight 4 Did you receive the necessary accessories to commission the equipment 5 Has the equipment been commissioned 6 Any pr...

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