Instruction Manual

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DS2 series Instruction manual

INDEX

1. GENERAL INFORMATION ..................................................................................................................... 1

1.1. General description of the AREAscan

light grid............................................................................ 1

1.2. Selecting the device ......................................................................................................................... 2

1.3. Typical applications .......................................................................................................................... 3

2 INSTALLATION MODES ........................................................................................................................ 4

2.1. Precautions to be observed for the choice and installation of the device........................................ 4

2.2. General information on device positioning .......................................................................................4

2.2.1. Minimum installation distance................................................................................................ 4

2.2.2. Minimum distance from reflecting surfaces ........................................................................... 5

2.2.3. Installation of several adjacent light grids .............................................................................. 6

3. MECHANICAL MOUNTING .................................................................................................................... 7

4. ELECTRICAL CONNECTIONS............................................................................................................... 8

4.1. Notes on connections....................................................................................................................... 9

5. FUNCTIONING MODES........................................................................................................................ 10

5.1. Detection mode .............................................................................................................................. 10

5.2. Measurement mode ....................................................................................................................... 10

5.3. Transition detection (number of transitions)...................................................................................11

5.4. Notes on functioning mode ............................................................................................................ 11

5.5. RS485 serial output setting ............................................................................................................ 12

6. FUNCTION AND PROGRAMMING SELECTION................................................................................. 12

6.1. Local programming......................................................................................................................... 13

6.1.1. Teach-in with detection ........................................................................................................ 14

6.1.2. Absolute detection mode ..................................................................................................... 15

6.1.3. Relative detection mode ...................................................................................................... 16

6.2. Remote programming..................................................................................................................... 17

6.2.1. DS2 user interface – General information ........................................................................... 18

6.2.2. Program installation ............................................................................................................. 19

6.2.3. Graphic user interface..........................................................................................................20

6.2.4. Connection with AREAscan

DS2 series........................................................................... 20

6.2.5. Configuration of the AREAscan

DS2 series ..................................................................... 24

6.2.6. File saving of the configuration options ............................................................................... 29

6.2.7. File loading of the configuration options .............................................................................. 29

7. AREASCAN

DS2 SERIES – COMMUNICATION PROTOCOL........................................................ 30

7.1. Packet description .......................................................................................................................... 30

7.1.1 Binary data packet structure ................................................................................................ 30

7.1.2. Short protocol binary data packet structure ......................................................................... 30

7.1.3. ASCII data packet structure ................................................................................................. 30

7.2 Operating mode: DS2 (master)  Host Interface (slave) .............................................................. 31

7.2.1. Packet description................................................................................................................ 31

7.3. Configuration mode: DS2 (slave)  Host (master) ....................................................................... 34

7.3.1 Host appropriation procedure of the bus ............................................................................. 34

7.3.2 Command packet description: ............................................................................................. 35

8. DIAGNOSTIC FUNCTIONS AND LED INTERFACE ERROR SIGNALLING ...................................... 41

8.1. Device status visualisation ............................................................................................................. 41

9. CHECKS AND PERIODICAL MAINTENANCE.................................................................................... 42

10. TECHNICAL DATA ............................................................................................................................... 43

10.1. Response time ......................................................................................................................... 43

11. LIST OF AVAILABLE MODELS ........................................................................................................... 44

12. OVERALL DIMENSIONS ...................................................................................................................... 44

Summary of content (45 pages)

PAGE 1
DS2 series Instruction manual INDEX 1. GENERAL INFORMATION ..................................................................................................................... 1 1.1. General description of the AREAscanTM light grid............................................................................ 1 1.2. Selecting the device ......................................................................................................................... 2 1.3. Typical applications .......................
PAGE 2
Instruction manual DS2 series 1. GENERAL INFORMATION 1.1. General description of the AREAscanTM light grid The AREAscanTM light grids are multibeam optoelectronic devices that can be used to detect objects, including small and transparent targets as well as for measurement detection. The variety of functions implemented make the DS2 a particularly flexible device that suits many different applications.
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DS2 series Instruction manual 1.2. Selecting the device The selection of the correct device version is linked to the detection area needed, which is considered as the sensitive area height of the device as well as to the maximum operating distance, considered as the distance between the emitter unit (TX) and receiver unit (RX) and optics interaxis. Versions are available: Operating distance Detection field interaxis DS2-05-07-015-JV 5m 21 beams; h=150mm DS2-05-07-030-JV 5m 42 beams; h=300mm 6.
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Instruction manual DS2 series 1.3. Typical applications The following images supply an overview on some main applications.
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DS2 series 2 Instruction manual INSTALLATION MODES 2.1. Precautions to be observed for the choice and installation of the device • The dimension of the smallest object to be detected should not to be lower than the resolution level of the device. • The DS2 should be installed in a place compatible with the technical characteristics (see section 10 “Technical Data”) of the AREAscanTM light grids.
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Instruction manual DS2 series 2.2.2. Minimum distance from reflecting surfaces Reflecting surfaces placed near light beams of the AREAscanTM device (over, under or laterally) may cause passive reflections that can compromise the detection of an object inside the controlled area (see Fig.1). Fig. 1 However, the object may not be detected if the receiver detects a secondary beam (reflected by the side-reflecting surface), even if the entering object interrupts the main beam.
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DS2 series Instruction manual 2.2.3. Installation of several adjacent light grids When several devices must be installed in adjacent areas, it is necessary to prevent the interference between the emitter of one device and the receiver of another. Fig.2 provides an installation example of possible interference between different devices and two possible solutions. NO SI SI Fig.
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Instruction manual DS2 series 3. MECHANICAL MOUNTING The emitter and receiver units have to be mounted with the relevant sensitive surfaces facing each other. The connectors must be positioned on the same side and with the operating distance of the model used (see section 10 “Technical data”). The two units must be aligned and parallel as much as possible. To mount the device, insert the threaded pins supplied (see Fig.3) in the slots present on the two units.
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DS2 series Instruction manual 4. ELECTRICAL CONNECTIONS The electrical connection between the emitting and receiving units is made through a male M12 connector located in the lower part of the light grid.
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Instruction manual DS2 series 4.1. Notes on connections The following precautions regarding electrical connections have to be respected for the correct functioning of the AREAscanTM light grid. • Shielded cables are not foreseen in the standard connection. However, if necessary, these cables can be used in presence of ground connection of both the unit and cable, as shown in Fig.5. Fig. 5 • In any case, these cables must not be placed in contact with or near any high voltage cables (e.g.
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DS2 series Instruction manual 5. FUNCTIONING MODES The DS2 light grids detect and measure objects placed inside the detection area. Hence, beam interruptions can cause output switching, analogue output signal variation and serial output updating. Small objects (up to 12 mm) detection and geometrical measurements determined with approximately 6 mm resolution can be obtained by setting the device according to the different functioning modes.
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Instruction manual DS2 series 5.3. Transition detection (number of transitions) The transition detection counts the number of transitions in the detection area. The number of transition increases each time that an object is detected inside the detection area and decreases each time the objects remain outside (transition light->dark). 5.4. Notes on functioning mode • The DS2 light grids can configure the beam reference status, specifically selecting it from the user interface.
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DS2 series Instruction manual 5.5. RS485 serial output setting Serial output data updating is usually made at the end of each scanning cycle. This conditions enormously the response time, as it is depends on the serial baud-rate, data structure and information detail that has to be transmitted on the serial output for the application. Some serial configuration commands have been added to make the device flexible to different applications. The remote user interface completely controls these commands.
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Instruction manual DS2 series 6.1. Local programming ON 1A 2A 3A 4A The following table indicates the type of function and relative position of the dip-switches. ON 1B 1B 2B 3B 4B (-) Mode Analogue Switching Serial Programming mode Run Time ON Local - - - OFF Remote ON Serial output analysis mode Complete - - Complete Beam Status Array OFF Partial - - Partial ASCII ON Reference = First Beam (closest to connector) V=VRes*NBEAM [Top; ref] Incr.
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DS2 series Instruction manual 6.1.1. Teach-in with detection The Teach-in mode can be selected using dip-switches and using remote user interface. For local programming of the Teach-in mode, the Teach-in wire should be connected to a pushbutton normally open on the 24 V line and proceed as follows: • • • • • Select the Teach-in enable mode (dip switch 1B OFF). Switching output deactivated Place object inside the detection area at the desired position Press the push-button.
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Instruction manual DS2 series 6.1.2. Absolute detection mode The digital output switches only if the object, whose dimensions have been previously memorised, passes in the exact position where it has been previously detected (see Fig.13). The analogue output is always active in this configuration and supplies a voltage value according to the measurement setting.
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DS2 series Instruction manual 6.1.3. Relative detection mode The digital PNP output switches each time the sample object passes through the sensitive area, independently from its position (see Fig.14). The analogue output is always active in this configuration and supplies a voltage value according to the measurement setting.
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Instruction manual DS2 series 6.2. Remote programming The function programming and selection is made using an user interface on a remote host, which communicates with DS2 using the standard RS232 serial interface. The interface can be found in the CD supplied with the device packet. The remote programming function selection is activated only by dip-switches (dip-switch 1Aoff) N.B.: DS2 device fix in memory the last setting configuration from remote user interface.
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DS2 series Instruction manual 6.2.1. DS2 user interface – General information The DS2 user interface is a Windows program, compatible with 9x/SE/Me/NT/2000/XP versions, that controls the scanning trend and the digital output status of the DS2 AREAscanTM light grids. Thanks to the easy and intuitive user interface, the different configuration parameters of the light grid, stored in the non-volatile device memory, can be visualised and modified.
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Instruction manual DS2 series 6.2.2. Program installation Insert the CD of the DS2 Host Interface software in the PC reader. The installation program will begin automatically. Simply follow the indications provided. Fig.
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DS2 series Instruction manual 6.2.3. Graphic user interface The following window will be visualised at program initialisation: Fig. 17 Two important areas are distinguished: the data control area on the left (graph representing light grid with scanning area, Teach-in status indicated on a measurement bar, a panel with luminous indicators and dip-switch status, various digital indicators for measurement visualisation and a communication status bar). The function selection area is on the right side. 6.2.4.
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Instruction manual DS2 series The following figures show the typical diagram of a RS232/RS485 converter.
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DS2 series Instruction manual Fig.19 After connection (see Fig.
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Instruction manual DS2 series Figure 20 shows the windows on the right side of the interface, which is initially deactivated: • Remote prog.: this page visualises the different parameter settings and thus allows their modification in the remote mode. • Local prog.: visualises only the status of the dip-switches present on DS2. • Teach-in: edits the object shape using the Teach-in mode. Fig.
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DS2 series Instruction manual 6.2.5. Configuration of the AREAscanTM DS2 series The configuration session can be accessed selecting the Configure button. Fig.21 The access in the configuration mode suspends the scanning during the entire session. A small window visualises a “Wait please…” message. If the command is accepted, the Configure button changes and becomes End, and the Download and Update buttons are activated. The data entry fields and the selection buttons are also active.
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Instruction manual DS2 series Remote configuration from host user interface: synoptic table showing the output variation with respect to the serial output configuration Function Mode SW Serial Communication Enable Serial Transmission Type Baud Rate Enable Disable pin5 RX connector on 24Vdc pin5 RX connector floating ASCII Binary 9600 19200 38400 57600 Analog - Outputs Switching Serial Comm. Enable Comm. Disable - - Comm. Enable - - Comm.
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DS2 series Instruction manual Remote configuration from host user interface: synoptic table showing the output variation with respect to the detection analysis mode configuration Function Mode Normal TEACHIN TEACHIN Mode Outputs Analog Switching Serial - Presence detection - Get TEACH-IN from DS2 Set TEACH-IN from User Interface Conditional presence detection from TEACH-IN Absolute Positioning Detection Positional detection of TEACH-IN ref.
PAGE 28
Instruction manual DS2 series The local teach-in mode can be emulated through serial interface selecting a group of contiguous beams. Select the first and last photoelements of the segment that have to be added and then press Add. The shape is immediately drawn in the Teach-in bar (see Fig.22). This operation can be repeated to set different objects with the most varied shapes. The entire shape can be changed or inverted selecting repetitively the Cancel and Invert buttons.
PAGE 29
DS2 series Instruction manual Remote configuration from host user interface: synoptic table showing the output variation with respect to the detection analysis mode configuration Function Mode Complete Beam Status Array Outputs Analogue Switching Serial ASCII V=VRES*NBEAM [dark] Top Beam Bottom Beam Dark (default) V=VRES*NBEAM [Top; reference] Top Beam ASCII Binary Light V=VRES*NBEAM [Top light; reference] Top Beam (light) ASCII Binary Dark (default) V=VRES*NBEAM [Bottom; reference] Bot
PAGE 30
Instruction manual DS2 series The following windows can appear successively: If one or both windows appear, some data have been changed or the operator has forgotten to update DS2 with the changes. Press Yes to confirm, or No to ignore changes. Lastly, depending on the options selected, a window like this could appear: This window warns the operator that the scanning time exceeds the value set in milliseconds per cycle. 6.2.6.
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DS2 series Instruction manual 7. AREAscanTM DS2 SERIES – COMMUNICATION PROTOCOL 7.1. Packet description As mentioned, the communication protocol requires a master unit and a slave unit. The communication type is half duplex (RS485). The exchange of information is made in the request-reply mode: the master sends a data packet to the slave that replies sending another data packet to the master. 7.1.
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Instruction manual DS2 series 7.2 Operating mode: DS2 (master) Host Interface (slave) At powering the DS2 becomes the master and transmits periodically, as previously explained, a packet at each scanning of the measurement information according to the configuration. The host, which is the slave, receives the packet and elaborates the data. This is the only case where a response packet is not necessary. 7.2.1. Packet description a.
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DS2 series Instruction manual b. Complete ASCII scanning result (Complete beam status array) - 0x41 (‘A’ ASCII) Sends to host the pattern with the ASCII information relative to each beam. DS2 sends: 0x2A where: aaaaaa bbbbbb cccccc zzzzzz ss = = = = = 0x41 aaaaaa bbbbbb cccccc …..
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Instruction manual DS2 series d. Partial Binary scanning result (Measurements) – Short protocoll Send to host one measure only with reduced binary format (one byte). DS2 sends (one measurement only): a where: a = 1 byte with measure (0 – 231) e. Partial ASCII scanning result (Measurements) - 0x42 (‘B’ ASCII) Sends to host one or due numeric measurements in ASCII (see above).
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DS2 series Instruction manual 7.3. Configuration mode: DS2 (slave)  Host (master) 7.3.1 Host appropriation procedure of the bus To access the configuration mode, the DS2 has to receive a special command that momentary suspends scanning and the control is passed to the host. The host thus becomes the master and the DS2 the slave. All the outputs are deactivated. The device remains in this mode until it receives the configuration quit command.
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Instruction manual DS2 series 7.3.2 Command packet description: a. Synchronism command - 0x43 (‘C’ ASCII) The host can use this command when connected to DS2 to obtain the local/remote configuration parameters. If the serial transmission speed is missing, all known baud-rates can be tested until the connection is established.
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DS2 series Instruction manual b. Scanning suspension command - 0x44 (‘D’ ASCII) Momentary suspends the scanning and passes the control to the host. Host sends: 0x02 0x01 0x44 0x03 0xBA 0x02 0x01 0x64 0x03 0x9A DS2 responds: The following figure is similar to the previous one with the difference that the scanning now does not re-start automatically after receiving the command (see point 9). answer 0x64 command 0x44 c.
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Instruction manual DS2 series d.
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DS2 series f Instruction manual Remote configuration writing - 0x48 (‘H’ ASCII) Saves in the DS2 non-volatile memory the binary information of the remote configuration. Host sends: 0x02 0x08 rrrrrrr 0x48 0x03 x DS2 replies: 0x02 0x01 0x68 0x03 0x96 where: rrrrrrr = 7 bytes with the remote configuration status (see Synchronism packet) x = checksum (complement to one of the Length, Type and Data field bytes sum) g.
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Instruction manual DS2 series i. Firmware release reading command - 0x4B (ASCII ‘K’) Reads the firmware release. Host sends: 0x02 0x01 0x03 0x4B 0xB3 DS2 replies: 0x02 0x0B vvvvvvvvvv 0x6B 0x03 x where: vvvvvvvvvv = 10 ASCII codes with the firmware version x = checksum (complement to one of the Length, Type and Data field bytes sum) j. Dip-switch reading command - 0x4C (ASCII ‘L’ ) Reads the dip-switch status.
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DS2 series Instruction manual l. PNP/NPN output piloting command - 0x4E (‘N’ ASCII) Turns on and/or turns off the PNP/NPN output. Host sends: 0x02 0x02 o 0x4E 0x03 x DS2 replies: 0x02 0x01 0x03 0x6E 0x90 where: o = 1 byte with the PNP/NPN output status (0 off, 1 on) x = checksum (complement to one of the Length, Type and Data field bytes sum) m. Analogue output piloting command - 0x4F (‘O’ ASCII) Sets the analogue output level.
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Instruction manual DS2 series 8. DIAGNOSTIC FUNCTIONS AND LED INTERFACE ERROR SIGNALLING 8.1. Device status visualisation The operator can verify the device functioning status using the three LEDs present the receiver unit and the one present on the emitter unit. The meaning of the LEDs present of the receiver unit (RX) depends on the light grid operating mode. RECEIVING UNIT (RX) Signalling Status - No power supply. - Microprocessor in the reset condition.
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DS2 series Instruction manual 9. CHECKS AND PERIODICAL MAINTENANCE The following is a list of recommended check and maintenance operations that should be periodically carried out by qualified personnel. Check that: • The operating distance and the alignment of the two units conforms to the indications given in section 2 “Installation mode” and section 10 “Technical data”. • The DS2 device and external electrical connections are not damaged.
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Instruction manual DS2 series 10. TECHNICAL DATA DS2-05-07-xxx-JV DS2-05-25-xxx-JV 24 Vdc ± 20% 250 mA max without load 1 switching output; load max 10 kΩ load min 100 Ω 1 analogue output ; 0-10 V (∆Vmax. 2%) Power supply: Consumption of emitter unit: Outputs: Output current on switching output: 100 mA; short-circuit protection -1.5 Vmax of the power supply at T=25°C See table “Response time” below Infrared (880 nm) 12 mm 35 mm ± 6 mm ± 22.5 mm 6 mm 22.
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DS2 series Instruction manual 11. LIST OF AVAILABLE MODELS Model Optics interaxis (mm) DS2-05-07-015-JV DS2-05-07-030-JV DS2-05-07-045-JV DS2-05-07-060-JV DS2-05-07-075-JV DS2-05-07-090-JV DS2-05-07-105-JV DS2-05-07-120-JV DS2-05-07-135-JV DS2-05-07-150-JV DS2-05-07-165-JV 6.75 6.75 6.75 6.75 6.75 6.75 6.75 6.75 6.75 6.75 6.75 DS2-05-25-045-JV DS2-05-25-060-JV DS2-05-25-075-JV DS2-05-25-090-JV 25 25 25 25 Length of controlled area (mm) a x b (mm) h (mm) N°.