Givi Misure VISION 518 User manual

User Manual
Digital Readout
V
VI IS SI IO ON N 5 51 18 8
www.givimisure.it

USER MANUAL DIGITAL READOUT VISION 518
MT02_A31_B_VI518_GIVI_ENG rev. A Pag. 2/32
TABLE OF CONTENTS
PRELIMINARY REMARKS p. 3
INSTALLATION p. 4
DIMENSIONAL SPECIFICATIONS p. 5
CONNECTIONS p. 6
KEY - MESSAGES AND SIGNALING p. 7
DATA AND PROGRAMS RETENTION p. 8
STANDARD FUNCTIONS
SELECTING A STANDARD FUNCTION p. 9
SCALE ZERO REFERENCE (REF) p. 9
SELF-TESTING
p. 10
ABSOLUTE/INCREMENTAL COUNTING p. 11
POSITION RESET/PRESET p. 11
MEMORY CLEARING F 00 p. 12
MM/INCH CONVERSION F 11 p. 13
MIDPOINT CALCULATION F 15 p. 13
INVERSION OF COUNTING DIRECTION F 22 p. 14
LOAD POSITION PRESET F 23 p. 14
DISABLING THE AUTOMATIC REF SEARCH F 24 p. 15
COUNTING MODE F 25 p. 16
LINEAR CORRECTION F 30 p. 17
RADIUS/DIAMETER CONVERSION F 34 p. 18
VARIABLE RESOLUTION F 36 p. 19
SEXAGESIMAL DEGREES READING F 37 p. 19
ANGULAR READING F 38 p. 20
RELAY OUTPUTS ACTIVATION F 40 p. 21
SETTING TIMED RELAY OUTPUTS F 41 p. 22
SETTING INTERVENTION POSITIONS F 42 p. 23
RS-232 SERIAL OUTPUT p. 27
ENABLING THE AUTOMATIC TRANSMISSION OF POSITIONS F 55 p. 28
SETTING SSI PARAMETERS F 98771 p. 29
ADDITIONAL INFORMATION
TECHNICAL CHARACTERISTICS p. 30
WARRANTY TERMS p. 31

USER MANUAL DIGITAL READOUT VISION 518
MT02_A31_B_VI518_GIVI_ENG rev. A Pag. 3/32
GIVI MISURE would like to thank you for purchasing the programmable digital readout
MICROCOMPUTER
and confirms the excellent choice made.
Thanks to a powerful microcontroller, the instrument is completely programmable by
keyboard. This means that VISION can be optimized with a number of specific functions
for any type of machine tool.
PRELIMINARY REMARKS
Disposal of waste electrical and electronic equipment (WEEE)
European Council Directive 2002/96/EC
The use of the WEEE symbol indicates that this product may not
be treated as household waste. If this product is disposed
correctly, you will help to protect the environment. For more
detailed information about the recycling of this product, please
contact your local authority, your household waste disposal
service provider or the retailer where you purchased the product.

USER MANUAL DIGITAL READOUT VISION 518
MT02_A31_B_VI518_GIVI_ENG rev. A Pag. 4/32
W A R N I N G !
It is forbidden to switch on the instrument unless the machine on which it
is installed conforms to 2006/42/EC Directive.
All of the equipments connected to the instrument must have insulation
characteristics in compliance with the regulations in force.
The instrument can be installed only by specialized personnel, following
the instructions provided by the Manufacturer.
It is strictly forbidden to intervene on the instrument while it is powered
from the mains power supply or by other devices.
POWER SUPPLY 230 Vac - 50/60 Hz (110 Vac or 24 Vac on request). We recommend
the use of a mains power supply provided with an input filter. The
power distribution network to which the instrument is connected must
be equipped with a sectioning device in compliance with the
regulations in force, positioned close to the instrument.
PREVENTION To avoid fires or explosions, the instrument should not be used in the
presence of inflammable gases, solvents, explosives, etc.
PANELS They can be removed only by specialized personnel, after
disconnecting the power supply.
INSTALLATION The measuring systems (optical scale, rotary encoder, etc.) must be
installed following the instructions provided by the Manufacturer.
CLEANING The front panel can be cleaned only after disconnecting power supply,
using a moist cloth. The instrument is not protected against liquid
penetration. DO NOT USE SOLVENTS.
MAINTENANCE Not required.
 In case of accidental or momentary mains voltage drops, the instrument does NOT
provide wrong and potentially dangerous information. When switched on again, the
instrument signals the occurred anomaly and requires the zero reference search
(REF).
INSTALLATION

USER MANUAL DIGITAL READOUT VISION 518
MT02_A31_B_VI518_GIVI_ENG rev. A Pag. 5/32
DIMENSIONAL SPECIFICATIONS
DRILLING TEMPLATE: 92 x 45 mm
140
96
48
10
48
96 10
140
48

USER MANUAL DIGITAL READOUT VISION 518
MT02_A31_B_VI518_GIVI_ENG rev. A Pag. 6/32
INCREMENTAL ENCODER INPUT
CONNECTIONS 1 2 3 4 5 6 7 8 9 10 11 12 13
TERMINAL BOARD P.S. P.S. C1 NA1 C2 NA2 + V 0 V LOAD
QUOTA / B A Z
ABSOLUTE (SSI) ENCODER INPUT
CONNECTIONS 1 2 3 4 5 6 7 8 9 10 11 12 13
TERMINAL BOARD P.S. P.S.. C1 NA1 C2 NA2 + V 0 V LOAD
QUOTA CK CK D D
LEGEND:
P.S. = Power supply 230 Vac ± 10% 50/60 Hz
(optional 110 Vac 60 Hz – 24 Vac 50/60 Hz)
C1 = Relay 1 common contact
NA1 = N.O. Relay 1 contact
C2 = Relay 2 common contact
NA2 = N.O. Relay 2 contact
+ V = Encoder power supply output 12 V / 05 V
0 V = 0 V Encoder power supply
LOAD = Load position input (connect an N.O. contact between pin 9 and pin 8)
/ = Reserved
B = Encoder channel B input (for mono-directional sensors, close at 0 V)
A= Encoder channel A input
Z = Encoder reference signal input
CK = SSI absolute encoder clock+ input
CK = SSI absolute encoder clock- input
D = SSI absolute encoder data+ input
D= SSI absolute encoder data- input
 Connect the cable’s shield to the ground.
The maximum capacity of the relay contacts is 230 Vac 3A.
CONNECTIONS

USER MANUAL DIGITAL READOUT VISION 518
MT02_A31_B_VI518_GIVI_ENG rev. A Pag. 7/32
The following keys and symbols are used in this manual, with the following meaning:
KEY USED TO RESET THE AXIS AND TO CLEAR THE OPERATION IN
PROGRESS
KEY USED TO SELECT DIGITS DURING DATA SETTING
KEY USED TO SELECT NUMERICAL VALUES (from 0 to 9) DURING
DATA SETTING
KEY USED TO SELECT THE ALGEBRAIC SIGN
ALSO USED TO CHANGE THE OPTION DISPLAYED
CODED FUNCTIONS KEY
(TO BE USED TOGETHER WITH A NUMBER)
KEY USED TO CONFIRM DATA OR SELECTIONS
KEY USED TO SELECT THE ABSOLUTE/INCREMENTAL COUNTING
KEY USED TO RECALL THE ZERO REFERENCE SEARCH
FLASHING VALUE
The instrument provides a series of visual signals to support the user during configuration
and use. When pressing a key, messages appear on the display, according to the
operation/function (see this manual). Finally, the instrument signals the activation or the
predisposition to execute a function. The flashing display, in fact, indicates that the
function is in progress; when the display has a fixed light, the function has been
completed.
Wrong operations are signaled with the following message:
E r r o r
that temporarily appears on the display to inform the operator that the entered key is not
compatible with the current operation.
In case of “overflow” error, i.e. the number of digits displayed is greater than the instrument
counting capacity, the error is shown on the display as:
- - - - - - - -
To exit this situation, see the “Position Reset/Preset” paragraph.
KEY - MESSAGES AND SIGNALING

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When the mains power supply is disconnected, the instrument can retain in its memory all
the data and programs set.
When powered off, the instrument can also store the last axis counting position.
To delete all the operation settings (e.g. counters resetting) see function F 00.
 The instrument, both in ABS and INC mode, cannot consider shifts of the carriage
made whenever the mains power supply is disconnected (due to inertia, manual
maneuvers, or thermal expansion). Whenever any of the above occurs, the position
shown in the display is unreliable; it does not represent the new position of the
carriage but the one it had prior to power disconnection.
 To avoid errors, we recommend to perform the zero reference (REF) search
whenever the operator is not sure about the correctness of the displayed position,
and whenever the same is essential for the current machining (e.g. when using
relay outputs).
DATA AND PROGRAMS RETENTION

USER MANUAL DIGITAL READOUT VISION 518
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STANDARD FUNCTIONS
To recall a function, press the F key, use the +/- key to select the code of the desired
function and confirm it with EXE.
 At any time, it is possible to quit the operation by pressing the CLR key.
INCREMENTAL ENCODER INPUT
The scale zero reference (REF) can be considered as a precision micro-contact, generally
located in the middle of the measuring length. Its position, with reference to the
geometrical trim of the machine, is unchangeable over time. This could be modified only if
the scale is disassembled (e.g. due to service, maintenance or substitution). In this case,
the operator will have to set the references again.
The zero reference can be searched automatically whenever the instrument is turned on,
or manually:
A) Automatically. Whenever a momentary or prolonged interruption of power
supply (voluntary or not) occurs, the instrument proposes to the operator the
zero reference (REF) search to avoid the displaying of incorrect positions
(LAST POSITION). This is the case, for instance, of a sudden power failure
while the carriage is moving (since it would continue to move due to inertia),
or of the movement due to thermal expansion (for example caused by a
temperature drop during the night), or of involuntary or accidental shiftings
(while cleaning the machine). The operator is therefore warned against a
potential risk. He can decide to perform the zero reference (REF) search, by
passing the carriage on the corresponding points, or he can cancel the
operation, pressing the CLR key. If the scale does not have the zero
reference, press the CLR key. In this case, it is advisable to check the
accuracy of the positions reached.
B) Manually. Whenever the operator deems it necessary, he can verify the
position reached by the carriage, performing the zero reference (REF) search
manually on the axis.
SELECTING A STANDARD FUNCTION
SCALE ZERO REFERENCE (REF)

USER MANUAL DIGITAL READOUT VISION 518
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Example:
Press r E F
The display flashes and requires the operator to perform the zero reference (REF) search.
With this function, it is possible to set the 0 value in correspondence to the zero reference
position. In order to reset the absolute and incremental counters:
Press r E F
The axis display flashes. By passing with the carriage on the corresponding point, the 0
value will be displayed.



The instrument will not accept any setting until the axis has terminated the zero
reference (REF) search, displaying an error message at the pressure of any key
(except CLR). The operator can then decide to:
A) Complete the zero reference search;
B) Cancel it because unnecessary.
ABSOLUTE (SSI) ENCODER INPUT
In the instruments with absolute (SSI) encoder input, the zero reference search function
allows to synchronize the displayed position and the absolute position of the encoder.
Press 1 23.45
The absolute position of the encoder will be displayed.
A general test of the instrument is performed automatically whenever it is turned on,
checking the validity of the stored data. If no problem is detected, the following wording will
appear on the display:
tESt
no Err
SELF-TESTING

USER MANUAL DIGITAL READOUT VISION 518
MT02_A31_B_VI518_GIVI_ENG rev. A Pag. 11/32
The point positioned on the right of the display indicates the counting mode set. More
specifically, if the point is
TURNED ON = AXIS IN ABSOLUTE COUNTING MODE (ABS)
TURNED OFF = AXIS IN INCREMENTAL COUNTING MODE (INC)
To switch the axis from one counting mode to the other, press the ABS key; the point turns
on (or off) and signals that the axis is in ABS (or INC).
The counting system is managed by the instrument, which has a dual internal counter
(ABS/INC). The information relating to the axis movement updates simultaneously both
counters. The information entered by the operator, instead, only affects the counter of the
selected counting system. For instance, it is possible to reset the ABS counter in a given
point (ORIGIN) and operate in INCREMENTAL counting (that is handier and more
versatile to use). The operator can then carry out all the resetting, pre-selections,
functions, etc. required by the machining process, since he can return to the ABS counting
at any time to find out the absolute position of the carriage and, therefore, the ORIGIN he
had set.
Regardless of the selected counting mode, ABS or INC, to reset a value, proceed as
described below.
Press
123.45
Press and the value will be reset 0 .00
To enter a value (preset), e.g. 113.03, on the axis,
Press the first digit will flash XXXXX.XX
Press to select the second digit 0XXXX.XX
Press to enter the value (0-9) 0XXXX.XX
ABSOLUTE/INCREMENTAL COUNTING
POSITION RESET/PRESET

USER MANUAL DIGITAL READOUT VISION 518
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Use and to set the other digits 000113. 0
Press to confirm the entered value 113.03
Note. During the position preset, the following keys can be used:
to set a negative value -113.03
to quit the preset operation and return to displaying the previous
position.
The preset value should have a number of digits not exceeding the instrument counting
capacity (8 digits, including negative sign and decimal point), therefore:
from -999999.9 to 999999.9 for 100 µm resolution
from -99999.99 to 99999.99 for 10 µm resolution
from -9999.999 to 9999.999 for 1 µm resolution
The F 00 function can be used to delete the data entered by the operator, either entirely or
selectively. These data are stored in different areas.
Press 0 0 and, if required
With the +/- key, select the type of data to be deleted.
C tot To delete all the stored data.
C Corr To delete data relating to the linear correction, that will be reset to the
value 1 (i.e. no correction).
C data To delete positions and references, both absolute and incremental.
C Prog To delete the relay programs.
Press to execute the function
MEMORY CLEARING F 00

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Press 1 1 M i L L
Press to select I n c h
Press to confirm the selection.
The selected unit of measurement is signaled by the position of the decimal point on the
axis. If the conversion is not compatible with the operational conditions of the instrument,
an error message will appear on the display.
With this function it is possible to easily identify the midpoint between two points A and B
of a workpiece (distance between holes centers, geometrical figures, workpiece sides,
etc.). To execute the function:
Reach the first position A, moving the carriage along the axis. Let us suppose that in that
position the axis display will show the value 30.00 (which is not necessary to reset).
Press 1 5 30.00
Note. The decimal point of the position will flash.
Move to the second position B. Let us suppose that in that position the display will show
the value 52.22.
Press
A position will appear on the display. This will correspond to the exact halfway (rounded, if
necessary) between the two positions A and B. It will be sufficient to move the carriage to
the 0.00 position and it will be placed in the required midpoint.


This function can be carried out only if the axis is set for INCREMENTAL
counting. Vice versa, the instrument does not complete the calculation, as this
would interfere with the ABSOLUTE counting settings.
MM/INCH CONVERSION F 11
MIDPOINT CALCULATION F 15

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Turn on the instrument and wait for the end of the self-testing cycle. The display remains lit
up and shows the zero reference (REF) search. Press CLR to enable the axis counting.
Manually move the carriage and evaluate if the axis needs to be inverted (the direction in
which it advances depends on the scale’s installation).
If the axis has to be inverted,
Press 2 2 d i r -



The dash position (-) to the right or left of “dir” does not reflect the movement
direction. The shift from dir- to -dir simply indicates to the operator that the inversion
of direction has been executed.
Press (because the axis has to be inverted) - d i r
Press the selection is confirmed
and the axis is inverted XXXXXX.XX
After having confirmed with the EXE key, the instrument exits programming (the display
shows the position). In case of wrong settings, press the CLR key and repeat the operation
from the beginning.
With function F 23, it is possible to set the load position. The load position is a predefined
counting value that can be recalled at any time.
To enter the position (preset), e.g. 50.00, on the axis:
Press 2 3 the instrument requires to
enter the value (position) XXXXX.XX
Use and to enter the value 000050. 0
Press to confirm it 5 0.00
INVERSION OF COUNTING DIRECTION F 22
LOAD POSITION PRESET F 23

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Note. During the position preset, the following keys can be used:
to set a negative value - 00050.00
to quit the preset operation and maintain the previous position set.
Regardless of the selected counting mode, ABS or INC, it is possible to recall the load
position, following the procedure described below.
Press the first digit will flash XXXXX.XX
Press and the value will be set (preset) 5 0.00
 It is possible to recall the load position also with an external contact, connected to
the load position input (see connections).
With function F 24 it is possible to disable the automatic zero reference search (REF) that
is performed whenever the instrument is turned on.
Press 2 4 r E F yes
Press to select r E F no
Press to confirm the selection.
 Function F 24 is available for instruments with incremental encoder input.
DISABLING THE AUTOMATIC REF SEARCH F 24

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This function allows to select the counting mode of the A and B channels of the encoder.
The counting mode can be direct, double, quadruple or mono-directional.
Press 2 5 C n t n 1
The display will show the direct counting mode (n1).
Press to select the double counting mode
(n2). C n t n 2
Press to select the quadruple counting
mode (n4). C n t n 4
Press to select the mono-directional
counting mode (A). C n t
A
Press to confirm the desired selection.
COUNTING MODE F 25

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Machining errors can derive from geometrical defects of the machine due to wear, lack of
linearity of the guides, coupling clearances between carriage and guide, badly distributed
weights, etc. If these errors are linear, i.e. proportional to the movement executed, they
can be compensated with the linear correction function.
The correction factor CF is calculated by the operator with the following formula:
MEASURED DIMENSION (measured with accuracy)
CF = ------------------------------------------------------
DIMENSION AS PER DRAWING
Let us suppose that a machining has been performed, moving the axis by 400.00 mm
(value shown on the display), but an error has been detected (positive or negative). For
instance, the measured piece is either longer or shorter than intended. That means:
A) 400.20 mm the workpiece is longer with an error of 200 µm
B) 399.88 mm the workpiece is shorter with an error of 120 µm
in case ACF = 400.20 : 400.00 = 1.0005
in case BCF = 399.88 : 400.00 = 0.9997
To compensate for these errors,
Press 3 0 1 .000000
Note. The first digit on the display will flash.
To enter the correction factor on the axis,
use and to enter it 1 .00000
1 . 0 0 0 5 1 .000500
or:
0 . 9 9 9 7 0 .999700
All the movements performed on the axis will be compensated with the CF entered. At the
end of the procedure, the display will be enabled for counting.
LINEAR CORRECTION F 30

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The linear correction has the following characteristics:
1. it is permanently stored (it becomes a mechanical component of the axis);
2. it can always be modified, entering other CF values. The permitted values are:
MIN = 0.000001
TYP = 1.000000
MAX = 9.999999
3. it can be disabled entering CF = 1 or deleting the linear correction with the function
F 00;
4. it has priority over preset, reset, etc. functions.


The correction must be entered before the other functions (which otherwise
would be modified).
The function can be used to select the required reading mode.
Press 3 4 r A d .
Press to select °d i A .
Press to confirm the selection.
After having confirmed with the EXE key, the display will be enabled for counting.
While choosing the reading mode, consider that:
A) RADIAL READING: the display shows the same value of the carriage
movement. This is the most common reading mode.
B) DIAMETRAL READING: the display shows a value that is the double of the carriage
movement. This reading mode is typically used for the
transversal axes of lathes. In fact, if the tool advances by
1 mm, the workpiece diameter decreases by 2 mm.
 1. The unit of measurement can be switched from MM to INCHES and vice versa in
both reading modes.
2. A permanently lighted point on the first digit signals that the axis is set in diametral
reading.
3. Any previous RELAY OUTPUT setting is disabled since it is altered by the reading
mode selected. On the contrary, the reference positions are retained.
RADIUS/DIAMETER CONVERSION F 34

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The instrument shows on the display the resolution initially programmed by the
Manufacturer (this corresponds to the resolution of the measuring system). If machining
can be facilitated by a lower resolution (e.g. roughing machining), the operator can
decrease it.
Let us suppose to have an optical scale with 10 µm resolution. If the operator wants to
operate with a 100 µm resolution:
Press 3 6 r 0 .00
Press to select the desired resolution r 0 .0
Press to confirm the selection.
 1) At any pressure of the +/- key, the decimal point shifts to the lower resolution.
2) The variable resolution set will be maintained also after turning off the instrument.
3) Function F 36 does not modify the number of decimals displayed; the decimals
considered unnecessary will be kept at 0.
The angular reading, expressed in sexagesimal degrees, can be selected with the function
F 37.
Press 3 7 d M S no
Press to select d M S yes
Press to confirm the selection.
On the axis display set in angular reading, degrees will be expressed as: DDD.MM.SS.
The resolution depends on the number of encoder pulses (PPR).
VARIABLE RESOLUTION F 36
SEXAGESIMAL DEGREES READING F 37

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On request, the instrument can be configured by the Manufacturer to operate in angular
reading, in order to be used with a rotary encoder. The resolution depends on the number
of encoder pulses (PPR).
The instrument calculates exactly the following formula:
360° and selects, among the available resolutions, the one closest to the
PPR x4 calculated value.
POSSIBLE RESOLUTIONS: 1° - 0.5° - 0.2° - 0.1° - 0.05° - 0.02° - 0.01° -
0.005° - 0.002° - 0.001°
The highest possible resolution is 3.6 seconds of an arc (0.001°), that can be obtained with
an encoder having 90,000 PPR.
If the instrument has been configured by the Manufacturer in angular reading, the operator
can select the reading mode:
A) ANGLE from 0° to 360°.
B) ANGLE from 0° to 180° in positive field and from -180° to 0° in negative field.
To switch from one reading mode to the other,
Press 3 8 0 - 3 6 0
Press to select 0 - 1 8 0
Press to confirm the selection.
 1. The selection is stored permanently.
2. All the functions linked to the linear reading cannot be executed, e.g.:
MM/INCH - LINEAR CORRECTION
3. The instrument will never incur into an “overflow” error because counting is reset
after each rotation (or half-rotation) of the encoder.
ANGULAR READING F 38