VELMEX VRO Reference Manual

Encoder readout

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Introduction

The Velmex Read Out (VRO) is a compact 1 and

2 axes digital readout for linear and rotary

incremental encoders. The VRO uses the latest

OLED display and DSP microcontroller

technology for a

high performance

digital position readout.

Designed for differential type encoders, the VRO

is also fully compatible with sngle ended

encoders.

Precautions

Readout and

ventilated area. Do not use in a wet, dirty, or explosive environment.

In industrial environments, repackaging into a

is required.

Do not connect or disconnect encoder while

encoder cables a minimum of 2" (50 mm) from any power or motor

control cables . Do not alter cables in any way without first consulting

Velmex.

Only power

VRO

not connect/disconnect power plug on side of

VRO may not power-up correctly.

WARNING:

DO NOT USE POWER ADAPTER OUTDOORS OR IN WET

ENVIRONMENTS

VRO

Encoder Readout

Reference Manual

Version 1.30

ultra-precise

CAUTION

power adapter should be operating in a well

on/off by toggling

Document #

VRO RM

NEMA

VRO

is powered. Keep

power to power adapter. Do

VRO

to power on/off,

-E1

6-18-25

grade enclosure

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Summary of Contents for VELMEX VRO

Page 1 Encoder Readout Reference Manual Version 1.30 Introduction The Velmex Read Out (VRO) is a compact 1 and 2 axes digital readout for linear and rotary incremental encoders. The VRO uses the latest OLED display and DSP microcontroller technology for a...
Page 2 Table of Contents Appendix A Precautions......1 Low Display Res Scaling Tables.....35 Features......3 Appendix B Features (Views)....4 High Display Res Scaling Tables....36 RS-232 Port......5 Appendix C Encoder Connection...5 Display Messages........37 Remote Connection....5 Encoder Cable....6 Power-up......7 Setup/Encoder Type....8 Linear encoder Setup/Linear Resolution..9 Rotary encoder Setup/Cycles per Rev..10 Setup/Device.....11...
Page 3 OLED display  Remote Send, Clear, Unit button Inputs  Programmable data output format  1 or 2 axis (VRO-1, VRO-2)  User settable scaling, decimal place, axis and unit labels  Pass through mode for custom display messages  All I/Os ±15,000 volt ESD protected ...
Page 4 Display Send Button Status Light Clear Button (Save/Exit in Setup) On= Primary Unit Displayed Unit Button (Change in Setup) (On= Encoder 1 in Setup) (End in Setup) VRO-1 VRO-2 Encoder 1 Connection (X Axis) RS-232 Opt. Earth Computer Ground Interface...
Page 5 Connections Pin Assignments: RS-232 Port 1 N/C 2 Tx 3 Rx 5 Gnd 9DSUB Socket The RS-232 port will connect directly to a COM port of a PC with a straight through 9 pin serial cable or to a standard USB converter/cable. 9 N/C N/C = No Connection Pin Assignments:...
Page 6 Connections Encoder Connector (Encoder/cable end shown) Encoder Cable 15 Dsub Male Signal ELGO green violet yellow A’ Differential blue white black Encoder B’ brown yellow green +VDC +5 @ brown white 5 ma yellow green brown Case white orange NOTE: To Invert direction on Diﬀerential Encoders swap A and A’...
Page 7 Power-up Positioning Hold “S” button down when powering* to toggle splash screen OFF/ON** Hold “U” button down when powering Hold “C” button down when powering* for pixel test: to skip splash & Start screen End of Power-up display Pixel test display New Ver.
Page 8 Front Panel Setup Encoder Set Encoder Type Pick E-# to Set Follow the cable to the device to determine the type. If the cable ends at the carriage/slider of the device it’s a linear encoder. If the cable originates from the back of a motor then it is a Press “S”...
Page 9 Front Panel Setup Encoder Type: Linear Linear Resolution Press “C” button to ________ Ln Res: ________ change Linear Resolution 0.001 mm ELGO & Encoders 0.002 mm 0.005 mm 0.010 mm NOTE: Linear Resolution must be set to match the resolution of the encoder. The resolution is 0.001 mm for ELGO , SIKO, and...
Page 10 Front Panel Setup Encoder Type: Rotary Cycles / Revolution Press “C” button to ____ Cycles/Rev: ____ change Cycles/Revolution* * Cycles/Revolution can be found in the part number of the encoder. Typical ENCODER PRODUCTS part number: Part# 15T-01 -0400N5 -F00 Cycles/Rev Cycles/Rev ( ) can determined empirically by temporarily setting to “____”...
Page 11 Front Panel Setup Encoder Type: Rotary Device Press “C” button to change Device ________ Device: ________ Ld Screw Rot Tbl Ld Screw Screw Drive Actuator with Rotary encoder Rot Tbl Worm Gear Motor with Rotary Table with Rotary encoder with Rotary encoder 1:1 Gear Ratio on motor Press “S”...
Page 12 100 mm Rotary Encoder & Lead Screw 100 mm is for an UniSlide* BiSlide** Adv/Rev encoder/motor mounted XSlide*** direct drive on the Velmex 0.025 in BiSlide Belt Drive (100 mm 1.0 mm adv/turn) 0.05 in 2.0 mm 0.10 in 0.20 in P2.5...
Page 13 Front Panel Setup Encoder Type: Rotary Device: Rotary Table Gear Ratio Press “C” button to change Gear Ratio ____ Gear Ratio: ____ 90:1 72:1 36:1 18:1 Rotary Encoder & Rotary Table Model # Gear Ratio B5990 90:1 B4872 72:1 B4836 36:1 B4818 18:1...
Page 14 Front Panel Setup Encoder Type: Linear & Rotary Direction Press “C” button to change Direction Direction: Std Direction: Std Positive Positive Worm Gear Positive Rotary Table with Rotary encoder on motor Screw Drive Actuator Motor with with Linear or Rotary encoder Rotary encoder Press “S”...
Page 15 Front Panel Setup Encoder Type: Linear & Rotary Display Resolution Press “C” button to change Display Resolution High Disply Res: High Maximum Decimal Places Displayed Units High* Low** in (inches) mm (millimeters) o (degree) rv (revolutions) * Refer to Appendix B for more information ** Refer to Appendix A for more information Press “S”...
Page 16 Front Panel Setup Encoder Type: Linear & Rotary Primary Unit Press “C” button to change Primary Unit Prim Unit: Std Std Primary Units For Linear Encoders For Lead Screws with x.x mm Adv/Rev For Lead Screws with x.xx in Adv/Rev For Rotary Tables Inv Primary Units For Linear Encoders...
Page 17 Firmware Version Number Version X. Version X. Version X. Press “U” button to Press “C” button to End Setup start Press “S” button to Set Serial port Baud rate Display mode Set Emulation mode 0.000 mm Baud: 9600 0.000 mm Emulate: VRO...
Page 18 QC10V change Emulation < RESET > setting VRO is the standard setting QC10V setting changes the Serial port stop bits from 1 to 2 < RESET setting will erase all settings saved in memory > Press “S” button to Save and exit this menu...
Page 19 Front Panel Setup Serial Set Baud 9600 Baud: 9600 Press “C” button to 19200 change Baud rate 38400 setting 57600 NOTE: Data bits are , Parity is one, and Stop bits is normally Press “S” button to Save and exit this menu Baud: 9600 * New for Version 1.30...
Page 20 Display Mode Count Display Mode Unit Label 10.000 mm -4.001 mm Axis Label Clearing Count ( Press the “C” button to zero the encoder count 0.000 mm Clearing Count ( Press the “C” button, the second line of the display will show the zero submenu: 0.000 mm 0 XY Press the “S”...
Page 21 Display Mode Send Count to Host Computer Press the “S” button to Send the display count out the Serial port. The status light will flash for duration of the send. For more information on the Send format refer to the “setO” command. There is user resettable Send Counter that counts the number of Sends.
Page 22 Enable On-Line/Setup mode with echo "off” Simulate “C” button press Status request commands: Verify Readout's status, VRO sends "P" to host to indicate in Power-up mode Refer to the “Display Mode Commands” section for more information on the “E”, “F”, and “V”commands...
Page 23 The following commands are available when in Front Panel Setup Pick E-# to Set Simulate button 1 (”S”) press Simulate button 2 (”C”) press Simulate button 3 (”U”) press Status request command: Verify Readout's status, VRO sends "F" to host to indicate in Front panel set-up mode...
Page 24 BASIC, C, LabVIEW, MATLAB, etc. To put the VRO in the On-Line / Setup mode, the host must send either an " ", or " ". When the VRO receives an " ", or " " the On-line screen will be displayed, Display mode commands, and Display mode button inputs will be disabled.
Page 25 Send formatted display to host (same as “S” button) See “setO” command to configure format. Send count for # times “S” button pressed. The VRO sends count followed by a carriage return.
Page 26 Quit On-Line mode without backing-up changes. This is the same as the “Q” command except any settings that were updated will not be saved when the VRO is powered off. fpsetup Display Front Panel setup menu. This is the same as starting the setup...
Page 27 -232/ Communication On-Line / Setup Mode Commands PT[[ Start Pass-Through mode. When the is in Pass-Through mode all characters coming in the Serial port will get put directly on the display. A carriage return will advance to the start of the next line. There are 2 lines of 16 characters.
Page 28 -232/ Communication On-Line / Setup Status Request Commands Verify Readout's status, sends "S" to host to indicate in Setup mode Read state of buttons/inputs (value is 8 bit binary bits 2-6) returns: for no button pressed (bits 2-6=1) if “S” button down (bit 4=0) if “C”...
Page 29 Set Output format used by Send, v= 1,2,X,x,Y,y,U,C,L,<space> (max 100 char.) When the “S” button is pressed or the “S” command is used in Display mode the VRO sends the encoder count value based on the format of the script in the “setOv” command.
Page 30 -232/ Communication On-Line / Setup Set Commands All “set” commands must terminate with in a carriage return character (<Enter> key on most keyboards) or a comma. setAXv Set Axis label for encoder 1, v= any ASCII character setAYv Set Axis label for encoder 2, v= any ASCII character setUXv Set primary Unit label for encoder 1, v= any 2 ASCII characters setUxv...
Page 31 VRO-1 (one axis version) Format....2 Line x 16 Character VRO-2 (two axis version) Type.....OLED, Green VRO-1B (one axis version with tilt base) Contrast Ratio..2000:1 (readable in direct sunlight) VRO-2B (two axis version with tilt base) Character Height...9 mm (0.35”) VRO-1H (one axis version with hinge) Viewing Angle..160 degrees...
Page 32 Dimensions -1 / 6.87” 1.77” (174.5 mm) (45.0 mm) 4.27” (108.5 mm) 6.48” 1.89” (164.5 mm) (48.0 mm) Power Adapter (Shown without Plug) 2.86” (72.6 mm) 5.5 mm (type N) 2.5 mm ctr pin positive 70.86” (1800 mm) 1.40” (35.6 mm)
Page 33 Dimensions -1B / Hinge Tension Adjustment Tighten 6.87” (174.5 mm) 5.50” (140 mm) 0.84” (21.4 mm) 6.30" 3.50” (160 mm) (89 mm)
Page 34 By mail: Velmex, Inc. 7550 State Route 5 & 20 Bloomfield, 14469 Copyright 2013 Velmex Inc. All rights reserved. Velmex, the Velmex logo, UniSlide, and BiSlide are trademarks of Velmex Inc. All other trademarks are the property of their respective owners.
Page 35 Appen Display Res S a c ling T bles CPR= Cycles/rev DEC PT FOR I MAX OF DEC PT FOR MM & Rotary Ex e t these= P IMARY UNIT S CONDARY UNIT Exact C nv Multiplier Divisor Dec P t D s i play Multiplier Divisor Dec P t D s i play Ld S r w...
Page 36 Appen dix B HIGH Display Res Sca ling T bles CPR= Cycles/rev DEC PT FOR IN & MAX OF DEC PT FOR MM & Rotary P IMARY UNIT S CONDARY UNIT Exact C nv Multiplier Divisor Dec P t D s i play M ltiplier Divisor Dec Pt D s i play...
Page 37 A read/write check of ROM RAM error has occurred Not Settable ! Message when encoder setup was done from the serial port last. Front panel setup can not make changes unless the PC set this last VRO is cleared (set to defaults)