WOBIT MD150E User manual

P.P.H. WOBIT E.K.J OBER. s.c.
62-045 Pniewy, Dęborzyce 16
tel.(061) 22 27 422, fax.(061) 22 27 439
e-mail: [email protected]
www.wobit.com.pl
MD150E Instruction
Manual
Digital processing counter with display
for angle, velocity and distance measurement

MD150E –pulses and velocity counter (02.06.2014)
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Contains
1. Safety and assembly rules .................................................................................................... 3
2. Device description................................................................................................................ 4
2.1 Intended use and properties ..................................................................... 4
2.2 Description of connectors and front panel.................................................. 4
2.3 Power supply ........................................................................................... 5
2.4 Compatible devices .................................................................................. 5
2.5 Input signals –way of connection ............................................................. 6
2.6 Counter indications –pulses / cycles / velocity........................................... 7
3. Menu description ................................................................................................................. 8
3.1 MENU map .............................................................................................. 8
3.2 Example of parameter change .................................................................. 9
4. Counter configuration .......................................................................................................... 9
4.1 Inputs modes –Encoder / Up-Down / Step-Direction ................................. 9
4.2 Calibration of counted pulses .................................................................. 11
4.3 Measurement of pulses frequency (velocity) ............................................ 11
4.4 Filtration of input signals ........................................................................ 11
4.5 Resetting of pulses and cycles counter .................................................... 11
4.6 Record of counter state .......................................................................... 12
4.7 Relay outputs and operation modes ........................................................ 12
5. Password protection .......................................................................................................... 14
6. USB and RS485 Modbus interfaces...................................................................................... 14
6.1 USB interface......................................................................................... 14
6.2 RS485 (MODBUS-RTU) interface ............................................................. 14
6.2.1 Description of MODBUS protocol ....................................................... 15
7. Technical parameters ......................................................................................................... 16
Thank you for selecting our product!
This instruction will help you at correct service and accurate exploitation of described device.
Information included in this instruction were prepared with high attention by our specialists and is description of the
product without any responsibilities within the meaning of the commercial law. Based on the information should not be
inferred a certain features or suitability for a particular application. This information does not release the user from the
obligation of own judgment and verification. P.P.H. WObit E.K.J. Ober S.C. reserves the right to make changes without prior
notice.
Please read instructions below carefully and adhere to its recommendation
Please pay special attention to the following characters:
CAUTION!
Not adhere to instruction can cause damage or impede the use of hardware or software.

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1. Safety and assembly rules
Safety rules
•Prior to first start-up of the device carefully read the manual.
•Prior to first start-up of the device make sure all cables are properly connected.
•Provide appropriate working conditions, in compliance with the device
specifications (e.g.: power supply voltage, temperature, maximum current
consumption).
•Prior to any modifications of cables connections, disconnect power supply voltage.
•Dismantling of the indicator housing during guarantee agreement period results in its
invalidation.
Assembly recommendation
In the environments of unknown levels of interruptions it is recommended to use the following
means preventing against possible interruptions of the device operation:
•Ground or zero the metal rails on which instruments are mounted.
•Do not power the device from the same lines as high power devices without appropriate
network filters.
•Apply power supply, sensor and signal cables screening while screen grounding should be
connected only on one side as close to the device as possible.
•Use communication cables (USB) equipped with filters in the form of ferrite beads.
•Avoid routing control (signal) cables in parallel with or in close vicinity of power and supply
cables.
•Avoid close vicinity of devices generating high level of electromagnetic and/or pulse
interference (high power loads, loads with phase or group power regulation).

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2.Device description
2.1 Intended use and properties
MD150E is a multipurpose, programmable counter designed for counting pulses from incremental
encoder or other sources of square wave signals. MD150E can define signal frequency and scale
counted values into required unites (rpm, rps, mm, m, deg, etc.)
With two relay outputs the user is able to set thresholds as desired. MD150E is also equipped with
additional input for resetting counter state.
MD150E counter is very intuitive. Only one parameter is needed to scale number of counted pulses
to required unit.
MD150E is equipped in USB and RS485 MODBUS interfaces. USB enables direct connection between
processing unit and PC (record to csv file). RS485 interface with MODBUS-RTU protocol enables
communication with industrial devices like PLC or HMI.
Housing made of full aluminum profile guarantees excellent mechanical resistance to harsh external
conditions.
MD150E features:
Counting external pulses with frequency up to 2Mhz,
Power supply 12…36V DC or 230V AC (depends on version)
Can cooperate with any incremental enkoder, linear magnetic enkoder, other sources of
Step/direction signals etc.,
Scale of counting pulses to any unites,
Defining frequency of counted pulses,
Possibility of recording counted pulses –reconstructing counter state after turning on the
device,
Setting status of relay outputs based on set thresholds,
4 operation modes of relay outputs + additional cycle counter - it allows use in dose
application without additional controller,
Data transmission to PC (USB) or master device e.g. HMI panel, PLC (RS485 MODBUS-RTU).
2.2 Description of connectors and front panel
Front panel
LED1
- indicator of PK1 relay activation
LED2
- indicator of PK2 relay activation
ESC
- abortion, Reset (>3sec.)
DOWN
- next menu position/next parameter digit/
change of displaying mode
UP
- previous menu position / digit value increase /
change of displaying mode

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ENTER
- menu entry/confirmation of entered changes
Back panel
1
RST
Resetting input
2
B+
B+ counter input
3
B-
B- counter input
4
A+
A+ counter input
5
A-
A- counter input
6
+5V
Output +5V for sensor, max 500mA
7
485A
A signal of RS485 interface
8
485B
B signal of RS485 interface
9,10
PK1
PK1 (NO) relay contacts
11,12
PK2
PK2 (NO) relay contacts
13
V+
12-36VDC power supply (or +15V output
for ~230V power supply option)
14
GND
Ground
15,16
230V
Power supply 230V AC (230V version)
17
PE
Protective signal (230V version)
2.3 Power supply
MD150E counter is available in two versions of power supply –low voltage (12…36 VDC) and high
voltage ( 85…260V AC) supplied directly from mains electricity ~230V. For ~230V version on 13 (V+)
clamp is available +15V voltage, which can be used for supplying sensor.
12..36V DC Power supply
85..260V AC Power supply
Caution!
For ~230V supply version, before any connections you should disconnect the device from main
electricity.
2.4 Compatible devices
MD150E counter is designed for integration with optical encoders with square wave output. That
transducers are available in wide range of resolutions, versions of electronics, with connector or
cable. MD150E can be also integrate with magnetic linear encoders to measure linear displacement;
with motor drivers which generates Step/Direction signal or to count pulses from inductive sensors
etc.

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Encoders
Incremental encoders are designed for angle displacement measurement,
which means measurement of angle, number of rotation and angle
velocity. Using belt drive, cog wheel or friction wheel it is possible to
measure linear displacement.
Encoder allow to define position by counting pulses. It can also recognize
direction of movement due to phase shift of A and B channel (square wave signal).
Some encoders have C zero channel, which by each rotation indicates an absolute position. It can be
used for designation of zero position.
Linear magnetic encoders
Linear encoders are designed for direct measurement of linear
displacement. Incremental length measuring system consisting of read
head and magnetic tape. An example of sensor is GC-MK2 or GC-MK5
from WObit’s offer.
Proximity sensors, Area sensors
All sensors with output signal NPN or PNP can be connected directly to MD150E
counter to count number of this signals. For example this sensors can be used for
counting numbers of elements on a production line or for defining numbers of
rotation/ velocity of measuring wheel.
CLOCK/DIRECTION signals for controlling servomotors and stepper motor drivers
For controlling servomotors and stepper motor drivers often are used CLOCK/DIR signals. This signal
can be connected directly to MD150E counter, then it can be used for direct indication of motor
position/velocity.
2.5 Input signals –way of connection
MD150E counts pulses from two opt insulated A and B input channels + zeroing signal (RST). This
signals can be given asymmetrically (input + or –connected to sensor’s ground) as well as
symmetrically (straight signal and negation + and - inputs simultaneously). Most of rotary and linear
encoders give asymmetrical signal (differential) due to greater transmission resistance for industrial
noise. Simple proximity sensors usually give straight signal (without negation).
Level of transducers input signal depend on electronic standard. The most popular is O.C. (voltage
supply +24 V, +12 or +5 V). This standard can’t be used for long distances with high signal frequency.
At distances up to 100 m and high rotational velocity of transducer usually is used Line Driver
standard (RS422). At this standard at transducer are available also A and B signal negations. Then
should be used proper cable with correct impedance (signal send in pairs, e.g. A+/A-).
MD150E has fully opt insulated differential counter inputs, on which can be given signals in range
5..24V (between „+” and „-”clamp). It can be integrated directly with most of sensors (supplied
from +5V as well as +24V).
Owing to input signal on opt-isolator is internally formed in square course with proper slope (for
correct pulse identification). As pulse generator can be used almost any element with slow increasing
pulse like optical sensor or proximity sensor. In case of electromechanical pulse sources, the

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condition of correct operation is the elimination of joint vibration effect, causing pulse
multiplication.
Way of connection external signals to MD150E counter depends on used sensor output type. Below
are shown exemplary ways of connection.
Picture. 1 Connection of +5V encoder with output RS422 type
(Line driver).
Picture. 2 Connection of +5V encoder with output TTL type.
Picture. 3 Connection of +12V..+24V encoder with output
Open Collector (OC) or Push-Pull (PP) type.
Picture. 4 Connection of +12V..+24V encoder with output
Push-Pull and Line Driver type.
Picture. 5 Connection of sensor with NPN output.
Picture. 5 Connection of sensor with PNP output.
2.6 Counter indications –pulses / cycles / velocity
MD150E can display one of three measuring values:
Value of pulses counter
Value of cycle counter–value is preceded by L
Pulses frequency (velocity) –value is preceded by U
You can switch between next values apart from the MENU, using UP/DOWN buttons.
There is an additional option to set default counter indications after its activation (MENU-> 11. DISP).

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Value of pulses counter = counted pulses/calculator (DIV parameter) + offset (OFFS parameter)
Value of cycle counter = pulses counter / P1 setting (only at 0 and 3 operation modes)
3.Menu description
3.1 MENU map
000000 -> displaying of current measurement value
Menu entry
Change of displayed value:
No sign: Pulses
U sign: velocity
L sign: cycles
(>3 sec.) Reset of pulses and
cycles counter
1. P1 -> Menu
Next/previous
parameter
parameter selection
Digit selection
Change value
Parameter edition
1.
P1
Settings control relays
Relays
± 999999
2.
P2
Settings control relays
± 999999
3.
PTIM
Time of relays activation (depends on PMOD)
0…999999 ms
4.
PMOD
Relays operations mode
mode 0 / 1 / 2 / 3 / 4
5.
DIV
Pulses calculator (divider) into required unit
Measurement
± 9999.99
6.
OFFS
Offset of initial counter value
± 999999
7.
IN
Signal input mode of counter
A-b / U-d / d-C
8.
FILT
Filtration of input signals
on / oFF
9.
DP
Number of decimals of the result
0…5
10.
SPD
Unit of velocity counter
1.Sek / 2. Min /3. Hour
11.
DISP
Default indications of the counter after its activation
PoS / SPEEd / CYCLE
12.
MEM
Record of counter position
on / oFF
13.
CLR
Counter zeroing mode
oFF / riS / FAL
14.
RS1
MODBUS address
RS485
0-99
15.
RS2
MODBUS baudrate
96000 / 19200 / 38400
57600 / 115200
16.
BEP
Sound signal of buttons
Other
On / oFF
17.
LED
Brightness level of display
0-9
18.
FAC
Restoring factory default settings
19.
PAS
Password
X-0000 - non active
Menu exit/abortion
Parameter confirmation/abortion
CAUTION: Appearing of blinking measured value on display preceded by C means overfilling of result
value (the result don’t fit in 6 position display). To display older part of the result press button.

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3.2 Example of parameter change
After correct connection of external elements and switching power supply on MD150E counter is
ready for operation with previously used settings, and in case of first operation –with factory
settings.
In order to enter programming mode, press .The display shows 1. P1, if the password is
switched off or 0000 if it is active. In such case, in order to enter programming mode (at active
password) enter the password and confirm it with the key ;
With subsequent pressing of key you switch to next parameters and with pressing of
key you return to previous parameters.
At the selected parameter you want to change, press ;
With key select display digit position you want to change and change its value with
key. Confirm the entered value with key;
Value of single digit parameters is selected with and keys;
If you want to enter a negative value select the first digit (from the left) then press and hold
key until the symbol “-“ is displayed.
With key you confirm the introduced change and with key you abort the change or
exit the menu.
Prolonged pressing of or keys results in automatic increase/decrease of a given
position/value.
4.Counter configuration
4.1 Inputs modes –Encoder / Up-Down / Step-Direction
Selection of input signal sources depends on application. User can use two differential input
channels: A+/A- and B+/B- used for counting and RST signal for counter zeroing. One of three ways of
signals interpretation is specified as Input mode parameter –7. In, which enables setting modes
presented below:
A-B –encoder
A-B mode is designed for use with encoders, which generate signals on two channels shifted in
phase. It enables to define direction of movement, and counting of all 4 slopes (square wave) allows
to increase four times the real encoder resolution.

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U-D –up/down
At this mode pulses given on B channel increase counter value and given on A channel decrease
counter value. You can’t use this mode for encoders. This mode requires signals from two
independent sources.
D-C –Direction/Clock
d-C mode is specific to control of stepper motors and servo motors. B channel counts pulses, A
channel switch counting direction. This mode is designed mostly for use with external devices or with
sensors with mentioned above signals.
Picture. 6 Meaning of A/B external signals in dependence on input mode (7. In parameter).

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4.2 Calibration of counted pulses
5. DIV parameter allows conversion of received pulses into selected unit e.g. distance or rpm.
Other parameters which influence on displayed value
6. OFFS –value offset causing adding for indication constant number value,
9. DP –allows to define number of decimals of displayed result. DP parameter also influence on
range of 1. P1, 2. P2 and 6. OFFS parameters. If DP = 0, then P1, P2, OFFS settings can be changed
only in an integer part in range from -99999 up to 999999. When DP=4 parameters above could be
changed in range from -99.9999 up to 99.9999.
4.3 Measurement of pulses frequency (velocity)
MD150E counter provides readout of counted pulses frequency, which allows e.g. to define
rotational or linear speed of measured object with build-in sensor generating pulses. To provide
correct velocity indication in set units (e.g.. in mm/sec., rpm./sec.) you should properly calibrate
pulses according to 4.2paragraph.
Furthermore 10. SPD parameter allows to define unit of displayed velocity in:
1. SEH –pulses / second (gate time 0,1 sec.)
2. nIn –pulses / minute (gate time 1 sec.)
3. HoUr –pulses / hour (gate time 60 sec.)
CAUTION!
During external zeroing of the counter (or counter operation mode with automatic zeroing),
when zeroing occur more often than gate time of velocity measurement, the velocity won’t be
updated.
4.4 Filtration of input signals
8. FILT parameter provides activation of filtration for A, B counting signals and reset signal RST.
Filtration prevents accidental counting of pulses (or counter reset by RST input) during operation in
noise environment or while counting of pulses from irregular slopes.
Filtration deactivated -> FILT =
OFF
Filtration activated -> FILT= ON
A/B Inputs
Inputs frequency. max. 2Mhz
Inputs frequency. max. 125Khz
RST Input
Resetting pulse > 1mS
Resetting pulse > 10ms
Table 1.Inputs parameters in dependence on set filtration.
4.5 Resetting of pulses and cycles counter
Reset by keyboard : Press and hold (ESC) button by 3 sec. On display appears Reset inscription.
Reset by external signal RST: State of pulses and cycles counter can be reset by signal given on
resetting input RST. There is an additional possibility to set signal slope, on which should occur
counter reset or blocking of external reset function. For this aim is designed 13. CLR parameter,
which can take values listed below:
1. oFF - external reset turned off

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2. rIS - reset on rising slope (signal change from 0 to +5..+24V)
3. FAL - reset on falling slope (signal change from +5..+24V to 0V)
4.6 Record of counter state
MD150E provides saving of current pulse counter state which is accessible after next counter
activation. For this purpose use 12. MEM parameter. When that parameter is set on „On” the
current value of the counter will be saved before its turning off and will appear on display after next
turning on.
CAUTION!
Cycle counter state (L) is not saved.
4.7 Relay outputs and operation modes
MD150E counter has two relay outputs PK1 and PK2, which can be turned on/off in dependence on
counter state and operation mode. For configuration relay outputs you can use parameters listed
below:
1. P1 -P1 setting
2. P2 -P2 setting
3. PTIM - relay turn-on duration (in milliseconds)
4. PMOD –operation mode
CAUTION!
P1 and P2 settings can take negative values, but it is useful only in some cases (see -> operation
modes)
PMOD operation mode defines way of turning on/off of relay outputs, automatic counter reset at
specified value and increasing of cycle counter. There are available operation modes listed below:
Mode 0 (nodE 0) –Cyclic mode with automatic reset
At this mode reset of the counter occur after reaching P1 setting. Each zeroing of the counter also
causes increasing cycle counter (L). At the same time PK1 follows into active state for time specified
by PTIM parameter, or for non defined time when PTIM = 0.
If P1 > P2 condition is fulfilled, PK2 output will be active in range of P1 ÷ P2 indications.
In other condition PK2 stayed off-line.
P1 > P2
PTIM > 0
PK1 output activates PTIM time, while
counter will exceed value of P1 setting. At
the same time pulses counter is reset and
cycle counter increases (L).
PK2 output will be activated when counter
value will be located between P1 and P2
settings.

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Mode 1 (nodE 1) –Absolute with two thresholds
Activation of PK1 and PK2 outputs occurs after reaching P1 and P2 values, which can be positive or
negative.
Mode 2 (nodE 2) –Absolute with thresholds and margin
At this mode PK1 output is active when counter value is in range (P2 –P1) ÷ (P2 + P1). If P2 <0, PK2
output will be active after reaching P1 setting (positive or negative).
Mode 3 (nodE 3) –Cyclic with cycle counting
At this mode counter reset occur after reaching P1 setting. At the same time PK1 output follows into
active state for time specified by PTIM parameter for non defined time when PTIM = 0. Each zeroing
is counted by cycle counter (L). If cycle counter (number of zeroing of pulses counter) reach value
set by P2 parameter, PK2 output will be activated.
P1> 0
P2> 0
PK1 output is activated for PTIM time when
counter will reach P1 value. At the same time
pulses counter is reset and cycles counter
increases (L).
PK2 output is activated when cycles counter
reach P2 value and it is turned off when
counter is reset by external signal or by
keyboard.
This mode is dedicated for application in cutting machines for counting length and number of cut
elements.
Picture. 7 Example of length measurement application with MD150E used for counting material cut offs in a production line.
Mode 4 (nodE 4) –Absolute controlled by velocity
Activation of PK1 and PK2 outputs follows when velocity counter exceed (pulses frequency) values
of P1 and P2 settings.

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5. Password protection
Access to the process display settings can be password protected (parameter 19. PAS). There are
3 protection levels available. Protection level is set with the first digit, and the last 4 digits are used
for password entry.
0-0000
4-digit password (0-9999)
Protection level:
0- Settings protection above 6. OFFS
parameter
1- Settings protection above 3. PTIM
parameter
2- Protection of all settings
If the digital processing unit is password protected, then
after switching to protected settings the display shows
0000 value –enter previously set password. The
password can be deactivated by switching the parameter
19. PAS and setting 0000 value.
Menu protection level
1. P1
2. P2
3. PTIM
4. PMOD
5. DIV
6. OFFS
7. IN
8. FILT
9. DP
10. SPD
11. DISP
12. MEM
13. CLR
14. RS1
15. RS2
16. BEP
17. LED
18. FAC
19. PAS
6.USB and RS485 Modbus interfaces
6.1 USB interface
USB interface is used for connection of MD150E counter with MD150E-PC software (device
configuration, recording of measurements) and for updating of internal software. MD150E process
display must be powered in order to facilitate connection via USB.
CAUTION
USB interface is prone to interference in the power supply grid and to electromagnetic
interference occurring in industrial environments. In case of connection problems during
communication of the digital processing unit with MD150E-PC software, apply additional
protective elements in the form of:
Powering of MD150E digital processing unit from an independent power supply source,
Application of network filters upstream of the indicator supply feeder.
Use of USB cable of length <1,5m equipped with ferrite beads at the cable beginning and its end.
Use of optically insulated USB hubs at PC side.
In the conditions of severe interference (e.g. high interference of power grid) the communication may not
be possible.
6.2 RS485 (MODBUS-RTU) interface
MD150E counter is equipped with RS485 interface. It can be used for connection with PLC
controller, HMI panel or other device supporting MODBUS-RTU protocol.
2
1
0

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Default transmission parameters:
Speed: 38400bps, Bits: 8, Stop Bits: 1, parity: none
Address Modbus: 1
Transmission speed and MD150E counter address in MODBUS-RTU network can be set with the
following parameters:
12. RS1 - baudrate setting MODBUS (9600, 19200, 38400, 57600, 115200)
13. RS2 - address setting MODBUS (1…99)
6.2.1 Description of MODBUS protocol
Implemented MODBUS functions
Function no (hex)
Description
1 (0x01)
Reading of outputs status (relays)
3 (0x03)
Reading X registers
5 (0x05)
Recording of single Bit
Type of used variables
Variable
name
Description
Size
(Bytes)
Number of
occupied
registers
Range
INT
2 Bytes number with sign
2
1
-32768 - +32767
DINT
4 Bytes number with sign
4
2
-231 …(231-1
REAL
Floating point number
4
2
1.18*10-38…3.40*1038, 0, -3.40*1038 … -
1.18*10-38
Map of MD150E records
Address
Name
Mode
Variable type
(MODBUS function)
Description
0 -1 (*1-2)
COUNTER_VAL
R
DWORD (0x03)
Readout of pulses counter value (non calibrated
value)
2 (*3)
CYCLE_VAL
R
INT (0x03)
Readout of cycles counter value –L
4-5 (*5-6)
COUNTER _DISP
R
REAL (0x03)
Readout of pulses counter value indicated by
display (floating point number)
6-7 (*7-8)
SPEED _DISP
R
REAL (0x03)
Velocity readout indicated by display–U
(floating point number)
5000 (*5001)
COUNTER_RESET
W
BYTE (0x05)
Reset of cycles and pulses counter
5002 (*5003)
PK_OUT
R
BYTE (0x01)
Readout of relay outputs status
(bit 0:PK1, bit 1:PK2)
5004 (*5005)
INPUTS
R
BYTE (0x01)
Readout of inputs state
(bit 0: INA. bit 1: INB, bit 2:RST)
*for devices with address starting with 1 value (offset address +1)
CAUTION: 4-Byte number of type REAL or DINT is contained in two registries. The first registry contains younger part of the
number, the second - its older part. In order to read REAL or DINT number value correctly, read two registries (X, X+1) then
conduct appropriate conversion.
Conversion of 2 registries (4 Byte) into 32 Bit number (REAL, DINT)
Register HI
Register LO
Register_X+1 HI
Register_X+1 LO
<-> Byte1
<-> Byte0
<-> Byte3
<-> Byte2
Number_32_bit = Byte3<<24 + Byte2<<16 + Byte1<<8 + Byte0
or Number_32_bit = Register_2 + Register_3<<16

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Example of MODBUS communication table
Readout of counter state (non calibrated) - COUNTER_VAL (Function: 03, Register address: 0)
Request (MODBUS MASTER -> MD150E)
Response (MD150E -> MODBUS MASTER)
Device address
0x01
Device address
0x01
Function
0x03
Function
0x03
Hi registry address
0x00
Number of Bytes
0x04
Lo registry address
0x00
Register 0x02 Hi
REAL (Byte 1)
Number of Hi registries
0x00
Register 0x02 Lo
REAL (Byte 0)
Number of Lo registries
0x02
Register 0x03 Hi
REAL (Byte 3)
CRC Hi
0xC4
Register r 0x03 Lo
REAL (Byte 2)
CRC Lo
0x0B
CRC Hi
8 bit
CRC Lo
8 bit
Readout of cycle counter - CYCLE_VAL (Function: 03, Register address: 2)
Request (MODBUS MASTER -> MD150E)
Response (MD150E -> MODBUS MASTER)
Device address
0x01
Device address
0x01
Function
0x03
Function
0x03
Hi registry address
0x00
Number of Bytes
0x02
Lo registry address
0x02
Register 0x00 Hi
INT (Byte 1)
Number of Hi registries
0x00
Register 0x00 Lo
INT (Byte0)
Number of Lo registries
0x01
CRC Hi
8 bit
CRC Hi
8 bit
CRC Lo
8 bit
CRC Lo
8 bit
Counter reset- COUNTER_RESET (Function: 05, Register address: 5000)
Request (MODBUS MASTER -> MD150E)
Response (MD150E) -> MODBUS MASTER)
Device address
0x01
Device address
0x01
Function
0x05
Function
0x05
Hi registry address
0x13
Address of Hi registries
0x13
Lo registry address
0x88
Address of Lo registries
0x88
Register 0x00 Hi
0xFF
Register 0x00 Hi
0xFF
Register 0x00 Lo
0x00
Register 0x00 Lo
0x00
CRC
16 bits
CRC
16 Bits
7.Technical parameters
Description
Parameter
Power supply
Standard version
12 … 36V DC, recommended 24 VDC, min. 250mA + current
consumption
MD150E-230 version:
85 … 260V AC, 10W, 47-440Hz
Sensor power supply output
5V DC, max. 500mA
15V DC, max. 500mA (only for 230V version, please contact
with WObit technical support)
Counter inputs A/B
Differential, opt insulated
Low level: 0V (max. 2V), High level: +24V (5…24V)
Reset input RST
Low level: 0V (max. 2V), High level: +24V (5…24V)
Max. frequency for counter inputs A,B
2Mhz (off-line filtration)
125Khz (filtration activated)
Min. length of reset signal RST
1ms (off-line filtration)
10ms (filtration activated)
Relay outputs PK1, PK2
2 x 1A/125VAC, 2A/30VDC
Interfaces
RS485 MODBUS-RTU,default parameters 38400bps, 8:n:1,
USB: 1.1, 2.0
Operation temperature range
0..50o C

MD150E –pulses and velocity counter (02.06.2014)
17
Display
6 digits, height13.5 mm
Housing
Height: 45 mm
Width: 92 mm
Length: 81 mm
Weight
200g (300g for 230V version)
IP class
IP40, for front panel–IP65
Universal password
3145
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