RIEKER Flex MPI Series User manual

Multi-Output
Precision
Inclinometer
Touch Screen
User Programmable
Dual & Single Axis
Multi-Mount
2021 Flex Series MPI User Guide

MPI User Guide
Page 1 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
PRODUCT SAFETY GUIDE FOR RIEKER MPI DIGITAL GRAPHIC DISPLAY
Important safety, health, and regulatory info that applies to the Rieker MPI Digital Graphic Display.
WARNING: Outdoor and Wet Conditions Use
The Rieker MPI device is rugged and dust tight – it is NOT waterproof and is not impervious
to water damage in wet environments. To avoid damaging this device, do not submerge it or expose
it to excessive rain or moisture. To reduce the risk of fire or shock, do not attempt to change
batteries in rain or excessive moisture conditions.
WARNING: Do Not Attempt Repairs
Do not attempt to take apart, open, service, or modify the product, accessories, or power
supply. Doing so could present the risk of electric shock or other hazard. Any evidence of any
attempt to open and/ or modify this device, including any peeling, puncturing, or removal of any of
the labels, will void the Limited Warranty.
WARNING: Battery Safety
This device contains a lithium ion battery, improper use of which may result in fire or
explosion. To reduce the risk of fire or explosion, do not heat, open, puncture, mutilate, or dispose
of the product in fire.
Do not leave the device in direct sunlight, such as on the dash of a car in the summer, for an
extended period of time. Product contains rechargeable batteries do not recharge your device near
a fire or in extremely hot conditions.
WARNING: Proper Storage - Extreme Environmental Conditions
Only store your Rieker graphic display device in a clean, dry environment. Do not store your
Rieker MPI device where the ambient temperature is above 158°F (70°C) or below -4°F(-20°C). Do
not store your Rieker device where is it exposed to strong electromagnetic fields or where it may be
exposed to direct electrical current. Using or storing the Rieker MPI device in an environment where
the external temperature varies widely and quickly might damage the display. When moved to a
location with a temperature difference of 20°F (11°C) or more from the previous location, allow the
device to come to room temperature before turning it on.
WARNING: Potentially Explosive Atmospheres
Areas with potentially explosive atmospheres are often, but not always, posted and can
include fueling areas, such as below decks on boats, fuel or chemical transfer or storage facilities,
or areas where the air contains chemicals or particles, such as grain dust, or metal powders. The
Rieker MPI device is NOT rated for hazardous locations. When you are in such an area, turn off the
device, and do not remove or install battery chargers, AC adapters, or any other accessory. In such
areas, sparks can occur and cause an explosion or fire.
CAUTION:
This MPI has been manufactured to allow for trip angle adjustment. Purchaser assumes the
responsibility of ensuring that the settings are appropriate for their specific application. IN NO EVENT
WILL RIEKER BE LIABLE FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES OF ANY KIND.
CALIBRATION NOTES: This instrument has been calibrated to perform to precise
specifications. Any tampering or reconfiguration of this instrument may change the
properties of the product, and will therefore void the warranty. All sensors are sealed. If the seal is
broken the calibration and warranty is void.

MPI User Guide
Page 2 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
Table of Contents
PRODUCT SAFETY GUIDE FOR RIEKER MPI DIGITAL GRAPHIC DISPLAY ..1
Updates & Revision History.........................................................................................5
MPI Installation............................................................................................................6
Horizontal Mount Axis Orientations ......................................................................6
Vertical Mount Axis Orientations ..........................................................................6
MAIN SCREEN ADJUSTMENTS.............................................................................7
1.1 Adjust Vertical or Horizontal Device Orientation...........................................7
1.2 Change the Character Height of the Displayed Angle ..................................7
1.3 Change from Dual to Single Axis Display.....................................................7
1.4 Zero the Display Indication ...........................................................................8
1.5 View the Min/Max Angles .............................................................................8
1.6 Battery Charge Level Indicator .....................................................................9
1.7. Lock and Unlock the Touch Screen..............................................................9
The MENU Indicator ................................................................................................9
2.1 Rules for the Arrows...................................................................................10
OUTPUT MENU.....................................................................................................10
3.1 Display Adjustments...................................................................................11
3.2 DISPLAY ADJUST MENU 2.......................................................................12
3.3 ANALOG OUTPUT.....................................................................................14
3.4 RS232 OUTPUT.........................................................................................15
3.5 RS485 OUTPUT.........................................................................................15
3.6 SWITCHES ................................................................................................16
Sensitivity & Zero Angle Calculation (Voltage Outputs Only) ....................................22
Wiring Diagrams and Connection Procedures...........................................................23
Wiring for a Voltage Output....................................................................................23
RS485 Bus Wiring Configurations .............................................................................23
Wiring for the Relay Outputs..................................................................................24
Digital RS485 Communications .................................................................................25
RS485 Protocol......................................................................................................25

MPI User Guide
Page 3 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
Packet Format ....................................................................................................25
RS485 Command Functions..................................................................................26
Function Descriptions.........................................................................................27

MPI User Guide
Page 4 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
List of Figures
FIGURE 1: MPI DIMENSIONS AND MOUNTING (INCHES [MM])............................................................................................ 6
FIGURE 2: MOUNTING POSITIONS .................................................................................................................................. 6
FIGURE 3. SWITCH WIRING DIAGRAM ........................................................................................................................... 19
FIGURE 4: RS485 TO BUS CONNECTION ....................................................................................................................... 23
FIGURE 5: SWITCH WIRING DIAGRAMS .......................................................................................................................... 24
List of Tables
TABLE 1: REVISION HISTORY .......................................................................................................................................... 5
TABLE 2: HS2P9M26 9-PIN INPUT/OUTPUT CONNECTOR WIRING..................................................................................... 23
TABLE 3: RS485 FUNCTION LIST .................................................................................................................................. 26

MPI User Guide
Page 5 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
The MPI is aHigh-Accuracy Digital Inclinometer with Sunlight
Readable Touch Screen &Adjustable Output Parameters for
Precision Angle Measurements.
Description
The MPI provides accurate and precise single or dual axis inclination sensing ina rugged machined
Aluminum housing – the anodized finish protects the surface from wear. The design is well suited for
hand-held use; each side isa machined flat reference surface.
The MPI offers multiple configurable outputs: Graphic Touch-Screen Sunlight-readable Display,
Digital RS232 & RS485, Analog Voltage, and multiple Relay Switches providing maximum
functionality.
The display shows angle in degrees (º), percent grade (%), inch perfoot rise (“)with either 1, 0.1- or
0.01-degree resolution and Degree/Minutes(') with 0.01 minute resolution. The display provides
graphical axis level indicators in green, yellow, and red, which can be activated to trip at
predefined angles within the specified measuring range - providing the operator a bright visual alert
ofchanged condition. These can be coordinated with the built in Relay outputs – each with field
adjustable trip angle settings.
The MPI also has a Bulls-Eye Bubble Level mode for precise leveling applications.
Mounting options include machined plates for permanent installation orwith heavy duty magnets
added, temporary hands-free placement.
Updates & Revision History
The information in this guide may be subject to change. Please visit www.riekerinc.com for latest version of
this document. TABLE 1: REVISION HISTORY
REV DATE DESCRIPTION
A 12/24/19 Initial Release

MPI User Guide
Page 6 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
MPI Installation
FIGURE 1: MPI Dimensions and Mounting (Inches [Mm])
HORIZONTAL
FIGURE 2: Mounting Positions
Horizontal Mount Axis Orientations
As shown in the bottom drawing of Figure 2, the 0° orientation for a horizontal mount MPI is a desktop level
position.
•The top line of the display is the X-Axis measurement. Looking at the display with the connector
facing to the right, rotate the display side to side for the X axis.
•The bottom line of the display is the Y-Axis measurement. Looking at the display with the connector
facing to the right, rotate the display front to back for the Y axis.
Vertical Mount Axis Orientations
As shown in the top drawing of Figure 2,the 0° orientation for a vertical mount MPI is with the connector to
the right.
•The top line of the display is the X-Axis measurement. Looking at the display with the connector

MPI User Guide
Page 7 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
facing to the right, rotate the display clockwise or counterclockwise for the X axis.
•The bottom line of the display is the Y-Axis measurement. Looking at the display with the connector
facing to the right, rotate the display front to back for the Y axis.
MAIN SCREEN ADJUSTMENTS
What is displayed on the Main Touch Screen?
•Vertical or Horizontal Device Orientation Adjust
•Character Height Adjust
•Single or Dual Axis Display Adjust
oUnits of Measure
•Angles in Degrees
•Percent grade
•Inch Per Foot Rise
•Degrees / Minutes
oTrip angle indicator lights
•Relative or Permanent Zero Adjust
•Minimum and Maximum Angle Recall
•Battery Level Indicator Graphic
•Main Menu Button
•Lock or unlock the Touch Screen
1.1 Adjust Vertical or Horizontal Device Orientation
The Device can be used to measure either Horizontally (lying flat with the display facing up) or
Vertically (on one of the machined sides with the display facing the user).
The Horizontal “HORZ” or Vertical “VERT” device orientation can be set simply by touching the
“HORZ” or VERT” on the screen.
1.2 Change the Character Height of the Displayed Angle
The Character Height of the displayed angle is changed by touching the arrow in the upper right-
hand corner of the screen. The height is either 0.31” [8.13mm] or 0.5” [12.7mm].
1.3 Change from Dual to Single Axis Display
The device can indicate either a dual or single axis. The top line is the X axis or side to side angle
indication and the bottom line is the Y axis or front to back angle indication.
1.3.1 Select the X axis, single angle indication:
Touch the top line angle, in the center slightly above the decimal point. The bottom line will go away
and the X axis will be displayed in the center of the screen. To set the device back to dual axis
indication touch the screen just above the displayed X axis indication. The dual axis will again be
displayed.

MPI User Guide
Page 8 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
1.3.2 Select the Y axis, single angle indication:
Touch the bottom line, angle indication, in the center slightly above the decimal point. The top line will
go away and the Y axis will be displayed in the center of the screen. To set the device back to dual
axis indication touch the screen just below the displayed Y axis indication. The dual axis will again be
displayed.
1.4 Zero the Display Indication
The display has two options for zeroing the device:
•Relative Zero is a temporary setting that can be set anywhere within the operating range
of the device but will not be saved when the power is cycled.
•Permanent Zero is a (semi) permanent setting that can be set anywhere in the operating
range of the device and will be saved when the power is cycled but can be reset through
the menu. The device must be fixed in the desired zero positioned during the zeroing
process. NOTE: If the device is tilted in an orientation that is in an indeterminate range,
OVERRANGE will be displayed and the device will have to be repositioned before zeroing
can be achieved.
1.4.1 Set the Relative Zero
Touch “ZERO” on the main screen and a new screen “ZERO” will appear. The current state of the
RELATIVE Zero will be displayed in blue “OFF”. Touch the arrow to the right of the RELATIVE OFF to
set Relative zero. “RELATIVE ON” will be displayed. An (*) will appear the left of the newly zeroed
angle(s) indication. In dual axis mode both X and Y axis will be zeroed. In single axis mode only, the
active axis will be zeroed.
1.4.2 Remove the Relative Zero
Cycle the power or touch “ZERO” on the screen to return to the ZERO screen. Touch the arrow to the
left of the RELATIVE blue “ON” indication and RELATIVE OFF will be displayed. The Relative zero will
be removed and the factory calibrated zero will be restored.
1.4.3 Set the Permanent Zero
Touch “ZERO” on the main screen and a new screen “ZERO” will appear. The current state of the
PERMANENT Zero will be displayed in blue “OFF”. Touch the arrow to the right of the PERMANENT
OFF to set Permanent zero. “PERMANENT ON” will be displayed. The newly zeroed angle(s) are
displayed. In dual axis mode both X and Y axis will be zeroed. In single axis mode only, the active
axis will be zeroed.
1.4.4 Remove the Permanent Zero
Touch “ZERO” on the screen to return to the ZERO screen. Touch the arrow to the left of the
PERMANENT blue “ON” indication and PERMANENT OFF will be displayed. The Permanent zero will
be removed and the factory calibrated zero will be restored.
1.5 View the Min/Max Angles
The Minimum and Maximum angles that are achieved during a new measuring session are stored
temporarily to be viewed at the completion of the measuring session. A new session starts after
the power is cycled or the MIN/MAX indicator is touched on the main screen. If a Single axis is
selected only that axis’s MIN and MAX angles will be displayed.

MPI User Guide
Page 9 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
1.5.1 To View the MIN and MAX angles achieved during a measuring session
Touch the MIN/MAX indicator on the main screen and the MIN X and MIN Y will appear followed by
the minimum angles achieved. Touch the MIN/MAX indicator again and the MAX X and MAX Y will
appear followed by the maximum angles achieved. Touch the MIN/MAX indicator again and the device
will return to normal operation and a new MIN/MAX session will start.
1.6 Battery Charge Level Indicator
The Battery Charge Level Indicator is located at the upper left-hand corner of the screen showing
the charge level of the Lithium Ion battery. When the indicator is WHITE, the battery is operating
at an optimum performance level. When the indicator is YELLOW, the battery is approaching a
discharged state; there is a 15-minute window to connect the charger. When the indicator turns
RED, the battery is nearly discharged and will automatically turn off.
NOTE: the device may be used while charging.
1.6.1 Charge the Battery
The Battery is charged using a Lithium Ion battery charger with a USB-C connector included in
the kit. WARNING: Using another type of charger not specifically designed for Lithium Ion
batteries can cause damage to the device and the battery and cause a fire.
The charger can be plugged into a 110-240VAC supply using the wall wart adapter or a USB
Type A port that supplies power. The Battery indicator will indicate charging when the battery
begins to charge.
NOTE: It may take up to 30 seconds before the indicator shows it is charging. A depleted
battery may take several minutes before the device will operate.
1.7. Lock and Unlock the Touch Screen
The Touch Screen may be Locked to prevent inadvertent touches or unlocked so that the
user interface can be activated.
The Touch Screen Lock symbol is located at the bottom right hand corner of the display and
indicates the current state of the Touch Screen. A closed lock indicates a locked or inactive
touch screen and an open lock indicates an active touch screen.
To change the current state and indication of the touch screen touch the lock on the screen until
it indicates the desired state.
While the Touch Screen is locked only the lock portion of the screen is active. To change any
features of the device, the Touch screen must be unlocked.
The MENU Indicator
The menu indicator allows for adjustment of the device’s parameters. By touching this on the
main screen new menus will appear to set individual parameters available to the device. Arrows
are used to navigate through the adjustment screens and to set parameters.

MPI User Guide
Page 10 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
2.1Rules for the Arrows
Touching a LEFT-FACING ARROW at the upper-left of the screen returns to the previous
menu screen.
Touching a RIGHT-FACING ARROW advances to the next screen, which will be either a
submenu of the current menu screen or the current parameter setting screen.
Touching the RIGHT-FACING ARROW in the last mode settings screen returns to the previous
mode setting screen.
Touching an UP-FACING ARROW increases or changes the value of the setting shown.
Touching a DOWN-FACING ARROW decreases or changes the value of the setting shown.
OUTPUT MENU
The Output Menu is the main screen that appears after touching the MENU indicator. From this menu
the Display, Analog, RS232, RS485, and Switches sub-menus are accessed. Each Sub-Menu has its own
set of parameter adjustments based on the output type:
•Display
oPower Save
oAngle Display Resolution
oBrightness
oFilter
oUnits of Measure
•Display > Display Submenu
oPolarity
oBulls-Eye Level Mode
oFactory Defaults Reset
•Analog
oOutput enable/disable
oX and Y axis MIN/MAX settings
•RS232
oOutput enable/disable
oBaud Rate adjust
•RS485
oOutput enable/disable
oBaud Rate adjust
•Switches
oMultiple Relay output enable/disable

MPI User Guide
Page 11 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
oTrip Point adjust
oTrip angle indicator lights
3.1 Display Adjustments
The display parameters are adjusted within the DISPLAY ADJUST Menu. From this screen the user will
be able to set POWER SAVE, RESOLUTION, BRIGHTNESS, FILTER, and UNITS of Measure.
•Touch “MENU” on the Main Screen to bring up the OUTPUT MENU
•Then select “MENU” to the right of DISPLAY to access DISPLAY ADJUST.
NOTE: FACTORY DEFAULTS restore, POLARITY orientation, and BULLS EYE LEVEL mode are accessed in
the DISPLAY ADJUST submenu (see 3.2 below).
3.1.1 Adjust the Power Save Feature
The POWER SAVE function is a 2-part feature allowing the user to set the idle time limit to dim the
display and/or shut down the device completely to save battery power.
POWER SAVE DIMMER: The current setting for the dimmer limit is shown to the right of “POWER
SAVE”. If the device is sitting idle with the angle changing less the ±1° for a time that is greater than
the calibrated dimmer time limit, the screen will dim to save power. The device will return to the
current display brightness if the device is tilted beyond ±1°. NOTE: this does not affect the function of
the other outputs.
POWER SAVE SHUT DOWN: This allows the user to set the idle time limit to turn off the device
including any other outputs. NOTE: Press the ON/OFF switch to restart the device.
•Touch the arrow to the right of POWERSAVE.
•The current setting will be displayed. Touch the up- or down-facing arrows to set the Dimmer
time.
oTime limit in minutes: 10, 20, 30, 40, 50, 60, 120, 180, OFF
•To return to the DISPLAY ADJUST Menu, touch the left-facing arrow or.
•To set the POWER SAVE SHUT DOWN, touch the right-facing arrow.
•The current setting will be displayed. Use the up- and down-facing arrows to set the Shut
Down time.
oTime limit in minutes: 10, 20, 30, 40, 50, 60, 120, 180, OFF
•When finished, touch the left-facing arrow to return to the Display Adjust Menu.
3.1.2 Adjust the Resolution
The RESOLUTION function allows the user to set the precision of the angle displayed. The current
setting is shown to the right of “RESOLUTION”.
•Touch the arrow to the right of RESOLUTION.
•The current setting will be displayed. Touch up- or down-facing arrow to cycle through the
resolution settings.
o0.01, 0.1, 1
•When finished, touch the left-facing arrow to return to the DISPLAY ADJUST Menu.

MPI User Guide
Page 12 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
•Touch the arrow in the upper left corner to return to the previous menu screen.
3.1.3 Adjust the Brightness
The BRIGHTNESS function allows the user to set the brightness of the touch screen. The current setting
is shown to the right of “BRIGHTNESS”.
•Touch the arrow to the right of BRIGHTNESS.
•The current setting will be displayed. Touch the up- and down-facing arrows to set the
desired brightness.
o1 - 8
•When finished, touch the left-facing arrow to return to the DISPLAY ADJUST Menu.
•Touch the arrow in the upper left corner to return to the previous menu screen.
NOTE: The default setting is “3”; increasing the brightness level will increase the power required,
shortening the time between recharges.
3.1.4 Adjust the Filter
The FILTER function allows the user to set the response time of the device. The current setting is shown
to the right of “FILTER”.
•Touch the arrow to the right of FILTER.
•The current frequency response will be displayed in Hz. Touch the up- and down-facing
arrows to set the desired response.
oFrequency response in Hertz (Hz): 4, 8, 16, 31, 63, 125, 250, 500
•When finished, touch the left-facing arrow to return to the DISPLAY ADJUST Menu.
•Touch the arrow in the upper left corner to return to the previous menu screen.
3.1.5 Adjust the Display UNITS of Measure
The UNITS function allows the user to set the Units of Measure for how the measured angle is
displayed. The current setting is shown to the right of “UNITS”.
•Touch the arrow to the right of UNITS.
•The current setting will be displayed. Touch up- or down-facing arrow toset the desired UoM.
oUoM: Degrees (º), Percent Grade (%), Inch Per Foot Rise (“), Minutes (')
•When finished, touch the left-facing arrow to return to the DISPLAY ADJUST Menu.
•Touch the arrow in the upper left corner to return tothe previous menu screen.
3.2 DISPLAY ADJUST MENU 2
Additional device functions can be adjusted with the DISPLAY ADJUST Submenu. This menu allows for
resetting to FACTORY DEFAULTS, setting the POLARITY of clockwise rotation of the device to either
increasing (+) or decreasing (-), and activation of a BULLS EYE LEVEL function.
•Touch “MENU” on the main screen, which brings up the OUTPUT MENU.
•Then touch the arrow to the right of “DISPLAY” to bring up the DISPLAY ADJUST Menu.

MPI User Guide
Page 13 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
•Touch the arrow to the right of “DISPLAY ADJUST” to bring up the DISPLAY ADJUST Submenu.
3.2.1 Set the Factory Defaults
The FACTORY DEFAULTS function allows the user to reset all parameters back to the original factory
calibrated settings, including any user-set parameters.
•Touch the arrow to the right of FACTORY DEFAULTS.
•The current setting “NO” will be displayed. Touch the up-facing or down facing arrow to select
YES. NOTE: A WARNING message stating, “CHANGES WILL BE LOST”, will appear.
•To accept the factory default reset, touch the arrow in the lower left corner. The Display will go
black while the unit resets, then restart; the main screen will display dual axis mode, horizontal
orientation.
3.2.2 Set the Clockwise Polarity
The POLARITY function allows the user to change the polarity of the Units of Measure during clockwise
(CW) rotation. The current setting is shown to the right of “UNITS”.
•Increasing view when the display is rotated clockwise (+ CW)
•Decreasing view when the display is rotated clockwise (- CW)
NOTE: The Switch Outputs and Trip Angle Indicator Light settings will physically remain at the same
location but the trip angle polarities will change.
Example:
If the yellow to red transition color indicators for SWITCH OUTPUT 1 were set at +10 and -15 for -CW
rotation, the yellow to red transition color indicators for SWITCH OUTPUT 1 would be -10 and +15 for
+CW rotation. The switches would not move, only the displayed polarity would change. The polarity
will also be changed in the LED ADJUST MENU.
•Touch the arrow to the right of “POLARITY”.
•The current polarity setting “DECREASING” or “INCREASING” will be displayed. Touch the up-
facing arrow to set INCREASING and the down-facing arrow to set DECREASING.
•Touch the arrow in the lower left corner to return back to the DISPLAY ADJUST Submenu. The
current polarity will be displayed next to POLARITY.
•Touch the arrow in the upper left corner to return to the previous menu screen.
3.2.3 Activate the Bulls Eye Level
The BULLS EYE LEVEL function allows the user to select a precision digital circular bubble level (bulls
eye) as the device’s display option. The rings are in 1-degree increments, with a max range ±3°; X and
Y coordinates are displayed in the upper corners. The white “ball” changes to green when it is within
±0.05° in both the X and Y axis. The user may also set the ZERO in BULLS EYE mode, either Relative or
Permanent. Other adjustable functions are not available in this mode. NOTE: The Bulls Eye Level is used
in a horizontal orientation only (as if lying flat on a desktop, screen facing up).
•Touch the arrow to the right of “BULLS EYE LEVEL”.
•The current setting “OFF” will be displayed. Touch the up-facing or down-facing arrow to
toggle between “ON” and “OFF”.

MPI User Guide
Page 14 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
•Touch the lower right arrow to return to the DISPLAY ADJUST Submenu. Touch the arrow in
the upper left corner and exit all screens to activate the indicator.
To return to normal operation:
•Touch “MENU”.
•Touch the arrow to the right of “DISPLAY”.
•Touch the arrow to the right of “DISPLAY ADJUST”.
•Touch the arrow to the right “BULLS EYE LEVEL”. Touch the up-facing or down-facing arrow to
select “OFF”. Touch the lower left arrow to exit the BULLS EYE LEVEL ADJUST screen and
return to the DISPLAY ADJUST Submenu.
•Touch the arrow in the upper left corner to return to the previous menu screen. Exit all screens
to return to normal operation.
3.3 ANALOG OUTPUT
The ANALOG function allows the user to set the parameters of the (2) analog outputs, one for the X
axis and one for the Y axis.
If the device is in Vertical mode, the vertical parameters will be set. If in Horizontal mode the horizontal
parameters will be set.
If in single axis mode only the active axis will be set.
Depending on the Units selected the limits for the analog outputs are ±80° dual, ±180°single, ±100%
grade and ±12” for inch per foot rise.
3.3.1 Set the Analog Output
The analog outputs can be turned on or off from the first Analog Output screen.
•Touch “MENU” for the OUTPUT MENU. The current setting is shown to the right of
“ANALOG”.
•Touch the arrow to the right of “ANALOG”.
•Touch the up- and down-facing arrow to select ON or OFF. If ON is selected, the user can
now set the X and Y axis minimum and maximum output parameters.
•Touch the right-facing arrow for the next screen.
•Touch the up- and down-facing arrows to select the MINIMUM RANGE (–X) angle for the
X axis analog output.
•Touch the right-facing arrow for the next screen.
•Touch the up- and down-facing arrows to select the MINIMUM RANGE (+X) angle for
the X axis analog output.
•Touch the right-facing arrow for the next screen.
•Touch the up- and down-facing arrows to select the MINIMUM RANGE (–Y) angle for the
X axis analog output.
•Touch the right-facing arrow for the next screen.
•Touch the up- and down-facing arrows to select the MINIMUM RANGE (+Y) angle for
the X axis analog output.

MPI User Guide
Page 15 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
•To modify the X and Y parameters, touch the left-facing arrow for the previous screen.
•When finished, touch the right-facing arrow to return to the OUTPUT MENU
•Touch the upper left-facing arrow of the OUTPUT MENU to return to normal operation.
3.4 RS232 OUTPUT
The RS232 function allows the user to set the parameters for transmitting and receiving TXD and RXD
communication. The output data will first present the X axis followed by a comma then the Y axis. If
the device is in single axis mode only the active axis will be displayed. If in Horizontal Mode, the
horizontal axis will be communicated. If in Vertical mode, the Vertical axis will be communicated.
3.4.1 Set the RS232 Output
The RS232 output can be turned ON or OFF from the first RS232 Output screen
•Touch “MENU” for the OUTPUT MENU. The current setting is shown to the right of
“RS232”.
•Touch the arrow to the right of “RS232”.
•Touch the up- or down-facing arrow to select ON or OFF. If ON is selected, the user can
now set the Baud Rate output parameters.
•Touch the right-facing arrow for the next screen.
•Touch the up- and down-facing arrows to select the BAUD RATE.
oBaud Rate selections: 9.6K, 19.2K, 38.4K, 65.2K, 115.2K, 125K, 128K, 250K
oAll other parameters are factory set 8 bit, no parity, 1 stop bit, no flow control
•When finished, touch the left-facing arrow to return to the OUTPUT MENU.
•Touch the upper left-facing arrow of the OUTPUT MENU to return to normal operation.
3.5 RS485 OUTPUT
The RS485 function allows the user to set the parameters for the RS485 communication. The output
will first present the X axis followed by a comma then the Y axis. If the device is in single axis mode
only the active axis will be displayed. If the device is in Horizontal Mode, the horizontal axis will be
communicated. If the device is in Vertical mode, the Vertical axis will be communicated.
3.5.1 Set the RS485 Output
The RS4852 output can be turned ON or OFF from the first RS485 Output screen
•Touch “MENU” for the OUTPUT MENU. The current setting is shown to the right of
“RS485”.
•Touch the arrow to the right of “RS485”.
•Touch the up- or down-facing arrow to select ON or OFF. If ON is selected, the user can
now set the Baud Rate output parameters.
•Touch the right-facing arrow for the next screen.
•Touch the up- and down-facing arrows to select the BAUD RATE.
oBaud Rate selections: 9.6K, 19.2K, 38.4K, 65.2K, 115.2K, 125K, 128K, 250K

MPI User Guide
Page 16 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
oAll other parameters are factory set 8 bit, no parity, 1 stop bit, no flow control
•When finished, touch the left-facing arrow to return to the OUTPUT MENU.
Touch the upper left-facing arrow of the OUTPUT MENU to return to normal operation.
3.6 SWITCHES
The SWITCHES function allows the user to adjust the 4 single-pole, single-throw Relays along with the
coordinated Trip Angle Indicator Lights (green, yellow, red circles), each with adjustable trip angle
settings.
Each Relay can be set as OPEN or CLOSED for a selected angle range. The DELAY for the transition of
the relay from OPEN to CLOSED or CLOSED to OPEN can also be selected. The relays all share the
same input, SWITCH INPUT but have 4 individual output lines to transfer whatever is on the input line,
SWITCH 1, SWITCH 2, SWITCH 3, SWITCH 4.
Horizontal and Vertical modes of operation have different functions for the color indicators and relays
and are set separately. If in single axis mode only the active axis will be set.
Horizontal mode: In Horizontal mode the X axis has two dedicated relays SWITCH 1 and SWITCH 3
and each has 3 Trip Angle Indicator Lights (green, yellow, red circles), located at the left and right sides
of the screen. The Y axis has two dedicated relays SWITCH 2 and SWITCH 4 and each has 3 Trip Angle
Indicator Lights (green, yellow, red circles), located at the top and bottom of the screen.
The transition angles from green to yellow and yellow to red have a negative and positive angle
adjustment. The negative transition angle adjustment is 0 to -180° and the positive transition angle
adjustment is 0 to +180°.
The relays will always change from OPEN to CLOSED or CLOSED TO OPEN on the YELLOW TO RED trip
angle setting.
Vertical mode: In Vertical mode the X and Y axes have their own Trip Angle Indicator Lights (green,
yellow, red circles) but share the 4 relays or SWITCH OUTPUTS. Any time either the X or Y axis angle
reaches a transition angle, for the relay associated with that angle, the relay will change state even
though the other axis may still be in a non-alarmed state.
The Trip Angle Indicator Lights (green, yellow, red circles) for X are displayed across the top of the
screen and the Trip Angle Indicator Lights (green, yellow, red circles) for Y are displayed along the right
side of the screen. The Trip Angle Indicator Lights starting from the top left for the X axis and the top
right side for Y axis are RED, YELLOW, GREEN, YELLOW and RED.
Relay 1 (SWITCH 1) is dedicated to the RED indicator for X and Y axes and Relay 2 (SWITCH 2) is
dedicated to the YELLOW indicator. The indicator lights are located at the top of the screen. Relay 3
(SWITCH 3) is dedicated to the next X and Y axis YELLOW indicators and Relay 4 (SWITCH 4) is
dedicated to the next RED color indicators.
The GREEN indicator in the center has no Relays or switches associated with it but will only appear if all
switches for that axis are in a non-alarmed state.
3.6.1 Set the Alarm angles in Horizontal Mode
Touch the Menu indicator on the main screen; then touch the arrow next to the OUTPUT MENU item
SWITCHES HORZ to enter the LED ADJUST HORZ adjustment screen. If the item is SWITCH VERT

MPI User Guide
Page 17 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
return to the main screen and select HORZ before proceeding. If the desired angles are set and the
user wishes to move on, the left arrow at the top of the screen will return to the previous menu. The
right arrow at the top of the screen will move on to the next switch adjustment mode.
GRN to YEL, X AXIS, SW1 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
GRN to YEL, X AXIS, SW1 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
GRN to YEL, Y AXIS, SW2 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
GRN to YEL, Y AXIS, SW2 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
GRN to YEL, X AXIS, SW3 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
GRN to YEL, X AXIS, SW3 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
GRN to YEL, Y AXIS, SW4 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
GRN to YEL, Y AXIS, SW4 and the current trip angle will be displayed. Use the up and down arrows to
set the desired green to yellow negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
The YELLOW to RED transition angles also sets the relay transition angle SWITCH 1 = SW1
YEL to RED, X AXIS, SW1 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
YEL to RED, X AXIS, SW1 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
YEL to RED, Y AXIS, SW2 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
YEL to RED, Y AXIS, SW2 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.

MPI User Guide
Page 18 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
YEL to RED, X AXIS, SW3 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
YEL to RED, X AXIS, SW3 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
YEL to RED, Y AXIS, SW4 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red positive transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
YEL to RED, Y AXIS, SW4 and the current trip angle will be displayed. Use the up and down arrows to
set the desired yellow to red negative transition angle. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment, the INITIAL STATE of the RELAY OPEN or CLOSED.
3.6.2Set the initial State of the Relays in Horizontal Mode (See Figure 3)
The relays can be set to be either OPEN or CLOSED when in a non-alarmed state. This adjustment is in
the OUPUT MENU item SWITCHES HORZ in the SWITCH ADJUST screen. To get there from the main
screen touch MENU, then touch the arrow to the right of SWITCHES HORZ in the OUTPUT MENU
screen, then touch the top right arrow in the LED ADJUST HORZ screen to arrive at the SWITCH
ADJUST screen.
SW1, RELAY, INITIAL STATE, and the current state of the Relay OPEN or CLOSED will be displayed. Use
the up arrows to set the desired OPEN or CLOSED state. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
SW2, RELAY, INITIAL STATE, and the current state of the Relay OPEN or CLOSED will be displayed. Use
the up arrows to set the desired OPEN or CLOSED state. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
SW3, RELAY, INITIAL STATE, and the current state of the Relay OPEN or CLOSED will be displayed. Use
the up arrows to set the desired OPEN or CLOSED state. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment.
SW4, RELAY, INITIAL STATE, and the current state of the Relay OPEN or CLOSED will be displayed. Use
the up arrows to set the desired OPEN or CLOSED state. When finished, touch the arrow in the lower
right corner to proceed to the next adjustment. SWITCH ADJUST DELAY
to proceed to the next adjustment. SWITCH ADJUST DELAY

MPI User Guide
Page 19 of 28
RIEKER INC • 34 MOUNT PLEASANT ROAD • ASTON • PA • 19014 • USA
610-500-2000 fax: [phone] [e-mail] www.riekerinc.com
The information and material presented may not be published, broadcast, rewritten, orredistributed without the expressed written consent of Rieker®Inc. The content presented is provided for informational purposes only and subject to change. ©2019 Rieker®All Rights Reserved. FORM NUMBER: MP0002_04/21 UPDATED: 4/19/21
Switch Input 0 to 30 VDC
Relay 1
NC SW1 OUT 0 to 30 VDC 500 mA
NO
Relay 2
NC SW2 OUT 0 to 30 VDC 500 mA
NO
Relay 3
NC SW3 OUT 0 to 30 VDC 500 mA
NO
Relay 4
NC SW4 OUT 0 to 30 VDC 500 mA
NO
FIGURE 3. SWITCH WIRING DIAGRAM