Baumer N 150 User Manual

Operating instructions

Interface description
N 150 spindle position display (SPA)
Software 01

Version 1.50 and up

Content Page

1. General information 2

1.1. Safety precautions 2

1.2. SPA description and explanation 3

2. Terminal assignment 4

3. Interface 5

3.1. Interface data 5

3.2. Protocol 5

3.3. Checksum (Cyclic Redundancy Check) 5

3.4. Data transmission properties 6

3.5. Broadcast commands 6

3.6. Data saving 6

4. Command explanations 6

4.1. General information 6

4.2. Operating commands 6

4.3. Parameter commands 11

4.4. Identifier commands 15

4.5. Specific commands 17

5. Error warnings 19

5.1. CRC error 19

5.2. Format error 19

6. Overview on commands 19

7. Technical data 20

7.1. Dimensions 21

8. Part number 21

Baumer IVO GmbH & Co. KG 02.10

Dauchinger Strasse 58-62 • DE-78056 Villingen-Schwenningen Subject to modification
Phone [phone]
www.baumer.com

• [e-mail]

• Fax [phone] in technic and design.

• 171.02.281/8

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1. General information

1.1. Safety precautions

General remarks

The equipment is designed and assembled according to the prevailing regulations of technology. The equipment
left the manufacturer in perfect working order and in line with all safety-relevant conditions. To maintain this
status of the equipment, it is imperative to stick to the following when installing and using the device:

- use only according to the intended purpose,

- observation of any precautions regarding safety and hazards,

- observe the present manual and especially the relevant safety precautions!

Make sure that the operating manual and especially the chapter describing the safety precautions is read and
well understood by the staff in charge. Supplementary to the operating instructions, ad other generally or legally
relevant regulations regarding accident prevention and environmental care are to be considered and observed.
This manual is a supplement to already existing documentation (product information, mounting instructions,
catalogues).

Intended purpose of the equipment

Intended purpose of the equipment is industrial process monitoring and control in metal, wood, plastic, paper,
glass and textile etc. industry.
It is imperative that the equipment is applied only

- in properly installed condition and

- in line with the relevant technical data!

Any operation outside the technical specifications/parameters is improper use and in conjunction
with the equipment/processes/machines to be monitored/controlled might lead to

- fatal injuries

- serious damage to health,

- damage to property or corporate equipment or

- damage to the device!

Any overvoltage the device might be exposed to at its connecting terminals has to be limited to the values
stipulated in overvoltage category II (see technical data).

The device must not be operated

- in hazardous areas where is danger of explosion,

- as medical equipment or in medical areas,

- or in any applications expressly named in EN 61010!

If the device is utilized for control/monitoring of machines or processes where as the result of a
failure/malfunction or incorrect operation of the device might occur

- any threats to life,

- risks of damage to health or

- any risk of damage to property or environment
the corresponding appropriate safety precautions must be taken!

Do not open the housing of the device or proceed any modifications! Any modifications of the device can affect
operating safety and result in danger!
Do not proceed any repairs but return defective devices to the manufacturer!

Installation/commissioning

In case of any extraordinary incidents (including in the operating behaviour) that impair safety switch off the
device immediately.
Installation must be carried out by suitably trained experts only. After proper mounting and installation the device
is ready for operation

Maintenance/repairs

Always disconnect the power supply of all appliances involved. Maintenance and repair work must only be
carried out by suitably trained experts.
If troubleshooting is unsuccessful, do not continue using the device but contact the manufacturer.

.

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1.2. SPA description and explanation

Mounting the spindle position display (SPA) is by docking hollow shaft onto spindle shaft (max.14 mm in
diameter).The hollow shaft is fixed to the spindle shaft by hexagon screw and secured by power grip.
This way, the SPA is mounted in an overhung position and secured against torsion at rear of the housing by the
attached spreader pin. The SPA features an absolute multiturn sensing system capable of detecting the position
after several spindle turns even in powerless state. Position data will be retained even in case of power failure
(min. 10 years).
The current position value is indicated in the two-line backlit LCD display (2x 5 digits, numeric), optionally
together with the target transmitted by the control (master). Two arrows indicate the editing engineer the
direction the spindle must be turned to for aligning actual value with target. As soon as the actual value is in
alignment with the target and within the permitted tolerances, the target will disappear. By corresponding master
parameterization the display can be turned by 180° enabling vertical respectively horizontal installation. SPAs are
networked by M8 connector, power supply is by the same cable directly from master. SPA parameterization by
master only.

indication „target“

arrows indicating the required direction for target/actual value alignment

indication „actual value“

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2. Terminal assignment

Pin Assignment Core colour DIN47100

Pin 1 Tx/Rx-, RS485 white orange

Pin 2 Tx/Rx+, RS485 brown brown

Pin 3 sensor supply +24 V yellow red

Pin 4 sensor supply 0 V green black

male connector M8 female connector M8

IEC757

N 150

1

2

3

4

1

2

3

4

Pin Assignment Core colour DIN47100

IEC757

Pin 1 sensor supply +24 V yellow red

Pin 2 sensor supply 0 V green black

Pin 3 -- -- --

Pin 4 Tx/Rx+, RS485 brown brown

Pin 5 Tx/Rx-, RS485 white orange

male M16 female M16

3

4

2

1

5

3

2

1

4

5

Connect power supply that is free from interference emission. The supply must not be used as
parallel supply of drives, shields, magnetic valves, etc.
Apply DC according to the terminal assignment
Power supply: 24 VDC ±20 %

Shield

Use shielded cables only. Ground of the shield must be provided at the machine (two examples
corresponding to the cable applied, see drawings).

Abschirmungsanschluss

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3. Interface

3.1. Interface data

Type: RS485

Baudrate: 19200

Parity: No

Data bits: 8

Stop bits: 1

Handshake: No

Checksum: Yes (CRC)

Timeout reply*: 1...16 ms

BUS switching time**: <0,1 ms

3.2. Protocol

The spindle position display operates with ASCII protocol (clear text protocol). Depending on the command, the
protocol data package varies between 5 and 17 bytes.

Byte Hex-Code Significance Parameters

1 01H SOH = start of heading permanent 01h
2 XXh Adr = address/identifier 00 ... 31dez + 20h Offset (identifier 00 = 20h)
3 XXh Cmd = command code Defined commands

4-n [XXh..XXh] [Data] = data 20h-7Fh
n+1 04h EOT = end of transmission Permanent 04h
n+2 XXh CRC = checksum 00h ... FFh

3.3. Checksum (Cyclic Redundancy Check)

For optimized error-free data transmission the CRC byte is added after the footer token (EOT, end of
transmission) to the string to be transferred. Upon receiving a command the CRC byte transmitted is
crosschecked with the auto-calculated CRC byte.

Algorithm:

1) Reset CRC byte.

2) Rotate CRC byte by 1 bit to the left.

3) Link result to first data byte XOR.

4) Rotate result by 1 bit to the left.

5) Link result to the second data byte XOR.
:
x) Rotate result by 1 bit to the left.
y) Link result to the last data byte (ever 04H) XOR.
z) Add result as CRC after the footer token (04H) to the transmitted string.

Note:

Example:

String less CRC = 01h 20h 43h 04h
CRC-Byte = 0Ah

0000 0000 RL 0000 0000 XOR 0000 0001 (01h) = 0000 0001

0000 0001 RL 0000 0010 XOR 0010 0000 (20h) = 0010 0010

0010 0010 RL 0100 0100 XOR 0100 0011 (43h) = 0000 0111

0000 0111 RL 0000 1110 XOR 0000 0100 (04h) =

Legend: RL = rotate left; XOR = antivalence link

1101 0000 RL 1010 0001 Important: Bit 7 is shifted in bit 0 during rotation

To avoid bus collisions a minimum timeout reply of 1 ms (default

*

parameter) is to be kept, i.e. the time elapsed between transmitting the
last bit of the query until start transmitting the 1st bit of the N 150 reply.
The operator should see that due to the minimum timeout reply of 1 ms the
bus switching time after having transmitted the last bit must not exceed 1
ms.

** The BUS switching time is the time the SPA requires to be ready again

for transmission receipt after having replied to host.

0000 1010

= CRC

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3.4. Data transmission properties

For reasons of compatibility, within the complete multicon system the data amount is always the same (see table
in chapter 6), no matter how many digits are provided in the display. For example, command “R” (read actual
value) comprises a transmitted data amount of 6 bytes, but only 5 digits are indicated in the display.

3.5. Broadcast commands

Some specific commands are designated so-called broadcast commands. As soon as the master broadcasts a
command to identifier 99, the command is addressed to every N 150 in the network. Each individual spindle
position display will accomplish the respective command but will not respond any confirmation to master.

3.6. Data saving

Specific parameters are saved in EEPROM (1.000.000 writing cycles). Data saving is via interface upon every
parameter transmission to SPA.

Important:

There should not be a cyclic transmission of these parameters to SPA but only if necessary, for example in case
of parameter alteration. The relevant parameters saved in EEPROM are listed in the charts in chapter
“Command explanations” or “Overview on commands”.

4. Command explanations

4.1. General information

The following is describing the individual interface commands broken down into the four groups below:

- operating commands [ commands required during operation ]

- parameter commands [ commands for SPA parameterization ]

- identifier commands [ commands to indicate or alter the device identifier (address)]

- specific commands [ commands for specific functions as device reset or version number readout]

The following abbreviations are applied:

SOH = Start of heading (header token)
EOT = End of transmission (footer token)
Adr = Device identifier /address, including offset 20h
Cmd = Command
Data = Data transmitted or received

4.2. Operating commands

Command

code

C (43h) 3 / 11 X - - - Check if current value = target
R (52h) 6 X - - - Read current value
S (53h) 8 X X - X Read/write target
U (55h) 6 X X - - Offset
V (56h) 2 X X X X Read/write profile number
Z (5Ah) 6 X X X X Set preset

t (74h) 6 - X - - Transmit tool number
u (75h) 6 - X - - Transmit optional column of figures

Data length

in bytes

read write Broad-

cast

Save in

EEPROM

Significance

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4.2.1. Check Position „C“ (43h)

This command provides the alignment status of target versus actual value. If the actual value is within the target
tolerance window, the response will be „o“ (6Fh) for OK together with the current profile number. If the actual
value is outside the tolerances, „x“ (78H) followed by the current profile number will be replied.

Example: (active profile number = 05)

Transmission

SOH Adr Cmd EOT CRC

01h 20h 43h 04h 0Ah

Response if actual value is within the tolerances:

Response

Response in case of actual value is outside the tolerances:

Response

SOH Adr Cmd Stat. Profile no.=05 EOT CRC

01h 20h 43h

6Fh 30h 35h

04h A5h

SOH Adr Cmd Stat. Profile no.=05 EOT CRC

01h 20h 43h

78h 30h 35h

04h 1D

4.2.2. Read actual value „R“ (52h)

This command is utilized to read the 5-digit actual value (bottom line of display). The amount of data is always 6
bytes. In case of a negative value, the “minus“ sign (2Dh) together with 5 data bytes is replied. Positive values
are represented by 6 data bytes without sign. Values of less than 5 (4) digits will come with preceding zeroes.
Please note that N 150 provides a 5-digit actual value.

Example: Actual value = -32.50

Transmission

Response

SOH Adr Cmd EOT CRC

01h 20h 52h 04h 40h

SOH Adr Cmd Actual value = –32.50 EOT CRC

01h 20h 52h

2Dh 30h 33h 32h 35h 30h

04h 54h

4.2.3. Read / write target (profile) „S“ (53h)

This command is utilized to read the presently active target (profile value) respectively to read or write a specific
target. Data are composed by profile number (2 bytes) and target (6 bytes). Note: Negative targets are
transmitted as 5-digit number (see example 3). Please consider that SPA targets comprise 5 digits only.

Example 1: Read active target (profile number = 12; target = 12.50)

Transmission

Response

Response upon clearing all targets:

Response

Example 2: Read specific target (profile number = 17; target = 12.50)

Transmission

Response

Example 3: Write specific target (profile number = 17; target = -12.50)

s

Transmission

Response

SOH Adr Cmd EOT CRC

01h 20h 53h 04h 2A

SOH Adr Cmd Profile no. = 12 Target = 12.50 EOT CRC

01h 20h 53h

31h 32 30h 30h 31h 32h 35h 30h

SOH Adr Cmd Profile no. =

Target = FFFFFFh EOT CRC

04h 3E

FFh

01h 20h 53h

3Fh 3F 3Fh 3Fh 3Fh 3Fh 3Fh 3Fh

04h 2Ah

SOH Adr Cmd Profile no. = 17 EOT CRC

01h 20h 53h

31h 37h

04h 16h

SOH Adr Cmd Profile no. = 17 Target = 12.50 EOT CRC

01h 20h 53h

31h 37h 30h 30h 31h 32h 35h 30h

04h BCh

SOH Adr Cmd Profile no. = 17 Target = -12.50 EOT CRC

01h 20h 53h

31h 37h 2Dh 30h 31h 32h 35h 30h

04h FBh

SOH Adr Cmd Profile no. = 17 Target = -12.50 EOT CRC

01h 20h 53h

31h 37h 2Dh 30h 31h 32h 35h 30h

04h FBh

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4.2.4. Read /write offset „U“ (55h)

This command is utilized to read or write the offset that is added to the true actual value. First however the
function must be enabled in command bit parameter ‚a’ (61h).

Example 1: Read offset

Transmission

Example 2: Write offset

Transmission

Response in both examples:

Response

SOH Adr Cmd EOT CRC

01h 20h 55h 04h 26h

SOH Adr Cmd Data (offset = –20,00) EOT CRC

01h 20h 55h

2Dh 30h 32h 30h 30h 30h

04h C3h

SOH Adr Cmd Data (offset = –20,00) EOT CRC

01h 20h 55h

2Dh 30h 32h 30h 30h 30h

04h C3h

4.2.5. Read / write profile number „V“ (56h)

This command is utilized to read the presently active profile number or to alter the profile.

Example 1: Read active profile (active profile number = 38)

Transmission

Response

Response after reset upon having cleared all profiles:

Response

Example 2: Transmit profile (new profile number = 17)

Transmission

Response

Example 3: New profile to all N 150 by broadcast (identifier = 99 (83h); new profile number = 17)

Transmission

Response not confirmed

To check whether the new profile has been adopted by all N150 utilize check command „C“ (43h).

SOH Adr Cmd EOT CRC

01h 20h 56h 04h 20h

SOH Adr Cmd Profile no. = 38 EOT CRC

01h 20h 56h

33h 38h

04h 28h

SOH Adr Cmd Profil-Nr. = FF EOT CRC

01h 20h 56h

3Fh 3Fh

04h 16h

SOH Adr Cmd Profile no. = 17 EOT CRC

01h 20h 56h

31h 37h

04h 3E

SOH Adr Cmd Profile no. = 17 EOT CRC

01h 20h 56h

31h 37h

04h 3E

SOH Adr Cmd Profile no. = 17 EOT CRC

01h 83h 56h

31h 37h

04h 04

N 150

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4.2.6. Set actual value as preset „Z“ (5Ah)

Command “Z” is utilized to set the actual value at any optional value. The required position value is transmitted
to SPA. The SPA will calculate a so-called “preset offset” value relating to the true absolute encoder position.
When calculating the preset offset, any programmed offset transmitted by command “U” will be considered, so
that after having accomplished command “Z” the current value always equals the preset.
Note: When altering the resolution (see command „a“) from 1/100 to 1/10 or vice-versa, any already assigned
preset must be assigned anew. The internally calculated offset is available in the resolution previously
programmed.

The indicated actual value is composed as follows:

actual value

Actual value
Actual value

Anz

Abs

indicated actual value for readout by interface

internal absolute actual value.

= actual value

Anz

+ preset offset + offset

Abs

Preset offset offset generated by command „Z“.
Offset supplementary offset defined by command „U“. This function however must be enabled in

command bit parameter ‚a’ (61h), otherwise applies offset = 0.

Example 1: Readout presently active preset

Transmission

Response

SOH Adr Cmd EOT CRC

01h 20h 5Ah 04h 38h

SOH Adr Cmd preset = 2.50 EOT CRC

01h 20h 5Ah

30h 30h 30h 32h 35h 30h

04h 27h

Example 2: Set actual value as preset value (preset = 17.25)

Transmission

Response

SOH Adr Cmd preset = 17.25 EOT CRC

01h 20h 5Ah

SOH Adr Cmd preset = 17.25 EOT CRC

01h 20h 5Ah

30h 30h 31h 37h 32h 35h

30h 30h 31h 37h 32h 35h

04h 09h

04h 09h

Example 3: Set actual value as preset in all SPAs by broadcast command

Transmission

Response not confirmed

SOH Adr Cmd preset = 17.25 EOT CRC

01h 83h 5Ah

30h 30h 31h 37h 32h 35h

04h AAh

4.2.7. Indicate optional column of figures in upper line „t“ (74h)

This command is utilized to indicate a 5-digit number in the upper line of the display. The numerical column is
indicated less dot respectively comma. Preceding zeroes as well as both arrows are suppressed. The bottom
line still indicates the actual value.
The numerals are indicated in the display until any command except „t“, „u“ or „R“ is received by interface. The
number will be retained after power failure.

Example: (column of figures = 054321)

Transmission

Response

SOH Adr Cmd Column of figures = 054321 EOT CRC

01h 20h 74h

SOH Adr Cmd Column of figures = 054321 EOT CRC

01h 20h 74h

30h 35h 34h 33h 32h 31h

30h 35h 34h 33h 32h 31h

04h C6h

04h C6h

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4.2.8. Indicate optional column of figures in bottom line „u“ (75h)

The command is utilized to indicate a 5-digit column of figures in the bottom line of the display. The number is
indicated less dot respectively comma. Preceding zeroes as well as both arrows are suppressed. The upper line
still indicates the actual target or column of figures.
The column is indicated until any optional command except „t“, „u“ or „R“ is received by the interface. The
number will be retained after power failure.

Example: (column of figures = 012345)

Transmission

Response

Note:

Command “t” in conjunction with command “u” enables indication of a 10-digit number.
Both columns are not saved in EEPROM.

SOH Adr Cmd Column of figures = 012345 EOT CRC

01h 20h 75h

SOH Adr Cmd Column of figures = 012345 EOT CRC

01h 20h 75h

30h 31h 32h 33h 34h 35h

30h 31h 32h 33h 34h 35h

04h B6h

04h B6h

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4.3. Parameter commands

Command

code

a (61h) 5 X X - X Read/write general parameters
b (62h) 8 X X - X Parameter: Tolerance compensation, window
c (63h) 8 X X - X Parameter: scaling of spindle pitch

i (69h) 1 X X X X Parameter: mm / inch

4.3.1. Read / write bit parameter „a“ (61h)

To exploit maximum memory capacity, several parameters are put together and transferred as “data pack”
under the following parameter codes:

Data1: 1 0 X X 0 X 0 X
┬ ──┬── ─┬─ ─┬─
│ │ │ └─── positioning direction 0/1 (UP/DOWN)
│ │ └─────── counting direction 0/1 (UP/DOWN)
│ └──────────── arrows 0/1/2/3 (UP/DOWN/UNI/OFF)
└──────────────── 1

Data2: 1 0 0 X 0 X 0 X
┬ ┬ ─┬─ ─┬─ ─┬─
│ │ │ │ └─── round actual value 0/1 (OFF/ON)
│ │ │ └─────── turn display 0/1 (OFF/ON)
│ │ └─────────── offset 0/1 (OFF/ON)
│ └────────────── reserved
└──────────────── 1

Data3: 1 0 0 0 0 X X X
┬ ───┬─── ┬ ─┬─
│ │ │ └─── suppress target 0/1/2 (ON/OFF/EVER)

│ └─────────── reserved
└──────────────── 1

Data4/5: 0 0 1 1 0 0 0 0
───┬───
└───── reserved

Important: Only the bits marked ‘X’ may be altered. The permanent parameters „1“ and „0“ must not be altered
since this might create a control token ( tokens < 20h) what is not permitted in ASCII protocol.

Example 1: read bit parameter (data1 to data3 = 80h; data4 to data5 = 30h)

Transmission

Response

Example 2: write bit parameter (positioning direction = down; turn display = On)

Transmission

Response

Data amount

in bytes

read write Broad-

cast

Save in

EEPROM

Significance

│ │ └────── resolution 0/1 (1/100;1/10)

SOH Adr Cmd EOT CRC

01h 20h 61h 04h 4E

SOH Adr Cmd Data1 Data2 Data3 Data4 Data5 EOT CRC

01h 20h 61h

SOH Adr Cmd Data1 Data2 Data3 Data4 Data5 EOT CRC

01h 20h 61h

SOH Adr Cmd Data1 Data2 Data3 Data4 Data5 EOT CRC

01h 20h 61h

80h 80h 80h 30h 30h

81h 84h 80h 30h 30h

81h 84h 80h 30h 30h

04h F1

04h 91h

04h 91h

bit parameter default

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Significance of parameter „a“

Positioning direction
Positioning direction

This parameter defines the direction the target is aimed for. Tolerances that occur for example at cogwheels,
joints, shafts etc during a precise positioning operation requires a tolerance compensation. The tolerance
compensation is proceeded by aiming for the target position always from the same direction utilizing so-called
loops. Loops mean that the target position is first crossed by a defined distance and then aimed for again from the
opposite direction. The parameter for the crossing distance is programmed by command “b”. Whether a loop is
required or not is indicated by the arrows in the display. A flashing arrow means tolerance compensation required.
Upon reaching the turning point the direction changes and the arrow stops flashing. Targets allowing direct
positioning are marked by a non-flashing arrow. Upon achieving the target within the programmed tolerances (see
command “b”) the arrows will not disappear until the required tolerance compensation has been completed.

00 = Up Direct positioning if target position > current position; otherwise proceed tolerance compensation
01 = Down Direct positioning if target position < current position; otherwise proceed tolerance compensation

Counting mode
This parameter assigns either „ascending“ or „descending” counted values in relation to the shaft’s direction of
rotation. Following parameters are available:

00 = Up Clockwise rotation, ascending counted values
01 = Down Clockwise rotation, descending counted values

Arrows
This parameter relates to the arrows in the display that indicate the operator the direction (to the right or to the left)
of the new positioning operation. Following parameters are available:

00 = Up If current value < target = arrow to the right; actual value > target = arrow to the left
01 = Down As „Up“, but inverted arrows direction
10 = Uni If actual value ≠ target arrows ever indicated
11 = Off Arrows ever hidden

Rounding the actual value
This means that the actual value being within the tolerances but still differing from the target is rounded up or
down to the target value as soon as the shaft remains idle for approx. 3 seconds. The rounding operation is only
visualized, the true internal actual value remains unchanged. For actual value readout by serial interface
(command “R”) the true, not rounded actual position value is provided. The true actual value will immediately
reappear on the display upon key actuation. If the position is still within the tolerance window the rounding
operation will be repeated after 3 seconds.
Note: In operating mode „Suppress target = Ever“ the target is deactivated and the SPA serves as pure actual
value display with disabled rounding function. The following parameters are available:
0 = Off Round actual value disabled
1 = On Round actual value enabled

Turn display
This parameter is utilized to turn the display by 180°.

0 = Off Display readout with standard mounting, i.e. display above keypad
1 = On Display readout with inverted mounting, i.e. display below keypad

Offset

The command „U“ is utilized for programming the offset that is added to actual value and actual target. This
parameter defines whether the offset is considered in the calculation.

0 = Off Offset disabled. Any offset previously transmitted is NOT added neither to actual value nor target.
1 = On Offset enabled. The offset is added to actual value and actual target.

Suppress target

This parameter defines when to indicate the target in the upper line of the display.
0 = On Target indicated if target ≠ current value.
1 = Off Target ever indicated, also if target = current value. Indicate arrows too if target ≠ current value.
2 = Ever Target and arrows ever suppressed.

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Resolution

This parameter defines the resolution of the actual value. Upon altering the resolution the decimal point is shifted
correspondingly by one digit to the right or left, same applies also to actual value and target. The target values
however are not converted correspondingly but only the decimal point is shifted. When editing the machine please
pay attention to defining the resolution first so that the target values are transmitted to the SPAs with the
corresponding resolution.

0 Resolution 1/100 mm resp. 1/1000 inch visualized in the display: 000.00 mm resp. 00.000 inch
1 Resolution 1/10 mm resp. 1/100 inch visualized in the display: 0000.0 mm resp. 000.00 inch

4.3.2. Read /write tolerance compensation and tolerance window, „b“ (62h)

This command is utilized to read or write the parameters tolerance compensation and tolerance window.

Example 1: Read parameter (tolerance compensation = 0.15; tolerance window = 0.25)

Transmission

Response

SOH Adr Cmd EOT CRC

01h 20h 62h 04h 48h

SOH Adr Cmd Tolerance compensation=0.15 Tolerance window=0.25 EOT CRC

01h 20h 62h

30h 30h 31h 35h 30h 30h 32h 35h

04h AAh

Example 2: Write parameter (tolerance compensation = 1.30; tolerance window = 5.00)

Transmission

Response

SOH Adr Cmd Tolerance compensation =1.30 Tolerance window r=5.00 EOT CRC

01h 20h 62h

SOH Adr Cmd Tolerance compensation =1.30 Tolerance window r=5.00 EOT CRC

01h 20h 62h

30h 31h 33h 30h 30h 35h 30h 30h

30h 31h 33h 30h 30h 35h 30h 30h

04h 20h

04h 20h

4.3.3. Read / write spindle pitch (scaling factor) „c“ (63h)

This command is utilized to read or write the scaling factor of the spindle pitch within the range from
0,0000001...9,9999999. The decimal point is not transmitted.

How to calculate the scaling factor:

Resolution per turn: 14,40 mm
Spindle pitch: 4,00 mm

Resolution per turn 14,40

Example 1: Read scaling factor (scaling = 1.000000)

Transmission

Example 2: Write scaling factor (scaling = 0.2777777)

Transmission

pitch 4,00
Scaling factor = ──────────── = ───── = 0,2777777

SOH Adr Cmd EOT CRC

01h 20h 63h 04h 4Ah

Response

Response

SOH Adr Cmd scaling = 1.0000000 EOT CRC

01h 20h 63h

SOH Adr Cmd scaling = 0.2777777 EOT CRC

01h 20h 63h

SOH Adr Cmd scaling = 0.2777777 EOT CRC

01h 20h 63h

31h 30h 30h 30h 30h 30h 30h 30h

30h 32h 37h 37h 37h 37h 37h 37h

30h 32h 37h 37h 37h 37h 37h 37h

04h 4B

04h 30h

04h 30h

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N 150

4.3.4. Read / write measuring unit „i“ (69h)

The command is utilized to read or write the measuring unit in mm or inches.

Data = 0 (30h) = mm
Data = 1 (31h) = inch

Example 1: Read parameter (setting = mm)

Transmission

Response

Example 2: Change measuring unit to inch

Transmission

Response

Example 3: Write measuring unit mm into all N 150 by broadcast command (Identifier=99)

Transmission

Response Not confirmed

Important: Parameters are programmed in mm and auto-converted by N 150 into inches upon displaying the
position values.
.

SOH Adr Cmd EOT CRC

01h 20h 69h 04h 5E

SOH Adr Cmd Data EOT CRC

01h 20h 69h

30h

04h D0h

SOH Adr Cmd Data EOT CRC

01h 20h 69h

31h

04h D2

SOH Adr Cmd Data EOT CRC

01h 20h 69h

31h

04h D2

SOH Adr Cmd Data EOT CRC

01h 83h 69h

30h

04h CDh

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N 150

4.4. Identifier commands

Command

code

A (41h) 2 X X X X Assign or indicate device identifier
B (42h) 2 - - - - SPA feedback in addressing mode

4.4.1. Assigning device identifiers in the network „A“ (41h)

This command is creating an automated process where the device identifier is assigned in successive order to
every single N 150 upon commissioning of the system. The first identifier to be assigned is broadcasted to all
networked N 150 as follows:

Transmission

All N 150 now show the identifier just transmitted and that is to be assigned in the upper line of the display. The
bottom line indicates the device-specific identifier. o enter the new identifier, the shaft of the respective N 150
must be turned by at least a half (direction does not matter).The identifier is now adopted and appears in the
bottom line of the display (as device-specific identifier). Both identifiers are now identical. As soon as the shaft is
in idle position again and after having elapsed 3 seconds, N 150 will transmit to master the following
acknowledging command „B“ (42h):

Transmitted

To master

The Master may now transmits command „A“ with the next identifier to be assigned as previously described.
This way, the respective (successive) identifiers are automatically assigned to all networked N 150, one after the
other.

Important: The confirmatory command „B“ transmitted by N 150 to master will be repeated after 3 seconds
provided the master has not previously transmitted another „A“ command.

Indicate identifier in the display „A“ (41h)

This command less parameters as broadcast command (address/Identifier=99) will make every networked N
150 indicate the device-specific identifier in the bottom line of the display. The upper line is blind.
This command is a designated broadcast command.

Transmission

Response Not confirmed

SPA remains in this mode until being switched off and on again or until transmission of another command
except „A“, „R“, „t“ or „u“.

If this command is transmitted to a valid device identifier (except 99) without any parameters, the respective SPA
will return to standard operating mode and reply the actual device identifier.

Transmission

Response

Data amount

in bytes

SOH Adr Cmd identifier = 01 EOT CRC

01h 83h 41h

SOH Adr Cmd identifier = 01 EOT CRC

01h 21h 42h

SOH Adr Cmd EOT CRC

01h 83h 41h 04h 80h

SOH Adr Cmd EOT CRC

01h 21h 41h 04h 0Ah

SOH Adr Cmd Adr=01 EOT CRC

01h 21h 41h

read write Broad-

cast

30h 31h

30h 31h

30h 31h

04h B4h

04h 86h

04h 9Eh

Save in

EEPROM

Significance

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N 150

Extended identifier command „AX“ (41h,58h)

This extended command is utilized to address individual SPAs in the bus network in a similar way as described
above. By broadcast command the identifier to be assigned is transmitted to all networked SPAs as follows:

Transmission

SOH Adr Cmd Cmd2 Identifier = 01 EOT CRC

01h 83h 41h 58h

30h 31h

04h 40h

Similar to the standard command all N 150 now indicate the identifier just transmitted and that is to be assigned
in the upper display line. Adopting the identifier is the same way. However, contrary to the above there won’t

be
any acknowledging „B“ replied. Checking whether the new identifier has been adopted is up to master,, for
example utilizing command “R” (read actual value). The R-command is transmitted with the corresponding
identifier to the N 150. If the addressed SPA is confirming that the assignment was successful, the master can
proceed with next identifier. Regarding other commands the display of the respective SPA switches to standard
operation.

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4.5. Specific commands

Command

code

K (4Bh) - - X X X Specific command: Profile reset (clear)
Q (51h) 1 - X X X Specific command: SPA reset
X (58h) 2 / 4 / 8 X - - - Specific command: Read device data

4.5.1. SPA profile reset „K“ (4Bh)

This command is clearing all previously programmed profiles.

Example 1: profile reset of a specific N SPA

Transmission

Response

Example 2: profile reset in all SPA by broadcast command (identifier=99)

Transmission

Response Not confirmed

Important: After profile reset all profile data are set to FFFFFFhex, the current profile number to FFhex.
The SPA display now is indicating 5 hyphens instead of target.

4.5.2. N 150 restore default „Q“ (51h)

This command restores default either of individual or collective parameters.

Data = q (71h) = Parameters restore default
Data = t (74h) = Device identifier = 98
Data = x (78h) = Multiturn counter reset to 0. No singleturn reset possible.
Data = ∆ (7Fh) = Enable all above functions.

Note: No profile reset. Profile reset by command „R“.

Example 1: Restore default in specific SPA

Transmission

Response

Example 2: Restore default in all SPA by broadcast command (identifier=99)

Transmission

Response Not confirmed

Data amount

in bytes

SOH Adr Cmd Data EOT CRC

01h 20h 4Bh

SOH Adr Data EOT CRC

01h 20h

SOH Adr Cmd Data EOT CRC

01h 83h 4Bh

SOH Adr Cmd Data EOT CRC

01h 20h 51h

SOH Adr Data EOT CRC

01h 20h

SOH Adr Cmd Data EOT CRC

01h 83h 51h

read write Broad-

cast

04h C6h

7Fh

04h 52h N 150 replies by standard response ‚o’ (6Fh) = OK

6Fh

04h DBh

7Fh

04h AEh

7Fh

04h 52h N 150 replies by standard response ‚o’ (6Fh) = OK

6Fh

04h B3

7Fh

Save in

EEPROM

Significance

N 150

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N 150

4.5.3. Read version, type or serial number „X“ (58h)

This command is utilized to read version number, device type or serial number. The following sub-commands
are available:

Data = V (56h) = read version
Data = T (54h) = read device type
Data = S (53h) = read serial number
Example 1: Read version number

Transmission

Response

Example 2: Read device type (device type = N 150; software version = 01)

Transmission

Response

Code configuration of the transmitted device type:

1 0 0 1 0 0 0 0 1 0 0 0 0 0 0 1 = 90 81 hex

┬ ──────┬────── ┬ ───────┬─────
│ │ │ └─────── software number 01h = software. 01
│ │ └──────────────── permanent 1
│ └────────────────────────── device type 10h = N 150
└────────────────────────────────── permanent 1

Example 3: Read serial number

Transmission

Response

Code configuration of the transmitted serial number:

The Low-Nibble (lower 4 bits of a byte) of the 8 data bits received equal together a 4 byte value comprising the
serial number.
The serial number is composed by date and time of production. Since also the seconds are coded and by
assigning only one number per second the serial number is unique.

Example: serial number for 01.06.2005 16:58:36 = 15 83 0E A4 hex

X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X bit position
J J J J J J M M M M T T T T T h h h h h m m m m m m s s s s s s content
0 0 0 1 0 1 0 1 1 0 0 0 0 0 1 1 0 0 0 0 1 1 1 0 1 0 1 0 0 1 0 0 example = 15 83 0E A4 hex

─────┬───── ────┬──── ────┬──── ─────┬───── ──────┬────── ─────┬─────
│ │ │ │ │ └─────── seconds 10
│ │ │ │ └──────────────────── minutes 11
│ │ │ └───────────────────────────────── hours 1
│ │ └──────────────────────────────────────────── day 0
│ └────────────────────────────────────────────────────── month
└───────────────────────────────────────────────────────────────── year 00
│

01.06.05 16:58:36 <──────┘

SOH Adr Cmd Data EOT CRC

01h 20h 58h

56h

04h D8h

SOH Adr Cmd Data Version number = 2.00 EOT CRC

01h 20h 58h 56h

20h 32h 30h 30h

04h FAh

SOH Adr Cmd Data EOT CRC

01h 20h 58h

54h

04h DCh

SOH Adr Cmd Data Type EOT CRC

01h 20h 58h 54h

90h 81h

04h 26h

SOH Adr Cmd Data EOT CRC

01h 20h 58h

53h

04h D2h

SOH Adr Cmd Data Kodierte Seriennummer = 07090EA4 EOT CRC

01h 20h 58h 53h

30h 37h 30h 39h 30h 3Eh 3Ah 34h

04h 20h

0100 = 24h = 36d
1010 = 3Ah = 58d
0000 = 10h = 16d
0001 = 01h = 01d
0110 = 06h = 06d

0101 = 05h = 05d

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N 150

5. Error warnings

5.1. CRC error

Upon recognizing a CRC error in a transmitted command the SPA will respond as follows:

Response

SOH Adr Error EOT CRC

01h 20h 65h 04h 46h Error = „e“ (65h) = CRC error

5.2. Format error

Upon recognizing a format error (incorrect length of protocol or void command (Cmd) in a command transmitted
the SPA will respond as follows:

Response

SOH Adr Error EOT CRC

01h 20h 66h 04h 40h Error = „f“ (66h) = Format error

6. Overview on commands

The following chart shows in alphabetical order all available commands (Cmd) as well as options regarding read
and write (parameterization).

Command

code

a (61h) 5 X X - X Read / write general parameter

b (62h) 8 X X - X Parameter: tolerance compensation, window

c (63h) 8 X X - X Parameter: scaling of spindle pitch

i (69h) 1 X X X X Parameter: mm / inch

t (74h) 6 - X - - Transmit tool number

u (75h) 6 - X - - Transmit optional column of figures

A (41h) 2 X X X X Assign or indicate device identifier

C (43h) 3 X - - - Check if actual value = target

K (4Bh) - - X X X Profile reset

Q (51h) 1 - X X X Specific command: N 150 reset

R (52h) 6 X - - - Read actual value

S (53h) 8 X X - X Read / write target

U (55h) 6 X X - - Offset

V (56h) 2 X X X X Read / write profile number

X (58h) 4 X - - - Specicfic command: read version number

Z (5Ah) 6 X X X X Set preset

Data amount

in bytes

read write Broadcast

Save in

EEPROM

Significance

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7. Technical data

Technical data - electrical ratings

Supply voltage 24 VDC ±10 %
Current consumption ≤30 mA
Display LCD, 7 segments, two lines, backlit
Sensing principle Absolute multiturn sensing
Sensing range -99,99...+999,99 mm

-9.999...+99.999 inch
Number of steps/revolution 1440
Number of revolutions 4096 / 12 bit
Spindle pitch ≤14 mm
Interface RS485 (ASCII protocol)
Data saving Parameter buffer: EEPROM
Actual value buffer: >10 years by
integrated 3 V Lithium battery
Programmable parameters Display position horizontal/vertical
Measuring unit mm/inch
Counting direction
Spindle pitch
Spindle tolerances
Positioning direction
Directional arrows
Tolerance window
Rounding
Standard DIN EN 61010-1 Protection class II
Overvoltage category II
Pollution degree 2
Interference emission DIN EN 61000-6-3
Interference immunity DIN EN 61000-6-2
Approvals UL/cUL

Technical data – mechanical design

Hollow shaft ø14 mm
Operating speed ≤600 U/min (short-term)
Protection DIN EN 60529 IP 65
Operating temperature -10...+50 °C
Storage temperature -20...+70 °C
Relative humidity 80 % not condensing
Torque support Torque pin at housing
E-connection - male/female 4-pin connector M8

- cable output (30/15 cm) with male/female 4-pin connector M8
Housing with hollow shaft for direct shaft mount
Dimensions W x H x L 37 x 75 x 45 mm
Mounting by hollow shaft
Weight approx. 120 g
Material Polyamide black, UL 94V-0

N 150

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7.1. Dimensions

Optional display
position

75°

4.8
Torque pin

N 150

Cable outputConnect or output

6

0.5x 45°

10

75

22

20.5

16

30.15

Pin M4

13
26
37

31.8

12.5

ø14H7

ø20

6.5

Connector

45

28

Seal

14

1

Female connector

2:1

ø6h9

52

ø12

A

A

13

60

ø12

8. Part number

Part no. Interface

1 RS485

E-connection

0 Connector output, M8

1 Cable output M8

Voltage supply

3 24 VDC

Display

A At slope
B At face

Hollow shaft

A Hollow shaft ø14 mm

N 150.1 3 A01

150

300

M8
female
connector

M8
connector

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