IFM RM30 Series Reference guide

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RM30xx Profibus
Brief instructions
efector400

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Contents
The description may contain deviations from the user system, because different
manufacturers or software versions may require different installations!
The description was created based on Siemens S7 version V5.4 + SP4.
1Installation ................................................................................................................................. 3
1.1Software...................................................................................................................................3
1.2Hardware .................................................................................................................................4
1.2.1Overview...........................................................................................................................4
1.2.2Connection .......................................................................................................................4
2Setting the encoder function:.................................................................................................. 6
2.1Selection of the correct encoder:.............................................................................................6
2.2Multiturn encoder Class2 (standard): ...................................................................................... 7
3Setting of the measuring units (measuring range):............................................................... 8
3.1Setting examples.....................................................................................................................9
3.2Setting examples with high and low word.............................................................................. 10
4Hex parameter setting for multiturn class 2:........................................................................ 11
5List of variables, reset and preset......................................................................................... 12
5.1Display variables....................................................................................................................12
5.2Reset:.....................................................................................................................................13
5.3Preset:....................................................................................................................................13
6Other:........................................................................................................................................ 14
Safety instructions
Please read the product description prior to set-up of the unit. Ensure that the product is suitable for
your application without any restrictions.
The unit complies with the relevant regulations and EC directives.
Improper or non-intended use may lead to malfunctions of the unit or to unwanted effects in your
application.
That is why installation, electrical connection, set-up, operation and maintenance of the unit must be
carried out by qualified personnel authorised by the machine operator.

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1 Installation
1.1 Software
1. Download the GSD file from www.ifm.com => Article => [More information] => [Software
download] => Device master data (GSD) file
Example: RM3006 [gsd-DPV0]*
2. Hardware catalogue => Install GSD (first, unzip the ZIP file)
3. Additional Field Devices => Encoder, select ifm Encoder (see chapter 2)
4. Drag the encoder into the project and assign a Profibus address
5. Parameter setting of the encoder (see chapter 3)
6. Set the requested variables (see chapter 5)
*DP-V0: cyclic exchange of data and diagnoses (standard)

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DP-V2: isochronous data exchange, lateral communication between the slaves and time
synchronisation.
1.2 Hardware
1.2.1 Overview
1: voltage supply +Ub /-GND
2: bus IN
3: bus OUT
4: addressing
5: terminating resistor
1.2.2 Connection

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2 Setting the encoder function:
2.1 Selection of the correct encoder:
Class1 Singleturn:
This setting enables only the setting of the direction of rotation at max. 8192 measuring units.
Class1 Multiturn:
This setting enables only the setting of the direction of rotation at max. 8192 measuring units x 4096
revolutions.
Class2 Singleturn:
This setting enables the setting of the direction of rotation, diagnostic function and scaling of the
measuring units at 8192 units.
- Class2 Multiturn (standard):
This setting enables the setting of the direction of rotation, diagnostic function and scaling of the
measuring units at 8192 units x 4096 revolutions.
ifm 2.1 Singleturn / Multiturn
Additionally to Class2: limit switch function, set-up mode.
For details see operating instructions.
ifm 2.2 Singleturn / Multiturn
As in 2.1 but with provision of a speed value.
For details see operating instructions.
Hardware catalogue:

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2.2 Multiturn encoder Class2 (standard):
Configuration (HW Config) => DP Slave Properties => Assigning Parameters
Setting options:
Code sequence: Counterclockwise / clockwise
Class 2 functionality: Enable / disable
Scaling function control: Enable scaling / disable scaling
Measuring units per rev.: 8192 (factory setting)
Total measuring range: 33554432 (factory setting)

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3 Setting of the measuring units (measuring range):
Simplified representation:
Measuring units per rev.
Standard: 8192
Revolutions
Standard: 4096
The resolution per revolution are the pulses which are provided for a revolution. The
revolutions are the further pulses for another entire revolution.
Example: 8192 x 2 revolutions = total: 16384
(1,2,…8192, 8193,…16383, 16384,1,2,…)
Input of the figures:
Maximum units:
8192 units x 4096 revolutions => total measuring range 33 554 432
The revolutions must never be more than 4096, therefore the number of total measuring units
is irrelevant.
Example:
7096 units x 2048 revolutions = 14 532 608 total measuring range => OK.
196 units x 4097 revolutions = 803 012 total measuring range => not OK.
Integers:
Only integer values may be entered.
Example:
8192 units x 2.5 revolutions = 20 480 total measuring range => not OK.

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3.1 Setting examples
The value for the resolution (pulses for a revolution) must be entered for measuring units per
revolution:
The total measuring range must be calculated.
Example.: 2000 pulses x 9 revolutions = 18 000
Standard: Scaling function disabled
Resolution per revolution 8192 x revolutions 4096 = total measuring range 33 554 432
100 units x 2 revolutions (total measuring range 200):
360 units x 1 revolution (total measuring range 360 singleturn):

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3.2 Setting examples with high and low word
For some controllers the value for the total measuring range must be converted to a high
word and a low word.
Standard setting 8192 units x 4096 revolutions:


8192 units x 4096 revolutions => total measuring range 33 554 432
total measuring range 33 554 432 in hex => 0200 0000 hex
high word 0200 hex in decimal => 512
low word 0000 hex in decimal => 0
200 units x 24 revolutions - enable scaling:
200 units x 24 revolutions => total measuring range 4800
total measuring range 4800 in hex => 0000 12C0 hex
high word 0000 hex in decimal => 0
low word 12C0 hex in decimal => 4800
200 units x 1 revolution - enable scaling:
200 units x 1 revolution => total measuring range 200
total measuring range 200 in hex => 0000 00C8 hex
high word 0000 hex in decimal => 0
low word00C8hexindecimal  =>200

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4 Hex parameter setting for multiturn class 2:
Hex parameter setting means that the device-specific parameters are written in HEX coding.
These settings do not have to be made if already set in the device-specific parameters.
Octet 9
Octet 10
Octet 11
Octet 12
Octet13
Octet14
Octet15
Octet16
Octet17
,02 (HEX - CODE)
0000 0010 (BINARY CODE)
Meaning (read from right to left):
Octet 9 bit 0 => 0 = clockwise // 1 counterclockwise
Octet 9 bit 1 => 0 = class 2 disable // 1class 2 enable
Octet 9 bit 2 => 0 = "optional" set-up diagnosis No // 1 Yes

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5 List of variables, reset and preset
5.1 Display variables
Simatic Manager => CPU 315-2 (select) TAB PLC => Monitor/control variable
Display measured value:
Operand ED 100 (for set input address 100...103), display format DEC, and monitor
variables.
Attention: When the properties are changed, a reset must be carried out to display
the current value.

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5.2 Reset:
Operand AD 100 (for set E address 100...103), display format HEX, enter 8 at the
first position in the control value (DW = Double Word) for a value change.
Only a change of the status value from 0 to 8 is detected; no value change is carried
out when the status value of 8 remains 8.
(Attention! Only to be carried out when the encoder is standing still)
Example reset:
OPERAND DISPLAY FORMAT STATUS VALUE CONTROL
VALUE
ED 100 Dec.. L#5120
AD 100 Hex.: DW#0000 0000 8000 0000
OPERAND DISPLAY FORMAT STATUS VALUE CONTROL
VALUE
ED 100 Dec.. L#0
AD 100 Hex.: DW#8000 0000 8000 0000
5.3 Preset:
Operand AD 100 (for set E address 100...103), display format HEX, enter 8 at the
first position in the control value (DW = Double Word) for a value change.
Only a change of the status value from 0 to 8 is detected; no value change is carried
out when the status value of 8 remains 8.
(Attention! Only to be carried out when the encoder is standing still)
Example Preset:
OPERAND DISPLAY FORMAT STATUS VALUE CONTROL
VALUE
ED 100 Dec.. L#0
AD 100 Hex.: DW#0000 0000 8000 0E10
OPERAND DISPLAY FORMAT STATUS VALUE CONTROL
VALUE
ED 100 Dec.. L#3600
AD 100 Hex.: DW#8000 0E10 8000 0E10
3600 (decimal) = 0E10 (hex)

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6 Other:
Byte: 1 2 3 4
Word 1: 8 0 0 0 0 0 0 0 HEX coding
Word0:
Bit: 1000 0000 0000 0000 0000 0000 0000 0000 BINARY CODING
Bit numbers:31…2827…24 23…20 19...16 15…12 11…8 7…4 3…0
Example decimal to binary:
8 bits = 1 byte = octet
16bits = 2 bytes = word
32bits = 4 bytes = double word (DWORD)
64bits = 8 bytes = quadruple word(LongWORD)
31 0
Word 1 Double word
15
Word 0
Multiturn Singleturn