Sentek LMC-J-0040-1 Bedienungsanleitung PDF herunterladen (Seite 18)

IMJ00503 V3E.DOC Page 18 of 40 19.02.2009

4.5.9 Description of the ProfiBus Interface

4.5.9.1. General Information

The Profibus Interface for LMC J 0050 3 operation control is identical with the Standard DP V0

Profibus (with peripherals decentralized) where V0 designates the version. Telegrams are byte

oriented. A byte is also referred to as an Octet in Standard Profibus terminology. From a user’s

point of view, the following types of telegrams are required to accomplish communication:

cyclical data exchange telegrams (DataEx)

diagnostic telegram

sparameter setup telegrams

The various Profibus slaves of identical or similar functionality are described in profiles. These

make it easier for users to work with PB slaves from different manufacturers, which provide

identical functionality. For operation of the LMC J 0050 3 in Profibus mode, the encoder profile

of the Profibus(order no. 3062 of PNO) is supported. The LMCJ0050 3 works as a linear

encoder in this case. Within the available encoder profile capabilities, the LMCJ00503 can

work as a class1 or class2 encoder (recommended). All versions are accomplished via a GSD file.

In addition to specific profile data, the LMCJ00503 provides specific device settings. These

concern laser control and diagnosing aspects.

Profile Class Functionality

Encoder class 1 only input

simple diagnosis

minimal paramter setup options

class 2 input and output (Preset)

extended diagnosis

extended parameter setup options

class 1 see encoder profileLOKE

class 2 additional vendor specific diagnosis and parameter setups

4.5.9.2. Slave eAddress sSetting

Slave address 4 is factory set.

Changes can be made via the Profibus Master.

A desired address can be assigned using the SSA (Set Slave Address) signal.

4.5.9.3. Selection of Operating Mode

DT measuring mode is factory set.

Changes can be implemented in parameter setup mode, using bits 5 ... 7 of parameter setup

byte 26.

1 = 001 = DT

2 = 010 = DW

3 = 011 = DX

4 = 100 = DM

Where modified data are to be written onto the EEPROM, bit 4 of parameter setup byte 26 must

be set to ’1’.

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Sentek LMC-J-0040-1 Bedienungsanleitung Seite 18