Sentek LMC-J-0040-1 Instrukcja Użytkownika Pobierz pdf (Strona 30)

IMJ00503 V3E.DOC Page 30 of 40 19.02.2009

Desired settings for the Measuring Time, the trigger edge (“Trigger Level”) and the delay in

triggering (“Trigger Delay”) can be made in the Master’s configuring tool, using the Encoder

profile and Class 2 encoder functionality. Trigger mode must be active.

6.2 Parameters

Settings can be made for each parameter in the Master configuration tool, using the Encoder

profile and Class 2 encoder functionality. For a description, you should refer to the special

configuring tool documentation.

The configuring tool of the Master uses the GSD file as input to create parameters for the slave.

It must have sent these parameters at least once to the slave before the slave will be able to

work in cyclical data exchange mode. The slave has been programmed with enough tolerance to

allow operation with only its seven byte standard PB parameters (i.e. without any profile

adapted user parameters).

Where the Master is unable to send user parameters, the EEPROM’s previously stored

parameters will be used. This may make sense in SSI encoder applications without involvement

of a Profibus. In such cases, the LMC J 0050 3 must be parameterized once, using the Profibus.

The selected parameter settings must then be saved, the Profibus disabled again and the SSI

interface terminal be activated.

6.2.1 Class 2 Function

Selects slave type according to Encoder profile.

6.2.2 Extended Diagnostics

Transmits more than six standard diagnostic bytes (16 bytes as Class 1 Slave, 61 bytes as

Class 2 Slave).

6.2.3 Scaling Function

Scaling Function multiplies a calculated distance value with a selectable factor of 10.0000 to

+10.00000 for desired variations in resolution or for converting output values to other units of

measure. Is able to process up to five decimal places.

6.2.4 Trigger Mode

Trigger Mode enables (1) or disables (0) external triggering.

6.2.5 Trigger Level

Trigger Level defines if measurement will start on a rising (0) or a falling (1) pulse edge.

6.2.6 Trigger Delay

Trigger Dela y sets the time from the arrival of a trigger pulse to the actual beginning of

measurement. It may correspond to any value between 0 and 9999 msec.

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Sentek LMC-J-0040-1 Instrukcja Użytkownika Strona 30