Starting Up On The Profibus - TR-Electronic C H-80 Serie Benutzerhandbuch

5.3 Starting up on the PROFIBUS

Before the measuring system can be accepted for "Data_Exchange", the master must
firstly initialize the measuring system at start-up. The resulting data exchange between
the master and the measuring system (slave) is divided into the parameterization,
configuration and data transfer phases.
It is checked whether the projected nominal configuration agrees with the actual
device configuration. The device type, the format and length information as well as the
number of inputs and outputs must agree in this check. The user is therefore reliably
protected against parameterization errors.
If the check was successful, it is switched over into the DDLM_Data_Exchange mode.
In this mode, the measuring system e.g. sends its actual position, and the preset
adjustment function can be performed.
WPRM = Wait Parameter
WCFG = Wait Configuration
DXCHG = Data Exchange
Figure 4: DP slave initialization
Printed in the Federal Republic of Germany
11/07/2018
DP Watchdog
Initialization
Configuration not ok
Unlock
Configuration not ok
Parameter not ok
Output length false
TR - ECE - BA - DGB - 0076 - 08
Power On/
Reset
WPRM
Parameter ok
WCFG
Configuration ok
DXCHG
Parameter and Configuration ok
Outputs Receiver/
Return Inputs
Parameter not ok
 TR-Electronic GmbH 2010, All Rights Reserved
Page 75 of 111