Jumpers; Profibus Interface Selection ( X6 ); Clk_Out Selection ( X8 ) - Profichip VPC3+S Manual

3
VPC3+ PROFIBUS Board
3.5

Jumpers

Changing the settings of any DIP-switch or jumper is permitted in power-off
state only. Modifying these settings in power-on state will possibly lead to an
undefined behavior and cause permanent damages.

3.5.1 PROFIBUS Interface Selection ( X6 )

Jumper X6 selects the PROFIBUS interface to be used.
Default (RS485)
Figure 3-13: PROFIBUS Interface Selection

3.5.2 CLK_OUT Selection ( X8 )

Jumper X8 selects whether the output signal CLKOUT2/4 of the VPC3+
clock divider (DEFAULT) or the 48 MHz signal CLK is conducted to pin
X9.27 of the Main Connector (X9).
The frequency of the CLKOUT2/4 signal (12 or 24 MHz) depends on the
setting of DIP-switch S1.8 (DIVIDER):
Default
(12/24 MHz)
Figure 3-14: CLK_OUT Selection
30
Interface
RS485 PROFIBUS interface
Fiber optic interface
CLK_OUT ( X9.27 )
48 MHz
12 / 24 MHz
Revision 1.00
(DEFAULT)
(DEFAULT)
VPC3+S Evaluation Kit
Copyright © profichip GmbH 2009