Table of Contents
Advertisement
AS-i LOS Masterbit
Bit 5: 0 = Offline when AS-i configuration error disabled, 1 = enabled
If this bit is set, the AS-i Master immediately switches to the offline phase and stops
AS-i communication when an AS-i configuration error is detected. This results in
the connected AS-i output modules immediately switching to safe mode (outputs
turned off).
AS-i Configuration Mode
Bit 6: 0 = no action, 1 = turn on configuration mode of AS-i Master
Setting Bit 6 switches the AS-i Master to configuration mode. Then for example the
command interface can be used to save an existing AS-i configuration using the
controller.
The rising edge is used for switching. After Bit 7 = 1 in the input flags has indicated
that the AS-i Master is in configuration mode, output bit 6 must be reset again by
the controller.
AS-i Protected Mode
Bit 6: 0 = no action, 1= = turn on protected mode of AS-i Master
After successful configuration of the AS-i Master through the command interface,
the AS-i Master can be switched back to protected mode.
The rising edge is used for switching. After Bit 7 = 0 in the input flags has indicated
that the AS-i Master is in configuration mode, output bit 7 must be reset again by
the controller.
The table shows an AS-i circuit which is in operation. Since there is no AS-i error,
Bits 4 - 7 in the input byte are ZERO.
In the case of AS-i Slave address 1, this is a 4 I/O module. In this module Output
3 is set and Input 1 allocated.
Subject to reasonable modifications due to technical advances.
154
Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-0 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com
Appendix: Example for startup on a Siemens S7
AS-Interface
Copyright Pepperl+Fuchs, Printed in Germany
Advertisement
Table of Contents
