BECKHOFF C1120 User Manual
Page 23
C1120 S5 to II/O Lightbus Interface
Beckhoff II/O-Lightbus System
Date 27.06.97
Version 2.1
Page 23 of 52
F3
FRACT TEST
This menu command tests the II/O-Lightbus ring and reports the number of
integrated modules or - in case of errors - the location of a ring interruption.
F4
TRANSMIT CONTROL
With this test it is possible to take the II/O-Lightbus ring under observation, e.g. to
find a ring fault: After start of this test, all modules from the C1120 interface to
the ring interruption show the "CYCLE" LED. After the ring interruption, the
"CYCLE" LED of modules is off, possibly showing the red "ERROR" LED.
Switching back to standard mode is done with a RESET.
During the TRANSMIT CONTROL, the PLC must reside in STOP mode.
F5
PC -> C1120
Transmits the contents of the I/O list to the C1120 interface. The interface will
work properly only after completion of this download, followed by a RESET or
cold boot. During download, the PLC must reside in STOP mode.
F6
C1120 -> PC
Reads the actual I/O configuration from a C1120 interface.
F9
DEBUG MENU
Changes to the debug menu. Occuring II/O-Lightbus errors are reported here.
F10 PREVIOUS MENU
returns to master setup menu.