25
Dat
e of
I
s
sue
04/
22/
2008
Par
t No.
194341
Optical data coupler LS611
Trouble shooting
10.2
PROFIBUS
Error
No.
Erro type
Indicators
Error reasons
Measures
Err
RX
TX
6
No communica-
tion
off
on
off
No response from
connected bus sta-
tions
Analyze interrup-
tion of the PROFI-
BUS connected
7
No communica-
tion
off
off
on
No response from
the opposite side
Analyze the inter-
ruption on the
PROFIBUS of the
opposite side, if
error 6 is indicated
for the opposite
side
8
Reception of
faulty telegrams
(a)
on
on
x
Wrong baud rate
set an on LS611
station
Correct baud rate
9
Reception of
faulty telegrams
(b)
on
on
x
Faulty terminal of
the opposite side
Check and set ter-
minal
10
Reception of
faulty telegrams
(c)
on
on
x
Bus interference on
the opposite side
Remedy source of
interference
11
Key actuation
refused
All baud LEDs are flash-
ing
Keylock is active
Remove the key-
lock (M12 connec-
tor power, pin 2)
C1CP
