Lenze 2102 - Troubleshooting and Fault Elimination

Troubleshooting and fault elimination
7-1
L _^ONMObk
7 Troubleshooting and fault elimination
LED yellow (TxD)LED green (Vcc)
LED yellow (RxD)
Operating-state display of
the controller
Fig. 7-1 LEDs on the fieldbus module 2102IB (see Fig. 4-2 page (^ 4-2) )
Fault Cause Remedy
Controller is switched off.
Display:
• none of the operating-state displays is lit-up
and/or
• green Vcc-LED is blinking
Supply controller with voltage (see corresponding Operating Instructions)
2102IB fie ldbus module is not supplied with voltage
Display:
green Vcc-LED is not flashing or blinking.
• With internal supply from the controller , check the connection to the
controller.
• With external supply, check the voltage at terminals 39 and 59.
A voltage between 15 and 30 V must be applied (see chapter 4.3)
The 2102IB f ie ldbus module has not been initialized with the controller
Display:
green Vcc-LED is blinking.
• Supply controller with voltage (see corresponding Operating
Instructions)
• Check the connection to the controller .
No
communication
with the
controller.
The controller does not receive telegrams.
For a test, let the host send telegram cyclically. This happens, for
instance, with LEMOC2 in online operation.
The yellow RxD-LED must blink when the host sends a telegram.
If the yellow RxD-LED does not blink:
• Check the wiring (see chapter 4.4)
and
• T est whether the host sends telegrams and uses the appropriate
interface.
c
o
n
t
r
o
l
l
e
r
.
The controller does not send telegrams.
For a test, let the host send telegram cyclically. This happens, for
instance, with LEMOC2 in online operation.
The yellow TxD-LED must blink when the controller send a telegram to
the host.
1. Yellow TxD-LED is not blinking:
Parameter for LECOM unit address (C0009) and LECOM baud rate
(C0125) must be the same at t he controller and the host. Check t he
parameters C0009 and C0125 at both units and set them to the same
value if necessary.(Controller-address parameters 00, 10,
¼,90must
not be used.)
2. Yellow TxD-LED is blinking:
• The L ECOM unit addresses (C0009) must be differe nt at all
connected controllers. Correct possibly occurring double addressing.
• Check the wiring to your host.
• With self-developed LECOM-A/B software drivers and RS485
operation, observe the transmission control. After transmitting
signals, the host must return to receive mode after approx. 1 ms.
Controller does
1. Controller sends negative acknowledgement (NAK response):
C
o
n
t
r
o
l
l
e
r
d
o
e
s
not execute
write job
• The operating mo de C0001 is set incorrectly for write access to
codes C0046 a nd C0135.
• Se t paramet e r 3 for operating mode C0001.
j
• The code is defined so that it can only be read. • In general, write job not possible.
2. Controller sends positive acknowledgement (ACK response):
• With 820X, paramet ers can only be changed when the controller is
inhibited (see chapter 6.3).
• Activate controller inhibit
• Controller uses a different parameter set • Changeover of the parameter set; the parameter change is then
activated.
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