BECKHOFF FM33xx - Manual (Page 19)

Functional description
14 FM33xx
Error codes for the thermocouple inputs
Error code Error code argument Description Remedy
1 pulse 0 EEPROM checksum error
1 pulse 1 Inline code buffer overflow
1 pulse 2 Unknown data type
2 pulses - Programmed configuration
3 pulses Faulty channel number. The
first faulty channel is indicated. Back voltage
4 pulses Faulty channel number. The
first faulty channel is indicated. Open circuit
Fieldbus error
The upper three LEDs indicate the operating status of the PROFIBUS. The
red ERR LED flashes with two different frequencies in order to indicate an
error. The sequence of flashes has the same structure as that for the "TC
ERR" LED. The first slow sequence follows the fast flashing, and the
second slow sequence follows this. The error is encoded in the blinks as
follows:
PROFIBUS error codes
I/O-RUN BF DIA Meaning Remedy
on off off Operating state: RUN
Inputs are read and outputs are set.
Everything is operating correctly
on on off,
blinking 1. Bus activity, but slave is not yet
parameterized
2. Bus error in which the outputs
a.) become 0
b.) remain unchanged
- Start master
- Check parameters
(-> Diagnostics data, DIA-LED)
- Check configuration
(-> Diagnostics data, DIA-LED)
off off off Terminal bus cycles synchronized
DP-watchdog switched off, no exchange
of data PLC is in STOP mode, start PLC
off on on No bus activity
- Start master
- Check bus cable
off on off,
blinking Bus error, reaction
Terminal bus cycles are stopped
- Start master
- Check parameters
(-> Diagnostics data, DIA-LED)
- Check configuration
(-> Diagnostics data, DIA-LED)
ERR Meaning Remedy
1 pulse 0
n (n>0) Not enough DP-Cfg data received.
Faulty DP-Cfg data byte. Check DP configuration.
2 pulses 0
n (n>0) Not enough User-Prm data received.
Faulty User-Prm data byte. Check DP user parameters.