0 mA ... 20 mA

Error identifier = 7

Error identifier = 4

4 mA ... 20 mA

-10 V ... +10 V

E3

iob
(I/O bus)

3

14

1 ... 10

31

31

Timeout in the I/O module

Replace I/O module

E3

iob
(I/O bus)

9

14

1 ... 10

31

31

Overflow diagnosis buffer

New start

E3

iob
(I/O bus)

11

14

1 ... 10

31

31

Process voltage too low

Check process voltage

E3

iob
(I/O bus)

19

14

1 ... 10

31

31

Checksum error in the I/O module

Replace I/O module

E3

iob
(I/O bus)

26

14

1 ... 10

31

31

Parameter error

Check master

E3

iob
(I/O bus)

36

14

1 ... 10

31

31

Internal data exchange failure

Replace I/O module

E3

iob
(I/O bus)

40

14

1 ... 10

31

31

Different hard-/firmware versions in the module

Replace I/O module

E3

iob
(I/O bus)

43

14

1 ... 10

31

31

Internal error in the module

Replace I/O module

E4

iob (I/O bus)

4

14

1 ... 10

3

4 ... 7

Analog value overflow at an analog output

Check output value

E4

iob (I/O bus)

7

14

1 ... 10

1

0 ... 3

Analog value underflow at an analog input

Check input value

E4

iob (I/O bus)

45

14

1 ... 10

31

31

Process voltage is switched off (ON -> OFF)

Process voltage ON

E4

iob (I/O bus)

47

14

1 ... 10

1

0 ... 3

Short circuit at an analog input

Check terminal

E4

iob (I/O bus)

48

14

1 ... 10

1

0 ... 3

Analog value overflow or broken wire at an analog input

Check input value or terminal