Error Classes For I/O Devices - Siemens SIMATIC ET 200eco PN Operating Instructions Manual

Interrupt, error, and system messages
7.5 Diagnostics with STEP 7
7.5.3

Error classes for I/O devices

Error classes and remedies
The table below lists the error classes for the I/O devices.
Table 7- 6 Error classes for the IO devices digital inputs, digital outputs, analog inputs, analog outputs
Error class Error text
00001 1 Short-circuit
B D
00100 4 Thermal overload
B D
00110 6 Wire break
B D
00111 7 Violation of upper
B D
limit
01000 8 Violation of lower
B D
limit
01001 9 Error
B D
10000 16 Parameterization
B D
errors
10001 17 L1+ or 2L+ is missing 
B D
84
Meaning
Short-circuit to M at the sensor

supply line
Output line short-circuited

Load impedance too low

I/O device is overheating

Signal line to a sensor or actuator

interrupted
Sensor or actuator failure

Load impedance too high

The value is above the overrange
Value is below the underrange
Internal I/O device error has occurred
(diagnostic message on channel 0
applies to the whole I/O device).
I/O device is incorrectly
parameterized
Supply voltages missing or too low
Load voltage supply missing or

too low
Remedy
Correct the process wiring

Check the sensor or actuator

Check the process wiring

Check the ambient temperature

Correct the process wiring

Replace the sensor or actuator

Use a sensor with lower

impedance
Use an actuator with lower load

impedance
Correct the I/O device-to-

sensor tuning
Modify measuring range by

means of parameter
assignment
Correct the I/O device-to-

sensor tuning
Modify measuring range by

means of parameter
assignment
Replacement of I/O device
Correct the parameter assignment
Check the supply voltages

Check the load voltage supply

Correct the process wiring

Operating Instructions, 06/2009, A5E01250250-04
ET 200eco PN