Diagnostics Via Status Bits Or The I/O Diagnostic Interface; Structure Of The Status Bits - Festo MSE6-E2M Original Instructions Manual

8 Diagnostics and error handling
8.3

Diagnostics via status bits or the I/O diagnostic interface

Detailed information on diagnostics via status bits and the I/O diagnostic interface can be
found in the CPX system description (è Tab. 1).
The MSE6-E2M offers the following two modes for diagnostics:
Diagnostics mode
Status bits
(System state)
I/O diagnostics
interface
(System diagnostics)
Tab. 8.14 Network-independent diagnostic modes
8.3.1

Structure of the status bits

Irrespective of the bus node used, the MSE6-E2M provides 8 status bits for displaying common dia­
gnostic messages (global error messages).
Status bits are configured like inputs. The input addresses, which are to be assigned to
status bits, depend on the network protocol used.
The status bits supply coded diagnostic information in form of 0 or 1 signals. If all bits supply a logic 0,
no error is reported.
– Bits 0 ... 3 specify the module types in which faults have occurred.
– Bits 4 ... 7 specify the type of fault.
Bit Diagnostic information
with logic 1
0 Error does not occur on the MSE6-E2M in the current equipment level.
1 Error at output
2 Error at input
3 Error on MSE6-E2M
4 Undervoltage
5 Short circuit/overload
6 Wire break
7 other error
Tab. 8.15 Structure of the status bits
Festo – MSE6-E2M-SY-EN – 1703d – English
Description
The status bits serve to display common diagnostic messages (global error
message). Access to the status bits is made via 8 internal inputs
(è 8.3.1 Structure of the status bits).
The I/O diagnostic interface is a network-independent diagnostic interface. It
can be used to read out all the internal data and parameters via 16 internal
inputs and 16 outputs (è 8.3.2 I/O diagnostics interface).
All diagnostic information is then also available even if the network protocol
used does not offer extensive diagnostic functions.
Description
Module type, on which an error
has occurred
Error type
Cause of fault
–
–
Bit 3 is set for all errors of the
MSE6-E2M.
–
–
–
FN10, FN15, FN25, FN26, FN29
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