Festo CPX-CTEL-4-M12-5POL, Description

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5 Diagnostics and error handling
Festo – P.BE-CPX-CTEL-EN – 1601b – English 45
5.4 Diagnostics via the CPX bus node
Malfunctions of the connected I-Port devices are reported to the CPX bus node as CPX error messages.
The following sections describe the special features of the representation for the CPX-specific dia­
gnostics options.
– Status bits (
è
5.4.1 Status bits of the CPX terminal)
– I/O diagnostics interface (
è
5.4.2 I/O diagnostic interface and diagnostic memory)
– Diagnostic memory (
è
5.4.2 I/O diagnostic interface and diagnostic memory)
5.4.1 Status bits of the CPX terminal
Tab. 5.4 shows the effect of the CTEL master module on the status bits of the CPX terminal.
Bit Diagnostic information
with logic 1
Description Cause of error, CTEL master module
0 Error at the valve Module type in
which the error
has occurred
–
1 Error at output –
2 Error at input –
3 Error at analogue module/
technology module
(function module)
Bit 3 is set for all errors of the CTEL master
module.
4 Undervoltage Error type Error number 5
1)
5 Short circuit/overload Error number 56
1)
6 Wire break –
7 Other error Error number 57, 58
1)
1)
è
Tab. 5.3
Tab. 5.4 Overview of status bits
Further notes on the function and content of the status bits are found in the CPX system
description (
è
P.BE-CPX-SYS-…).
5.4.2 I/O diagnostic interface and diagnostic memory
The CTEL master module reports specific diagnostic information to the CPX bus node. Via the I/O dia­
gnostic interface and the diagnostic memory of the CPX terminal, it is possible to apply the diagnostics
to individual I-Port devices. The I-Port devices connected to a CTEL master module are treated as input
or output channels within the CPX terminal.
Detailed information about the I/O diagnostic interface and diagnostic memory can be
found in the CPX system description (
è
P.BE-CPX-SYS-…).