Pilz PSSu E S 2AO U - Manual (Page 29)

Operation
Operating Manual PSSu E S 2AO U(­T)
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7 Operation
7.1 Messages
A module error is displayed via the "Err" LED (see section entitled "Display elements"), sig­
nalled to the head module and then entered in the head module's
} Error stack, with PSSu in system environment A
} Diagnostic log, with PSSu in system environment B.
The module can detect the following errors:
Module error Explanation Remedy
Start­up error Error as the PSSu system starts
up Change faulty module.
Configuration error Incorrect module type configured. The configured hardware registry
does not match the actual hard­
ware registry.
ST communication error Error during ST communication Change faulty module.
Bus termination error There is no terminating plate or
there is a bad contact with the
module bus. Install a terminating plate with in­
tegrated end bracket or insert the
base modules together correctly.
Timeout error on the output No data has been received for the
output from the module bus for
longer than 50 ms. Check ST communication or con­
figuration.
7.2 Display elements
Legend:
LED on
LED off
7.2.1 Display elements for module diagnostics
The module has an LED for displaying module errors ("Err" LED).
Err
11
I0
21
I1
Err
LED Meaning
Name Colour Status
Err ­ ­ ­ No error
Red Module error