Festo CAMC-G-S3 Manual page 132

2 Product description of safety module CAMC-G-S3
Terminate
request
Safety condition
violated
Status vari­
able outside /
inside the per­
mitted range
At these transitions, an error is triggered, leading to the parameterised error
response
Fig. 2.37 Statuses of the "Operation" safety functions
The safety functions, for their part, have small-scale sequence controls and generate
status and error messages (example: Safety function SS1 è Section 2.5.3, Fig. 2.18).
Various common status messages are generated from the error or operating statuses of
the individual safety and logic functions.
The common messages are formally implemented as virtual outputs. They are fed back as correspond­
ing logical inputs.
This means that outputs (e.g. signal relay) can be activated according to the system status, and safety
functions can be activated according to the system status.
The common status messages are described below.
VOUT_READY: "Ready for operation, no safety function requested"
The "Ready for operation, no safety function requested" signal becomes "1" when no error message is
pending whose reaction exceeds a warning and no safety function has been requested.
VOUT_SERVICE: "Service", the safety module must be parameterised
The "Service" signal becomes "1" when the parameter set of the module is invalid, when a parameterisation
session is running or if no parameter set is available. There is an identifier in the parameter set, using which
the safety module can detect whether this is a delivery status (= standard parameter set).
132
Not requested
Terminate
request
Status vari­
able outside /
inside the per­
mitted range
Safe state
reached
Request safety
function
Terminate
request
Safety function
requested
Safe state reached, depending on
the appropriate safety function
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English