WAGO-I/O-SYSTEM 750
Glossary 161
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Manual
Version 1.0.0, valid from HW/SW Version 01/01
T
Test Mode
The test mode is intended for commissioning and configuring the F I/O module
with the iPar server and is initiated by the F I/O module upon receiving the
F parameter F_iPar_CRC = 0. This eliminates the check of F_iPar_CRC against
iPar_CRC. All analog inputs are passivated during test mode and the F I/O
module outputs the substitute values (failsafe values) instead of actual process
values to the safe PLC. According to the PROFIsafe specification, the test mode
is indicated visually by 2 Hz flashing of the parameterization LED (LED H) in
green on the F I/O module.
TCI (Tool Calling Interface)
TCI (Tool Calling Interface) is an interface specified by the PROFIBUS User
Organization (PNO), which defines how device-specific or manufacturer-specific
parameterization tools are called from a configuration environment. The features
of the interface are described in conformance classes. Generally, the
communication options of the specific software tools are determined with the
devices.
T
SR
(safety response time in error-free case)
Equation symbol for the safety response time in error-
free case (see also “Safety
Response Time”).
T
SRF
(safety response time in case of error)
Equation symbol for the safety response time in case of error (see also “Safety
Response Time”).
U
User Acknowledgement
Prompt for user acknowledgment (operator acknowledgment) that evokes
commissioning of a machine or system.. User acknowledgment is necessary for
the F I/O module, for example, after detecting errors by the F I/O module and
their resolution by maintenance personnel and is initiated from the control level.