Siemens SIMATIC FM 453, Manual

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9-6
FM 453 Servo Drive / Step Drive Positioning Module
C79000-G7076-C453-01
9.1.2 Checkback Signals
The checkback signals indicate the processing status of the axis and report it
to the user program.
Table 9-2 describes the checkback signals and their functions.
Table 9-2 Checkback Signals
Symbol
Significance Function
English German
Significance Function
TST_STAT TFGS Sw./over P bus
interface com-
plete Communication with the user program is not possible, since the P bus
interface has been switched over for operation with the start-up tool.
OT_ERR BF/FS Operator con-
trol and guid-
ance errors ... signaled to the user if an operator-control error or travel error is
pending (e.g. unallowed control signal has been set, (R+) and (R–) set
simultaneously) An error message causes the movement to be canceled.
see Chapter 11
DATA_ERR DF Data error ... is reported to the user when a data error occurs.
see Chapter 11
PARA PARA Parameterize ... module parameterized. All machine data applicable for control of an
axis are present on the module.
START_EN SFG Start enable ... signals that the FM 453 is ready for positioning and output.
S
“Start enable” is set:
– if no static stop or error is pending and the drive enable is pend-
ing
– if the mode setting and mode checkback match (after mode
change)
– if no axis functions (including M output, dwell time) are active,
or after functions have been completed
– for further processing of a function interrupted with unpro-
grammed stop
– in Automatic mode, after program has been selected (one pro-
gram active) and after M0, M2, M30, or at end of block
with Automatic single-block
S
“Start enable” is deleted:
– if a function has been started and is active, or
– if a start condition is active (stat.)
– if there is an error and an unprogrammed stop
– in follow-up mode
S
Without Enable Start, none of the functions that can be operated
with Travel Plus, Travel Minus and Start can be executed.
Overview
Description of Functions