Siemens SIMATIC FM 353 Manual page 207

Table 9-2 Checkback signals, continued
Symbol
Significance
English Ger- Significance
man
WORKING BL Processing
in progress
WAIT_EI WFG Wait for ex-
ternal enable
DT_RUN T-L Dwell time
in progress
PR_BACK PBR Program
processing
in reverse
MODE_OUT BAR Active mode
SYNC SYN Synchronism
MSR_DONE ME End mea-
surement
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
... indicates that a function has been started with Start or Travel
Plus/Minus, and is active.
S
"Processing in progress" is set with:
− "Jogging", "Control" mode during the movement up to
standstill after cancelation of R+, R−
− Reference-point approach mode, during approach until
reference point is reached
− MDI, Incremental relative mode, during the positioning
process or while functions of the MDI block are being
processed
− Automatic mode, during processing of a traversing pro-
gram until the end of the program.
S
"Processing in progress" is deleted:
− by errors and restarts
− by mode changes.
− after axis standstill
... takes effect only if a digital input has been parameterized by
means of MD34 (see Section 9.8.1).
Set: if the enable input has not yet been set or has been reset
when a movement has been activated.
... only active in Automatic and MDI mode.
As soon as a traversing block with a dwell time has been pro-
cessed, (T-L) is output during the programmed time period.
... is set after a Start in Automatic mode if a program is being
processed in reverse.
The selected mode is not fed back until it is internally active. For
a mode change, for example, a movement must be stopped be-
fore another mode can become active (does not apply to switch-
ing between Automatic and Automatic single-block modes).
... module is synchronized (see Section 9.6.1)
Required for axis motion in modes:
S
Incremental Relative
S
MDI
S
Automatic
... signals an executed measurement (see Section 9.3.10)
Description of Functions
Function
Function
9-7