Description of Functions
9-8
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Table 9-2 Checkback signals, continued
Symbol
FunctionSignificance
English
FunctionSignificance
Ger-
man
GO_P
GO_M
FR+
FR−
Travel plus
Go_minus
... means the axis is traveling in the direction of increasing actual
values or in the direction of frequency output “+” in Control mode
... means the axis is traveling in the direction of decreasing ac-
tual values or in the direction of frequency output “−” in Control
mode.
S As soon as an active traversing movement is pending, the
messages (FR+) or (FR−) are output depending on the tra-
versing direction. They can only be pending as alternatives.
S “Travel Plus” or “Travel Minus” is actuated at the start of the
acceleration phase and remains active until the axis comes
to a standstill or the POS_ROD target area has been
reached.
ST_SERVO SRFG Servo enable
status
S Feedback of servo enable status after single function has
been activated
S See also Section 9.3.2 ”Servo enable”
S See also Section 11.1, error reaction ”Everything OFF”
FVAL_
DONE
FIWS Set actual
value on-the-
fly complete
... set Actual value on-the-fly is executed.
The signal is reset when “Set actual value on-the-fly” is activated
(see Section 9.3.6).
NUM_MF MNR M function
number
M command 0 − 99
STR_MF AMF Change M
function
... is indicated simultaneously with the M function number.
S If M functions are programmed in a traversing block, their
output is signaled by setting “Change M function.”
S “Change M function” remains pending until:
− the specified time has expired, for time-controlled M func-
tions
− the user has acknowledged, for acknowledgment-con-
trolled M functions.
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