Description of Functions
9-3
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
9.1.1 Control signals
Overview
The axis is operated and controlled by means of control signals.
Table 9-1 describes the control signals and their functions.
Table 9-1 Control signals
Symbol
English German
Name Function
TEST_EN TFB Sw./over
P-bus
interface
Interrupts communication with the user program, and switches over
the P bus interface for operation with the start-up user interface.
OT_ERR_A BFQ/
FSQ
Ack-
nowl.
opera-
tor/
travel
error
... resets an error message. Before acknowledging the error, correct
its cause.
START ST Start ... starts movement in “Automatic”, “MDI” and “Reference-point ap-
proach” modes.
STOP STP Stop ... interrupts movement or processing of the program
... cancels reference point approach.
DIR_M R− Direc-
tion mi-
nus
... moves axis in negative direction.
S In Jogging and Control modes, moves axis in negative direction
(level-dependent).
S Starts movement in negative direction in Incremental relative and
Reference-point approach modes.
S Specifies direction of movement for rotary axes in MDI and Auto-
matic modes.
DIR_P R+ Direc-
tion plus
... moves axis in positive direction.
S In Jogging and Control modes, moves axis in positive direction
(level-dependent).
S Starts movement in positive direction in Incremental relative and
Reference-point approach modes.
S Specifies direction of movement for rotary axes in MDI and Auto-
matic modes.
ACK_MF QMF Ac-
knowl-
edge M
function
... only “acknowledge-driven” during M function output (seemachine
data list in Table 5-4, MD32).
... acknowledges receipt of M function. Program sequence can be
continued.
READ_EN EFG Read-in
enable
... prevents read-in (processing) of the next block
... has effect only in Automatic mode.
The read-in enable is required in order to read in the next traversing
block during program execution.
SKIP_BLK SA Skip
block
... skips identified blocks in the program
... has effect only in Automatic mode.
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