Siemens SIMATIC FM 353 Manual page 37

Signal names
PULSE, PULSE_NC
DIR, DIR_N
ENABLE, ENABLE_N
PWM/BOOST, PWM_N/BOOST_N
READY1_N
GND
Signal type
O
I
Note
The active level of each signal can be defined in MD37 (see Section 5.3.1, 9.7).
Check the technical documentation for your drive device regarding assignment of
signal levels to direction of rotation.
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Output
Input
Lock signal, true and negated
Direction signal, true and negated
Enable signal, true and negated
Current control, true and negated
Ready message
Signal ground
Wiring
4-5