Drive Interface - Siemens SIMATIC FM 353 Manual

9.7.2

Drive interface

Overview
As a minimum, actuation of the stepper drive for controlling the movement se-
quence takes place by way of the signals "Pulse" and "Direction". By way of these
signals for specifying distance beyond the stepper drive, the FM 353 optionally pro-
cesses additional signals from different drive ports.
Standard signals "pulse", "direction"
Through the FM 353, pulse length is automatically set to Τ = 0.5@MD41.
Direction of rotation for the stepper drive is controlled with the direction signal.
The level of both signals can be parameterized.
MD
37 Special control signals
37.8 Pulse output inverted
37.9 Direction output inverted
Optional signals "servo enable", "servo ready"
These signals are used to activate the drive. The "Servo ready" signal can be con-
nected to the FM 353 either via the X2 connector at TTL level, or X1, with the 24 V
level (see Section 4).
The active level for both signals can be parameterized.
MD
37 Special control signals
37.0 Controller enable active
37.2 Controller ready active
37.3 Controller ready inverted
37.4 Controller ready input
selection
In all operating modes except Control mode, the "servo enable" signal is required
for the duration of every traversing movement, irrespective of the parameter defini-
tions. If the servo enable is not detected or is deactivated during the movement,
the "servo enable missing" message is triggered (see Table 11-5, Class 3/No. 61).
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Designation
Designation
0: Signal not used
1: Signal used
0: Signal not connected
1: Signal is connected
0: Controller ready high active
1: Controller ready low active
0: at Front panel connector X1 (RM)
1: at D Sub connector X2
(Ready1_N)
Description of Functions
Value/Meaning
0: Pulse high active
1: Pulse low active
0: low sign. = direction +
1: low sign. = direction −
Value/Meaning
Output signal
Output signal
Output signal
Input signal
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