3. Product description
Festo.P.BE-CMMS-ST-G2-HW-EN 1008NH
33
Analogue input
The CMMS-ST stepping motor controller has an analogue input for input levels ranging
from +10 VDC to -10 VDC. The input is a differential input (12 bit), ensuring a high degree
of protection against interference. The analogue signals are quantified and digitalised by
the analogue-digital converter at a resolution of 12 bits. These analogue signals serve to
specify setpoints (speed or torque) for the control.
MODE switching
The analogue input AIN0 is also available as a digital input for use of further functions
such as the jog function, record linking and synchronisation. MODE switching allows you
to switch between the following default settings:
Mode Function
Mode 0
Positioning
Mode 1
Jog function
Mode 2
Set linking
Mode 3
Synchronisation
Table
3.4 Mode switching
3.3.6
RS232 interface (diagnosis/parameterisation interface)
The RS232 interface is intended as a configuration interface.
Parameters
Signal level
In accordance with RS232 specification or RS-485 specification
Baud rate
9600 baud to 115 kBaud
ESD protection
ESD protected (16 kV) driver
Port
Null modem standard, [X5]
Port
over [X5] / DSUB 9 pin / pin
Table
3.5 Parameters of the RS232 interface
The RS-485 interface is on the same plug connector as the RS232 interface.
Communication must be activated separately by the user. RS232 messages can also be
received when RS-485 communication is activated, which means that the device can be
accessed for configuration at all times.
After reset, the serial interface always has the following basic settings.
Parameters Value
Baud rate
9600 baud
Data bits
8
Parity None
Stop bits
1
Table
3.6 Default parameters
