Baldor NextMove ST, Installation Manual

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4-18 Input / Output MN1929
4.6.3 Using RS232
The NextMove ST has a full-duplex RS232 serial port with the following preset configuration:
H
57.6 Kbaud
H
1 start bit
H
8 data bits
H
1 stop bit
H
No parity
H
Hardware handshaking lines (RS232) RTS and CTS must be connected.
NextMove ST
(DCE)
9-- pin
Computer
COM Port
(DCE / DTE)
Serial
RXD 2
TXD 3
GND 5
2 RXD
3 TXD
5 GND
RTS 7
CTS 8
7 RTS
8 CTS
COM
Connect overall
shield to connector
backshell.
Figure 19 - RS232 serial port connections
The RS232 port is configured as a DCE (Data Communications Equipment) unit so it is
possible to operate the controller with any DCE or DTE (Data Terminal Equipment). Full duplex
transmission with hardware handshaking is supported. Only the TXD, RXD and 0V GND
connections are required for communication. Pins 4 and 6 are linked on the NextMove ST.
The maximum recommended cable length is 3m (10ft) at 57.6 Kbaud. When using lower baud
rates, longer cable lengths may be used up to maximum of 15m (49ft) at 9600 baud. A suitable
cable is available from Baldor, catalog number CBL001-501.