SNAP-LCSX AND LCSX-PLUS Installation Guide
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“Configuring the Serial Ports” on page 111: Configuring the Serial PortsChapter 1
Configuring the Serial Ports
This chapter shows how to configure the controller’s serial ports.
The SNAP-LCSX comes with two serial ports:
•
COM0
is selectable as RS-232, RS-485 half-duplex (2-wire), or RS-485 full duplex (4-wire). The default
mode is RS-232 for connection to a PC. In RS-232 mode, COM0 also supports RTS and DTR/DCD flow
control for use with modems.
•
COM1
is an Opto 22 remote I/O port (half-duplex RS-485 only).
The SNAP-LCSX-PLUS has two additional serial ports, both configurable either as RS-232
or as half- or full-duplex RS-485. The default mode is RS-232. In RS-232 mode, COM2 and
COM3 support RTS flow control only. Interrupt (IRQ) functionality is available in RS-485 2-wire mode only.
Since most systems use the default modes, it’s not normally necessary to configure serial ports. However, if
you need to change the serial port configuration, you must open the controller and set configuration jumpers
on the serial card inside.
For help with
See page
Identifying the Serial Card and Jumpers
Configuring COM Port 2 (SNAP-LCSX-PLUS Only)
