RXi2-UP IPC Hardware Reference Manual
Section 6
GFK-3047D
Oct 2021
Hardware Interface
41
Figure 48: Pin Assignment
For RS
–
422 and RS
–
485-4 wire modes, connect the corresponding RX+/- with the TX+/- of
the counterpart and vice versa. For RS
–
485-2 wire mode connect RX+ and TX+ with the + line
of the cable and the RX- and the TX- together with the
–
line of the cable.
The difference between the various RS
–
4xx modes is the Tx/Rx control. RS-422 has Tx and Rx
always active. RS-485 four-wire enables Tx only when there is something to transmit, Rx is
always active. RS-485 two-wire enables Tx and disables Rx when transmitting, disables Tx,
and enables Rx when not transmitting. The various modes can be selected within the device
driver of the used operating system.
6.1.12
SATA 2.5 inch Drive Tray Replacement
ATTENTION
The information described in this section applies to service technicians only.
Two additional 2.5-inch storage devices are available for use with the SATA riser board or
the RAID option. The 2.5-inch hard disk trays (located in the front of the unit) can be used
as SSD or rotating devices.
ATTENTION
Before physically ejecting the device, make sure you dismount or eject the drive from
the OS.
To Replace the 2.5-inch SATA Drive
Note: Due to the SATA hot-plug capability, there is no need to power down the unit for
replacement. Just make sure you dismount or eject the drive from the OS before physically
removing the device.
1.
Locate the position of the hard disk device you want to remove.
