Beijer Electronics QTERM®-A12 - Manual (Page 16)

Serial Communications Hardware Description and Architecture
10 QTERM-A12 Terminal
4.4 Serial Communications
The QTERM-A12 has two serial ports, designated COM1 and COM2, that can communicate
up to 3.6 MBaud. Refer to
section 7.2, “Connector Pinouts” for serial port pinout data.
The COM1 serial port can be configured in software to your choice of EIA-232 with hardware
flow control (supporting RX, TX, RTS and CTS), EIA-422 or EIA-485. COM2 is an EIA-232
port with hardware flow control. The serial ports are accessed through female DB9 connectors
on the back of the unit.
The QTERM-A12 also has two powered (500 mA per port) full-speed USB host ports that are
USB 2.0 compliant. The ports are accessed through USB type A connectors on the back of the
unit. The connectors are right-angle facing the bottom of the unit to facilitate mounting in shal-
low panels.
4.5 Network
The QTERM-A12 has an internal 10/100Base-T wired Ethernet adapter for network commu-
nications. The network interface is accessed through a standard RJ45 socket located on the
back of the unit.
4.6 Speaker
The QTERM-A12 includes an internally mounted speaker, providing the ability to play a vari-
ety of audio, including audible feedback, warnings, messages and media clips. The
QTERM-A12 is also designed with software programmable volume control.
N OTE
☞
The QTERM-A12 speaker is intentionally over-driven at full volume, and certain media files
may sound distorted during playback. Some find that this gives better results after the unit has
been mounted into a panel. Volume should be adjusted to give optimal results for the media
files used in your application.
C AUTION
For Class I, Division 2 installations:
Do not connect or disconnect cables while power is applied unless the area is known to be
non-hazardous.
C AUTION
For Class I, Division 2 installations:
Do not connect or disconnect cables while power is applied unless the area is known to be
non-hazardous.