K-Patents PR-21-S - Manual (Page 109)

11 Ethernet connection specification 103
11 Ethernet connection specification
The Ethernet connection enables data download from a DTR to a computer. The
connection works both directly between DTR and computer or via a hub or switch,
local area network (LAN), wireless network (WLAN) or fiber Ethernet.
Any type of computer (PC, Mac, PDA, mainframe...) with a compatible network
connection can be configured to download data from the DTR. This document gives
all the specifications necessary to write a communications program for download-
ing purposes. It is also possible to get a ready-to-install communications software
from K-Patents.
11.1 Cable requirements and connection
11.1.1 Ethernet cable specification
The DTR uses a standard Ethernet cable (10/100BASE-T Cat 5e cable with RJ45
connectors). The maximum cable length is 100 m.
Ethernet connection is similar to that of a computer/PC:
Use cross-over Ethernet cable to connect the DTR directly to a computer (Fig-
ure 11.1). If you are connecting the DTR to a LAN (Local Area Network) via a wall
socket, use straight-through Ethernet cable (Figure 11.2).
Cross-over
cable
PROCESS INSTRUMENTS
POWER
Figure 11.1 Connecting DTR to a computer.
PROCESS INSTRUMENTS PROCESS INSTRUMENTS
POWER POWER
Straight-through
cable
LAN
Figure 11.2 Connecting DTR to LAN.
If you are connecting the DTR to a hub or switch or WLAN access point, please
consult the user’s guide of your hub/switch/access point for the correct cable type
(Figures 11.3 and 11.4).