Kipp&Zonen COMBILOG Data Logger - Manual (Page 96)

Bus parties such as controls (PLCs), computers (PCs), repeat-
ers and interface converters, a.s.o., mostly offer the possibility
of applying the shield directly to the appliance or to separate
shield rails. The shield rails offer the advantage of preventing
possible interfering signals from being led to the appliance via
the shield. These are already branched off before via the pro-
tector ground.
The COMBILOG housing has no direct shield terminals. The
shield of the bus cable can be earthed e.g. by so-called shield
clamps.
Note: The shield must not be connected to bus interfaces
A or B!
Note: The shield should always be connected to earth in a
large surface, low-inductive manner.
10.8 PC Bus Connection
The bus interface of the data logger is based on the RS485
standard. Since most of the hosts are "only" equipped with
RS232 interfaces, an interface converter or a plug-in board with
RS485 drivers is required for conversion purposes.
Theodor Friedrichs offers a compact interface converter.
Furthermore a repeater module is available from
Theodor Friedrichs. This module can be used as a repeater or
as a converter. It also enables to connect the necessary bus
termination with a switch. The repeater/converter has a snap-
on mounting for installation on standard profile rails (DIN rail)
35 mm (1.4 inch) according to DIN EN 50022.
Hardware Manual COMBILOG 1022 96