73
1
O PER AT I O N , M A I N T EN A N C E , A N D I N S TA L L AT I O N G U I D E
—
Fig. 5.11 Signals of Ekip Com Modbus RTU -module
5.5.1.1 LED indications
The following table illustrates the possi-
ble signals, and their meaning:
LED
Indication
Description
Power LED,
green
Off
Power supply absent.
On fixed
Power supply and
communication with
the device present.
On, with two
quick
flashes per
second
Power supply present,
and communication
with device absent.
RX and TX
LEDs,
green
Off
Modbus RTU
communication not
active.
On, flashing
rapidly
Modbus RTU
communication active.
—
Table 5.6 Indication / Ekip Com Modbus RTU -module
Rterm Rpol
120
Ω
on
on
off
off
ON IA
1 2 3 4
—
Fig. 5.12 Termination resistor; To enable the Rterm, the
dip-switches 1 and 2 must be positioned to ON. This option
must be selected before the installation of the module
5.5.1.2 Termination resistor
On the Ekip Com Modbus RTU module it is
possible to activate the terminating resis-
tance Rterm = 120 Ω. To enable the Rterm,
the corresponding dip-switches 1 and 2
(on the side of the module) must be posi-
tioned to ON. This option must be se-
lected before the installation of the
module.
With the Ekip Com Modbus RTU
modules, the dip-switches 3 and 4 of the
Rpol (polarization resistance), are not
used.
Summary of Contents for Zenith ZTS T Series
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Page 129: ...129 1 OPER ATION MAINTENANCE AND INSTALL ATION GUIDE ...