Firmware: V2.18 / V--
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10.4.3 Assignment RS485
RS485 on the base module
Description
Terminal No.
Connection
Wire colour
Function
RS485
13*
14*
RS485 A(-)
RS485 B(+)
brown
white
For coupling third party controllers to the Modbus,
see chapter Assignment Modbus Modules
15
16
GND
SHIELD
green
shield
Connection for RS485
Shield
Setting of the interfaces TTY/RS485 using jumper J1
DANGER
Warning about dangerous electrical voltage! Danger to life - Danger of electric shock! BEFORE
connecting and disconnecting, it must be ensured that
no voltage
is present at all connections of the
controller.
ATTENTION
All Modbus supply lines must be shielded (cable type
J-Y(ST)Y 2x2x0.8 mm
2
), the maximum length of
the cable is 1000 m! As a general rule, care should be taken to ensure that signal cables and cables
carrying mains voltage are routed in separate cable channels
For further details about the CAN bus, see operating manual "
E*LDS Basics, Safety Instructions, CAN
* Special feature:
A terminating resistor of
120 Ohm is already permanently installed
(integrated) in the controller
between the terminals
13
A(-)
and
14 B(+)
. Thus this interface represents the beginning of the
Modbus, a termination at these terminals is
not
required and must
not
be done! A terminating resistor
of 100 Ohm
must
only be installed
at the end of the line (at the last Modbus module)
.
Note
: From serial number "
14xxxxx
" onwards, a 120 Ohm terminating resistor is permanently
integrated in the controller between terminals 13/14.
The interface must be configured via jumper J1 before use.