2 con trol ler with serial rs-485 inter face 68, Rs-485 68, Controller with serial rs-485 interface – Samson 5476 User Manual

Page 68: 2 controller with serial rs-485 interface

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Functions

WE

Configuration

Modem operation

OFF
8 bit
30 min
5 min
5 min
PULS

FB44 = ON
8 bit/16 bit
Cyclical initialization In* / 0 to 255 min
Dialing pause to GLT PA* / 0 to 255 min
Modem timeout t

0

* / 0 to 99 min

Dial procedure / PULS/ton
Phone no. of control station GLT*

Alternative recipient

OFF
5

FB46
Number of dialing attempts An* / 0 to 99
Phone number of alternative recipient*

Lock dial-up

OFF

FB35

Dial-up also upon corrected error

OFF

FB45

Parameters

*

WE

Range of values

Station address (ST-NO)

255

1 to 247 ( 8 bit)
1 to 999 (16 bit)

Baud rate (BAUD)

9600

150 to 9600

* –> Section 9.3 (”Description of communication parameters to be adjusted“)

9.2

Controller with serial RS-485 interface

A constant bus connection is required (data cable) for the operation of the controller with serial
RS-485 interface. The bus line links the control units/devices in an open ring. At the end of the
bus line, the data cable is connected to the control station using an RS-485/RS-232 converter
(e.g. TROVIS 5484).
The maximum range of the bus connection (cable length) is 1,200 meters. A maximum of
32 devices can be connected to such a segment.

68

EB 5476 EN

Communication

Fig. 7 · Pin assignment of RS-232 port (left) and RS-485 port (right)

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