Functions
WE
Configuration
Fault dialing
OFF
Fb45
Alternative phone number
OFF
5
–
Fb46 = ON
Number of dial attempts GLT
An
*/ 0 to 99
Alternative phone number*
Blocking modem dialing
OFF
Fb47
Parameters
*
WE
Range of values
Station address
255
0 to 247 (8 bit), 0 to 999 (16 bit)
Baud rate
BAUD
9600
150, 300, …, 4800, 9600
* -> Section 9.3 (Description of the communication parameters to be set)
9.2
RS-485 interface
The operation using a RS-485 serial interface requires a continuous bus connection (data
cable) with four-wire connection. The bus line connects all the control devices through an
open ring. The four-wire bus is connected to the control station at the end of bus line using a
RS-485/RS-232 converter (e.g. TROVIS 5484).
The maximum cable length is 1,200 m. In this segment, up to 32 devices may be connected.
If you wish to use more devices or bridge greater distances, make sure repeaters (e.g.
TROVIS 5482) are installed to replicate the signal. On the whole, max. 246 participants can
be connected in line.
Caution!
For the installation, observe the standards and regulations for lightning and overvoltage pro-
tection.
Function
WE
Configuration
Modem operation
OFF
Fb44 = OFF
8 bit/16 bit addressing
Parameters
*
WE
Range of values
Station address
255
0 to 247 (8 bit), 0 to 999 (16 bit)
Baud rate
BAUD
9600
150, 300, …, 4800, 9600
* -> Section 9.3 (Description of the communication parameters to be set)
EB 5477 EN
81
Communication
!