Samson TROVIS 5571, Mounting And Operating Instructions

Page: 21 / 44

Parameters *
WE Settings level / Range of values
Gateway Off RS-485/Master / On, Off
Addressing 8 bit RS-485/Master / 8-bit, 16-bit
Baud rate 9600 RS-485/Master / 9600, 19200
Frame Off RS-485/Master / On, Off
Bias voltage Off RS-485/Master / On, Off
Validity 600 s RS-485/Master / 0 to 600 s
Pause 0 ms RS-485/Master / 0 to 100 ms
Timeout 100 ms RS-485/Master / 100 to 10000 ms
Expansion module Broadcast RS-485/Master > Station address / 0 to 255, broadcast
* –> Section 5.3 (Description of communication parameters to be adjusted)
5.3 Description of communication parameters to be adjusted
Station address
This address is used to identify the PLC in bus or modem operation. In a system, each controller
needs to be assigned a unique address.
Addressing/16-bit addressing
Selection between 16-bit addressing or 8-bit addressing
Select RS-232/Slave menu item (under Station address):
4
16-bit addressing? Yes – 16-bit addressing
4
16-bit addressing? No – 8-bit addressing
Baud rate
The baud rate setting refers to the transfer speed between the Modbus instruments.
Control system monitoring
Any intervention made by the control system on dynamic processes are restricted in time, pro-
vided that communication between the control system and the controller is not established. The
controller resets the time monitoring after every valid retrieval of the station address. After the
defined maximum time has elapsed, all even bits are reset to “autonomous“.
EB 5571 EN
21
Communication