Samson TROVIS 5579 - 9.1 RS-232 system bus interface

Note: Regardless of whether communication is established using a modem or data cable, the
operating software can be updated using the serial system bus interface, provided Modbus
has been activated (CO6 -> F01 - 1).
9.1 RS-232 system bus interface
When looking onto the controller front, the system bus connection is located on the left side
inside the controller housing (RJ-45 jack).
In this case, the controller can be connected either directly to the serial interface of a PC
(point-to-point connection) or to a (dial-up) modem. A dial-up modem is required if the con-
troller is to be connected to the telecommunications network. In this case, the controller works
autonomously and can issue an alarm call to the building control station when errors occur.
Additionally, the building control station can dial up to the controller, read data from it, and
send new data once the valid key number has been written to holding register no. 40145.
Note: If a wrong key number has been written to holding register no. 40145 for the third
consecutive time, the controller immediately interrupts the modem connection and generates
an “Err 7“ error message (Unauthorized access occurred). As a result, the call to the config-
ured control system is triggered and a text message is sent. Bit D6 is deleted as soon as the
error status register has been read by the control system and the connection has been termi-
nated.
In special cases, the Lock dial-up function can be selected to stop dial-up in case an error
occurs. Using the Dial-up also upon corrected error function, the controller additionally
informs the building control station when a previously signaled error no longer persists.
Thanks to the Automatic modem configuration function, the dial-up modem connected to the
controller does not need to be preset; it is configured automatically by the controller.
Functions
WE Configuration
Modbus 1 CO6 -> F01 - 1
Modbus 16-bit addressing 0 CO6 -> F02
Modem function 0 CO6 -> F03 - 1
Automatic modem configuration 0 CO6 -> F04 - 1
Lock dial-up 0 CO6 -> F05
Dial-up also upon corrected error 0 CO6 -> F06
Control system monitoring 0 CO6 -> F07 - 0
EB 5579 EN 119
Communication