43
= Key1
= Key 2
= Key 3
= Max. value or consumption = Min. value or supply
Serial interfaces
In the UMG505, there is always a RS485 or RS232
interface included.
RS485 interface (Option)
The RS485 interface is suited for transmission of
data over a distance of 1200 m. Up to 31 UMG505
and a master (PC or SPS) can be connected.
CONF
Type of interface
T r a n s m i s s i o n
protocol
Baud rate
Modem
Via the RS232 interface, the UMG505 can be con-
nected to an external analogue modem. The
connection between UMG505 and the Modem is
carried out via a "RS232" cable.
For modem operation, the transmission protocol 2
(modem) must be selected for the RS232 interface.
RS232 interface (Option)
The RS232 interface is suited for transmission of
data over a distance of 30m. The UMG 505 can be
connected directly via this interface to the COM-port
of PC or an external analogue modem.
The connection to PC must be carried out via a
RS232 cable
.
CONF
Interface type
Protocol number
Baud rate
Baud rate
The baudrates:
9600, 19.2k and 38.4k
can be set.
Transmission protocol RS485
The following protocols can be selected:
oFF no protocol, interface is off.
01
Modbus RTU (Slave).
02
Modem.
Terminal resistors
If the device is connected to the end of a bus cable,
the bus cable must be terminated by terminal
resistors. The required terminal resistors are
integrated within the device and are activated in
condition ON.
Diagr: Connection diagram RS485
UMG505
RS485
30
29
28
A
B
GND
B
A
RS485
Driver
+5V=
GND
390R
390R
220R
Abschlusswiderstände
Line Terminator
On
Off
Mit Abschlusswiderstand
With Line Terminator
Ohne Abschlusswiederstand
Without Line Terminator
Baud rate
The following baud rates can be set:
9600, 19.2k and 38.4k.
Transmission protocols RS232
oFF no protocol, interface is off
01
Modbus RTU (Slave).
02
Modem.
Interface converter
If a UMG 505, which is equipped with a RS485
interface, should be connected to a PC, which has
got an RS232 interface, an interface converter is
required.
k
Diagr. Connection diagram RS232 cable
Potential free
Diagr. Connection diagram RS232
UMG505
RS232
30
29
28
TXD
RXD
GND
RS232
Driver