Siemens SIMATIC NET SINAUT MD720-3, Системное руководство

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Connecting the device and switching on the device
SINAUT MD720-3
20
C79000-G8976-C211
Connectors for current supply
The screw terminals on the top of the device are for connecting the current supply:
24 V DC voltage (nominal), I
typ.
165mA at 24V. (Please also refer to chapter 7
Technical Data .)
Both screw terminals on the left (24V) are internally connected, see figure 3-1.
Both screw terminals on the right (0V) are internally connected.
Switching on
The devices switch on as soon as the operating voltage is supplied.
Functions of the LEDs
The SINAUT MD720-3 has three LEDs, which are used to indicate the device
status. The function of the LEDs is different in terminal and OPC Mode. You will
find the explanation of the function
● in Terminal Mode in chapter 4.3 Functions of the LEDs in Terminal Mode and
● in OPC Mode in chapter 5.3 Functions of the LEDs in OPC Mode .
Serial interface X1
For data transmission:
Connect the application (e.g. machine, vending machine, sensor, computer) with
the interface
X1 of the SINAUT MD720-3. To connect, use a RS-232 cable.
If the application has a different interface, e.g. CAN, PPI cable or a different
industry bus, a commercially available interface converter can be connected
between it and the SINAUT MD720-3.
OR
For configuration and service:
Connect the service PC via its serial interface (COM port). To connect, use a RS-
232 cable.