Interface Allocation - Siemens SINAUT ST7 System Manual

● Power loss:
The power loss of the S7-300 configuration amounts to a total of 42.9 W.
The power loss of all the components used in a cabinet must not exceed the maximum
available power of the cabinet.
Note
When planning the dimensions of the cabinet, make sure that the temperature in the
cabinet does not exceed the permitted maximum of 60°C even when the temperature
outside the cabinet is high.
5.4

Interface allocation

Serial interfaces (RS-232/RS-485)
The serial interfaces are designed as 9-pin D-sub miniature connectors (male).
As an RS-232 interface, the pin assignment corresponds to that of a standardized PC
connector.
With the TIM 4R-IE, the interface standard in the configuration can be switched from RS-232
to RS-485 and is therefore part of the configuration data. As a default, the ports are set to
RS-232.
Table 5- 3
SINAUT ST7 - Volume 1
System Manual, 11/2018, C79000-G8976-C178-12
Pin assignment of the plug of the serial interface
Illustration Pin no.
1
2
3
4
5
6
7
8
9
Signal name Signal direction
DCD Input
RXD Input
TXD Output
DTR Output
GND
-
RTS Output
CTS Input
-
Technical specifications
5.4 Interface allocation
With TIM 4R-IE
Switchover to RS-485 by
configuration
Switchover to RS-485 by
configuration
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