Installation guide
3.8 Standalone TIM 4 with an S7-400 or PC
Station control system
124
System Manual, 07/2009, C79000-G8976-C178-07
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Figure 3-17 SIMATIC S7-300 with TIM 4,
Two connections to WAN via external MDx modems
The achieve greater clarity, the TIM 4 and MDx (1) modem are installed directly beside each
other in rack 0.
The TIM is connected to the module on the left using a bus module connector.
There is no bus module connector between the TIM and MDx (1) modem. The MDx (1)
modem is connected to the RS-232/RS-485 interface X1 of the TIM 4R via a suitable
6NH7 701-xxx connecting cable.
In this example, the MDx (2) modem is installed on a DIN rail and is connected to the RS-
232/RS-485 interface X3 of the TIM via the interface adapter cable 6NH7 700-0AS05 and a
suitable 6NH7 701-xxx connecting cable. The interface adapter cable 6NH7 700-0AS05
ships with the TIM 4R / TIM 4RD.
Instead of the MDx SINAUT modem, other modems with an RS-232 or RS-485 interface can
also be used, for example wireless devices or the SINAUT GSM modem MD720-3.
S7-300 with maximum configuration
The maximum number of TIMs that can installed in an S7-300 depends on the connection
resources provided by the CPU. Two connection resources per TIM are required on the
CPU.
Apart from the connection resources, the available work memory on the CPU must also be
taken into consideration. The more TIMs installed and the more stations connected and the
more objects processed per station, the greater the memory requirements of the telecontrol-
specific user program on the CPU. This program is put together with blocks from the
SINAUT TD7 software package (TD7onCPU).
3.8
Standalone TIM 4 with an S7-400 or PC
Introduction
In standalone mode, in other words, without an S7-300-CPU, the TIM 4R / TIM 4RD is
ideally suited as a SINAUT communications processor for a SIMATIC S7-400 or for the PC
of the ST7cc or ST7sc control center. They are then linked over the MPI port of the TIM 4.
