Installation guide
3.4 Installing the TIM 3V-IE variants in an S7-300
Station control system
108
System Manual, 07/2009, C79000-G8976-C178-07
Connection to ST7cc / ST7sc over MPI
The following figure shows a configuration in which the TIM is connected to the PC over the
MPI interface of its CPU. This is possible only when one of the CPU modules listed in the
section "Installation of the TIM 4 as CP in an S7-300 (Page 121)" is used in the S7-300 rack.
Only then can the TIM be addressed as a node under its own MPI address on the MPI bus.
This allows the PC and TIM to exchange data directly. No SINAUT software is necessary on
the CPU.
With this configuration, the TIM 3V-IE Advanced provides the control center with two
connections to a WAN:
●
over the RS-232 port to a classic WAN
●
Over the RJ-45 interface to an IP-based WAN
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Figure 3-6
SINAUT ST7cc / ST7sc control center with a TIM 3V-IE Advanced connected over MPI,
1 classic connection to WAN and 1 IP-based connection to WAN
With this configuration. further TIM 3V-IE Advanced modules could be inserted in the S7-300
rack and all connected to the PC over the MPI port of the CPU. Each TIM provides the PC
with two further connections to the WAN. In this case, the maximum number of TIM modules
is not restricted by the connection resources of the CPU because they are not required. The
maximum number of TIM modules is restricted by the number of connection resources of the
CP in the control center PC.
