Siemens ET 7Y Series Spezifikationen Seite 61

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ET 200S in the PROFIBUS Network
4-3
ET 200S IM 151-7 CPU Interface Module
A5E00058783-04
Access to the ET 200S
The IM 151-7 CPU is a passive/active bus node. The programs and configuration
of the IM 151-7 CPU can be transferred to the IM 151-7 CPU by choosing ”Load
PLC” from the PD in SIMATIC Manager. All the other diagnostic and test functions
are also possible with the PD.
If the PD is currently the only active bus node, this must be set beforehand in
SIMATIC Manager by choosing the Set PD/PC Interface menu command (see
Section 4.4).
However, you can still install OPs/OSs (operator panels/operator stations) as fixed
components of the PROFIBUS network for operating and monitoring functions.
You cannot access an ET 200S from more than 12 devices in parallel:
1 connection is reserved for the PD.
1 connection is reserved for an OP or an OS.
10 connections are available as desired for PDs, OPs/OSs and CPUs
We recommend that you allocate a PROFIBUS address to the PD/OP in the same
way as for other network nodes (see Figure 4-1).
Active/passive DP interface of the IM 151-7 CPU
You set the mode of the DP interface at the IM 151-7 CPU during configuration in
the Properties MPI/DP window:
Passive Active
Figure 4-2 Setting the mode of the DP interface at the IM 151-7 CPU
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