Glossary
Glossary-4
ET 200S Interface Module IM 151/CPU
A5E00058783-01
Distributed I/O Systems
These are input/output units that are not located in the base unit; instead, they
are distributed at some distance from the CPU. The following are examples of
such units:
ET 200S, ET 200M, ET 200B, ET 200C, ET 200U, ET 200X, ET 200L
DP/AS-I Link
S5-95U with a PROFIBUS-DP slave interface
Other DP slaves from either Siemens or other vendors
The distributed I/O systems are connected to the DP master via PROFIBUS-DP.
DP master
A
Master that complies with EN 50170, Volume 2, PROFIBUS, is referred to
as a DP master.
DP Slave
A
slave on the PROFIBUS bus system with the PROFIBUS-DP protocol that
complies with EN 50170, Volume 2, PROFIBUS standard is referred to as a DP
slave.
DP Standard
The DP standard is the bus protocol of the ET 200 distributed I/O system based
on EN 50170, Volume 2, PROFIBUS.
Error Display
The error display is one of the possible responses of the operating system to a
runtime error. The other possible responses are:
error response in the user
program, STOP mode of the CPU.
Error Handling via OB
If the operating system detects a specific error (e.g. an access error in the case
of
STEP 7), it calls the organization block (error OB) provided for this event that
specifies the subsequent behavior of the CPU.
Summary of Contents for SIMATIC IM 151/CPU
Page 6: ...Important Information vi ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Page 14: ...Contents xiv ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Page 42: ...ET 200S in the PROFIBUS Network 3 12 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Page 68: ...Commissioning and Diagnostics 4 26 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Page 98: ...Technical Specifications 6 8 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Page 108: ...Cycle and Response Times 7 10 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Page 190: ...Execution Times of the SFCs and SFBs C 4 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...
Page 196: ...Migration of the IM 151 CPU D 6 ET 200S Interface Module IM 151 CPU A5E00058783 01 ...