200Isp Station On Profibus Dp - Siemens SIMATIC ET 200iSP Operating Instructions Manual

Fieldbus
Distributed I/O
1.4 ET 200iSP station on PROFIBUS DP
PROFIBUS DP
PROFIBUS DP is an open bus system according to the IEC 61784-1:2002 Ed1 CP 3/1 standard with
the "DP" transmission protocol. (DP stands for distributed I/O).
Physically, the PROFIBUS DP is either an electrical network based on a shielded two-wire line or
an optical network based on a fiber-optic cable.
The "DP" protocol allows fast, cyclic data exchange between the control CPU and the distributed
I/O devices.
PROFIBUS RS 485-IS
The PROFIBUS DP is intrinsically safe with respect to the PROFIBUS RS 485‑IS (intrinsically safe
protection type i). Intrinsic safety is ensured by the RS 485‑IS coupler - which acts like a safety
barrier. You can find more information on the PROFIBUS RS 485‑IS at the "PROFIBUS RS485‑IS
User and Installation Guideline (https://www.profibus.com)".
DP master and DP devices
The link between the control CPU and the distributed I/O devices is the DP master. The DP master
exchanges data via PROFIBUS DP with the distributed I/O devices and monitors the PROFIBUS DP.
The distributed I/O devices (= DP devices) prepare the data of the encoders and actuators on site
so that they can be transferred to the control CPU via PROFIBUS DP.
Devices that can be connected to PROFIBUS DP devices
A large variety of devices can be connected to the PROFIBUS DP as DP masters or DP devices,
provided they behave according to the IEC 61784-1:2002 Ed1 CP 3/1 standard. These include the
devices of the following product families:
• SIMATIC S7/M7/C7
• SIMATIC PG/PC
• SIMATIC HMI (operator control and monitoring devices OP, OS, TD)
ET 200iSP
Operating Instructions, 11/2022, A5E00247483-AK
PN/IO subnet on the same internal PN/IO interface of the IO controller (e.g. CPU 410‑5H: Terminal
X8)
①
• : 1 PROFINET IO subnet
②
• : 2 PROFINET IO subnets
③
• : 2 PROFINET IO subnets with MRP
IO devices based on ET 200iSP:
①
• : With one interface module on a redundant IO controller (S2 redundancy)
②
• : With two interface modules on a redundant IO controller (R1 redundancy)
③
• : With two interface modules on a redundant IO controller (R1 redundancy)
System planning
1.4 ET 200iSP station on PROFIBUS DP
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