Which HMI components can you connect with S7-200 CPU and what should you watch out for when doing so?
You can connect a SIMATIC S7-200 CPU with different types of HMI devices. Here you must take into account differences in communications protocols, baud rates and the number of connections possible. The HMI device always plays the active part in the communication. This entry covers the following two aspects:
- One HMI component can communicate simultaneously with multiple SIMATIC S7-200 CPUs
- One SIMATIC S7-200 CPU can communicate simultaneously with multiple HMI components
One HMI component with multiple SIMATIC S7-200 CPUs
Below is an overview of HMI components that can be connected with the SIMATIC S7-200. In the following table "Number of S7-200s" stands for the maximum number of S7-200 controllers that can be parameterized with the configuration tool. Unless otherwise marked in the table the maximum baud rate is
- 187.5 Kbit/s with PPI protocol
- 12.0 Mbit/s with MPI protocol
|HMI components||Configuration tool1)||Number of S7-200s with
|Number of S7-200s with
| S7-200 via CP243-1 |
|PP 7||Configuration tool not required||-||1 (max. 1.5 Mbit/s)||-|
|PP 17-I||Configuration tool not required||-||1 (max. 1.5 Mbit/s)||-|
|PP 17-II||Configuration tool not required||-||1 (max. 1.5 Mbit/s)||-|
|TD 17||As from ProTool / Lite V2.51||4||4||-|
|OP 3||As from ProTool / Lite V2.51||2||2 5)||-|
|OP 5||As from ProTool / Lite V1.01||4||2 5)||-|
|OP 7||As from ProTool / Lite V2.5||4||4||-|
|OP 15||As from ProTool / Lite V1.01||4||4 5)||-|
|OP 17||As from ProTool / Lite V2.5||4||4||-|
|OP 25||As from ProTool V1.31||4||4 (max. 1.5 Mbit/s)||-|
|OP 27||As from ProTool V3.1||4||4||-|
|OP 35||As from ProTool V1.31||6||6 (max. 1.5 Mbit/s)||-|
|OP 37||As from ProTool / Lite V2.5||8||8||-|
|TP 27||As from ProTool V3.1||4||4||-|
|TP 37||As from ProTool V3.1||8||8||-|
|TP 070||As from TP Designer version V1||-||1 (max. 19.2 Kbit/s)||-|
|OP 73 Micro||As from WinCC flexible 2004 Micro SP1+HSP1.1||1||1 (max. 187.5 Kbit/s) 2)||-|
|TP 170micro||As from WinCC flexible 2004 Micro||1||1 (max.187.5 Kbit/s)||-|
|TP 177micro||As from WinCC flexible 2004 Micro SP1+HSP1.1||1||1 (max. 187.5 Kbit/s) 2)||-|
|Mobile Panel 170||As from ProTool / Lite V6.0 SP 2, WinCC flexible 2004 Compact||1||4||-|
|Mobile Panel 177 DP||As from WinCC flexible 2005 Compact||1||4||-|
|Mobile Panel 177 PN||As from WinCC flexible 2005 Compact||-||-||4 4)|
|Mobile Panel 277||As from WinCC flexible 2005 SP1 Standard||1||8||8 4)|
|OP 73||As from WinCC flexible 2004 Compact SP1+HSP1.1||1||2 (max. 1.5 Mbit/s) 2)||-|
|OP 77A||As from WinCC flexible 2004 Compact SP1+HSP1.1||1||4 (max. 1.5 Mbit/s) 2)||-|
|OP 77B||As from WinCC flexible 2004 Compact||1||4||-|
|TP 170A||As from ProTool V6.0||1||1 (max. 1.5 Mbit/s)||-|
|TP 170A||As from WinCC flexible 2004 Compact||1||4 (max. 1.5 Mbit/s)||-|
|TP 177A||As from WinCC flexible 2004 Compact SP1+HSP1.1||1||4 (max. 1.5 Mbit/s) 2)||-|
|TP 170B||As from ProTool V6.0, WinCC flexible 2004 Compact||1||4||-|
|TP 177B 4" PN/DP COLOR||As from WinCC flexible 2008 Compact||1||4||4 4)|
|TP 177B DP||As from WinCC flexible 2005 Compact||1||4||-|
|TP 177B PN/DP||As from WinCC flexible 2005 Compact||1||4||4 4)|
|OP 170B||As from ProTool / Lite V5.2 SP 2, WinCC flexible 2004 Compact||1||4||-|
|OP 177B DP||As from WinCC flexible 2005 Compact||1||4||-|
|OP 177B PN/DP||As from WinCC flexible 2005 Compact||1||4||4 4)|
|TP 270, OP 270||As from ProTool V6.0 SP 3, WinCC flexible 2004 Standard||1||8||8 4)|
|TP 277, OP 277||As from WinCC flexible 2005 Standard SP1||1||8||8 4)|
|MP 177||As from WinCC flexible 2008 Standard||1||8||8 4)|
|MP 270||As from ProTool V6.0||1||8||8 4)|
|MP 270B||As from ProTool V6.0 SP 3, WinCC flexible 2004 Standard||1||8||8 4)|
|MP 277||As from WinCC flexible 2005 Standard SP1||1||8||8 4)|
|MP 370 Key||As from ProTool V6.0 SP 3, WinCC flexible 2004 Standard||1||8||8 4)|
|MP 370 Touch||As from ProTool V6.0 SP 2, WinCC flexible 2004 Standard||1||8||8 4)|
|MP 377||As WinCC flexible 2005 Standard SP1||1||8||8 4)|
|PC IL 70||ProTool/Pro CS, WinCC flexible Advanced||1||8 (max. 187.5 Kbit/s)||8 4)|
|PC IL 77, PC 477,
PC 577, PC 670,
PC 677, PC 870,
|ProTool/Pro CS, WinCC flexible Advanced||1||8||8 4)|
|PCs||ProTool/Pro CS, WinCC flexible Advanced||1||8||8 4)|
|FI 25||ProTool/Pro CS||1||8 (max. 1.5 Mbit/s)||-|
|FI 45||ProTool/Pro CS||1||8||-|
|OP 37 Pro||Configuration set||1||8||-|
|TD 100C, TD200, TD200C, TD400C 3)||Text display wizard of STEP 7 Micro/WIN||1||1 (max. 187.5 Kbit/s)||-|
|KTP400 Basic Mono PN,
KTP600 Basic Mono PN,
KTP600 Basic Color PN,
|As from WinCC flexible 2008 Compact SP1||-||-||4 4)|
|KTP600 Basic Color DP||As from WinCC flexible 2008 Compact SP1||1||1||-|
|KTP1000 Basic Color DP||As from WinCC flexible 2008 Compact||1||4||-|
|KTP1000 Basic Color PN,
KTP1500 Basic Color PN
|As from WinCC flexible 2008 Compact||-||-||4 4)|
The required tool specified, if specified separately, is the minimum requirement with regard to release, version, service pack or HSP on the one hand and the tool version "Lite", "Compact", "Standard", etc. on the other hand.
The HMI device can also communicate with an PPI master in the same network, if only S7-200 connections are configured in the project for it. This is the exception. An MPI master cannot usually access a PPI master in the same network.
|3)||TD 200: the text display sets itself automatically to the protocol concerned.|
|4)||Only one HMI component can communicate with the S7-200 at any one time (on account of the connection management via TSAP).|
|5)||As from ProTool/Lite 3.0 and ProTool 3.0 you can also select the MPI and PROFIBUS protocol for OP3, OP5, OP15A and OP15C.|
An MPI master cannot usually access a PPI master in the same network.
- In the case of the MPI protocol the CPU communicates with each HMI device via a separate connection. This effectively avoids communication problems. However, the number of HMI devices that you can connect to an S7-200 CPU is greatly limited and depends on the type of CPU. The following table gives an overview.
MPI (DP/T) Number of HMI comp.
CPU Port 0
Max. baud rate
CPU Port 0
Number of HMI comp.
CPU Port 1
Max. baud rate
CPU Port 1
Number of HMI comp.
EM 277 Port
(as from firmware 1.1)
3 19.2 kbit/s - - - CPU 214
(as from firmware 1.1)
3 19.2 kbit/s - - - CPU 215 3 19.2 kbit/s 5 12 Mbit/s - CPU 216 3 19.2 kbit/s 3 19.2 kbit/s - CPU 221 3 187.5 kbit/s - - - CPU 222 3 187.5 kbit/s - - - CPU 224 3 187.5 kbit/s - - - CPU 224XP 3 187.5 kbit/s 3 187.5 kbit/s CPU 226 3 187.5 kbit/s 3 187.5 kbit/s - EM 277 - - - - 5 /
You can connect up to 3 pushbutton panels of the same type (PP7, PP 17-I or PP 17-II); these then all have the same functionality. You assign parameters to the pushbutton panels via the data block of the controller. S7-200 has only one data block and therefore multiple functions cannot be provided for the panels (Entry ID: 691006).
Only one TP 070 without any other nodes may be connected to each CPU interface.
- In the case of the PPI protocol, you can theoretically connect 32 nodes, that is a maximum of 32 HMI devices. However, with PPI in one time interval there is only ever one logical connection between the nodes (time multiplex), which is established and disconnected for each communication. The baud rate is max. 187 kbit/s. This practically reduces the number of HMI devices to three per interface.
Now, in PPI mode, if several HMI devices (PPI masters) access the CPU (PPI slave), it might happen that an HMI device constantly arrives at the CPU that is occupied by another HMI device (or by another PPI master) and is no longer updated. In this case, you should increase the update cycles of the HMI devices. You do this in the relevant configuration tools of the HMI devices or with the text displays TD 100/200(C) in the Micro/WIN text display wizard.
Use Advanced PPI if the master concerned supports it. This type of protocol uses a separate connection like MPI. For example, when setting the PG/PC interface in Micro/WIN, you can select Advanced PPI when choosing a PPI connection.
More information on communication protocols of the S7-200 is available in the "S7-200 System Manual", chapter 7 - Communicating over a Network, in Entry ID: 1109582 .