Siemens S7-200PLC User manual

Siemens S7-200PLC Ethernet Adapter
ES-ETH-PPI
USER MANUAL
All rights reserved

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INDEX
Preface ………………………………………………………………………………………………… 3
Copyright Statement……………………………………………………………………………………3
Version Info …………………………………………………………………………………………….3
Related Documents …………………………………………..……………………………………….3
Product Content……………………………………………………………….……………………….4
(1)Characteristics & Technical Parameters……………………………………………….…………4
(2) External Structure &Pin Definition………………………………………………………………..6
(3)Inner Diagram …………………………………………………………………………………..…..8
(4)Parameters Setting …………………………………………………………………………….…..8
(5)The usage in the LAN ……………….……………………………………………………………14
1. STEP7 Micro/WIN software setting …………………………………………………………14
2. The communication between the PC and a S7-200PLC………………….………..…………18
3. The communication between the PC and multiple S7-200PLCs……….……….…………...19
4. The intercommunication among the multiple S7-200PLCs……………………………..…….25
(6) Remote communication in the internet ………………………………………………………...26
1. STEP7 Micro/WIN software setting ……………………………………………….….…………27
2. Remote communication between PC and S7-200PLC …………………………....….………30
3. Remote communication between two PCS S7-200PLCs ………………………….….….…..35
(7) Remote wireless communication in the 3G wireless internet…………………………….…..39
1. STEP7 Micro/WIN software setting………………………………………………………….…...39
2. Remote wireless communication between PC and S7-200PLC………………………………40
3. Remote wireless communication between two PCS S7-200PLCs …………………………..40
(8)Ordering Info…………………………………………………………………………………..……41
(9) Appendix: basic knowledge of Ethernet…………………………………………………….…………41
1. TCP.….….….….….….….….….….….….….….….….….….….….….….….….….….….…41
2. UDP………………………………………………………………………………….…..…..….42

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Preface
Thanks a lot for your choosing our products.
Before you use,please be sure to read this manual carefully, you will know its powerful and perfect
function and simple use.
This adapter is used for the communication between Siemens S7-200PLC and Ethernet, Internet
or 3G wireless network by the programming interface (RS485 interface) of S7-200 PLC.Please use
according to the manual,we won’t assume any liability of property damage or personal injury due to
your improper use.
We have the right to revise this maual at any time according to the needs of technology
development and it won’t be noticed before the revising.
CopyrightStatement
Any people and institutions copy all or part will assume the corresponding legal responsibility
without prior written consent.
VersionInfo
Document Name:《ES-ETH-PPI user manual》
Version:V2.0
Revising Date: September, 20,2010
RelatedDocuments
In order to use this adapter better, please also read the following two documents:
1.《Device Manager Parameter Setting Software Manual》
2.《VCOMM Virtual Serial Port Software Manual》

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Product Content
1. ES-ETH-PPI 1PC
2. RJ45 Cable 1 PC,2 M
3.CD 1PC
(1)Characteristics&TechnicalParameters
ES-ETH-PPI is the industrial product which use the Ethernet and Internet or 3G wirelss network to
achieve Siemens S7-200PLC networking communication. It integrates many complex network
protocols, support TCP Server,TCP Client,UDP Unicast,UDP Multicast etc many modes.It has
10M/100M adaptive Ethernet interface and 10-bit and 11-bit RS485 interface which meets
Siemens technical specifications.You only need to go on simple setting and then let the
S7-200PLC go on network communication.
The RJ45 port,RS485 interface and power supply port are all isolated in order to suit harsh
environment in the industrial situations. Especially the isolated power supply port and each signal
pin has anti-static protection and surge protection which can solve the communication port easily
damaged problem for Siemens S7-200PLC.
Notice: When ES-ETH-PPI is used to communicate between PC and S7-200 PLC,you need to set
the local connection as “Modem connection” in the STEP7 Micro/WIN software.When it’s used to
communicate between PLC and PLC,you only can use the free port RS485 communication
mode,can’t use Siemens PPI,multi-master PPI or advanced PPI protocol,also MPI and profibus
protocol.
◆High-speed, reliable industry standard, anti-interference design suit for the harsh
electromagnetic environment
◆32 bit RISC (NP7 series) ARM7TDMI 55DMIPS
◆128KB SRAM，128KB Code + 32KB Boot
◆10M/100M adaptive Ethernet interface
◆Support Siemens technical specifications 10-bit and 11-bit RS485 communication mode
◆Support RS485 data bits 5，6，7，8 settable
◆Support RS485 stop bit 1，1.5，2 settable
◆Support RS485 Parity NONE,ODD,EVEN,MARK,SPACE settable

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◆Support RS485 baud rate 110～115200bps standard baud rate settable,not support 187.5Kbps
baud rate
◆Support PPI communication of RF modem and free port RS485 communication, not support
advanced PPI and multi-master PPI protocol
◆Protocols: TCP,UDP,ARP,IP,ICMP,DHCP,BOOTP,DNS
◆Support Dynamic DNS
◆Working mode can be chose TCP Server、TCP Client、UDP multicast and UDP unicast.
◆Built-in Flash memory, can save the setted parameters
◆Support Windows 95/98/ME/NT/2000/XP/2003/XP/Vista/Win7
◆RJ45 port 1500VDC electromagnetic isolated, RS485 interface 1000VDC electromagnetic
isolated, power supply 1000VDC electromagnetic isolated
◆Interface protection: power supply port has the reverse polarity protection and over current
protection,RS485 interface has the 500W anti-lightning surge protection and overcurrent protection;
all pins and terminals have anti-static protection
◆24V±10% DC power supply from PLC RS485 socket,1W power
◆Dimension: 65mm×51mm×26mm, 35mm standard rail installation
◆Temperature: -40°C to +80°C (-40°F to 176°F)，5% to 95% RH

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(2)Externalstructure&pindefinition
Ethernet interface: Standard RJ45 socket, automatically adapt 10M/1000M Ethernet .Use the
standard network cable, not crossover cable whether you connect the switch or directly connect
the PC.
The network status LED indicator on the RJ45 socket
LINK LED (LEFT,GREEN) ACT LED (RIGHT,YELLOW)
State description State description
Light on Network cable is connected
correctly, work properly. Flash Sending and receiving data through the RJ45 port
Flash Network cable is not plugged in, no
available network Extinguish No data transceiving

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Ethernet interface RJ45 socket signal array
Pin Signal name Function Type
1 Tx+ Positive phase Ethernet data sending
differential signal line output
2 Tx- negative phase Ethernet data sending
differential signal line output
3 Rx+ Positive phase Ethernet data receiving
differential signal line input
4 Not used -
5 Not used -
6 Rx- Negative phase Ethernet data receiving
differential signal line input
7 Not used -
8 Not used -
Default Button: Restore the default setted parameters. Insert the penpoint into the hole to press the
button for about 1 second, the internal Flash memory parameters will restore to factory default
parameters: IP = 192.168.0.250, Username = admin, Password = admin. When you forget the IP
address,user name or password, you can restore to the factory default parameters,and then reset
the parameters.
RS485 Interface: RS485 interface is the DB9M-pin plug which meets the Siemens S7-200 Series
PLC PPI interface technical specifications, the signal array match S7-200 series PLC PPI
interface, and has a 0.5 meter cable, you just simply plug the DB9M directly into the S7-200PLC
PPI interface outlet.
The signal array of RS485 socket(DB9M pin)
Pin No. Signal
name Description Input/output
1 NC No use -
2 M24V 24VDC power negative input
3 LTG_B RS485 signal positive input/output
4 NC No use -
5 M5V RS485 signal ground input
6 NC No use -
7 P24V 24VDC power positive input
8 LTG_A RS485 signal negative input/output
9 RTS_PG RS485 communication mode selection input
Shell Shielding Shield ground (chassis ground)
RS485 communication mode selection switch: you need to set the local connection as “modem
connection” in the STEP7 Micro/WIN software when you use the ES-ETH-PPI . At this time, you
need to choose 11-bit or 10-bit data communication mode.

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11-bit mode 8E1 communication mode with even parity, is usually used for
LAN(intranet)communication.
10-bit mode 8N1 communication mode without parity , is usually used for Internet
(Extranet) or 3G wireless network communication.
RS485 communication indicator: there are three LED indicators on the panel, and its working state
as the following table:
Indicator Light on Flash Extinguish
(Red) Power supply normal Fault Fault or no power
TxD
(Yellow) Fault or signal polarity reversal Serial port is receiving the date Fault or no communication
RxD (Green) Fault or signal polarity
reversal Serial port is sending the date Fault or no communication
(3)InnerDiagram
(4)ES-ETH-PPIparameterssetting
ES-ETH-PPI needs to be configured the parameters to work correctly, the configuration
parameters including the network parameters, communication protocols, connection, serial port
parameters; it can be very flexible to satisfy your application. Configuration parameters are
stored in the Flash memory, and they can be permanently stored without loss.
Use the standard RJ45 cable to connect the ES-ETH-PPI and router or switch, at the same time
make sure that the router or switch is connected to a computer in order to run the parameters
setting software .You also can use a standard RJ45 cable to directly connect ES-ETH-PPI and the
computer, no need crossover cable, this product has auto-polarity discrimination function for the
RJ45 cable.

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Plug the RS485（DB9M）of ES-ETH-PPI into the S7-200PLC RS485 socket and power on the PLC.
The same local area network (router) can connect multiple ES-ETH-PPI, but the same IP address
is not allowed, there will be conflicts if the same IP , and it only shows one of IP and abnormality.
You can press the Default button on the ES-ETH-PPI any time that could make it restore to the
factory dafault.
IP=192.168.0.250，Username=admin，Password=admin
You need to check your computer's IP address and gateway address, and confirm your computer
is in the normal Internet access, in the next setting, you need to set the gateway of ES-ETH-PPI as
same as the gateway of computer and router, that is to say, the ES-ETH-PPI and computer are in
the same subnet, all equipments in this subnet and routers have the same gateway.
Right-click Network Neighborhood> View Network Connection> Properties, then pop up “Local
Area Connection Properties” window:
Select the General page; click the Properties then pop-up the following window, record the IP
address and the gateway of the computer for later use:

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Copy the OEM Device Manager_SPCNML.rar file on the CD to your hard disk and extract it to the
current folder, do not modify the folder name “OEM Device Manager_SPCNML” which store the
setting software. Double click the following icon in the OEM Device Manager_SPCNML folder to
run setting software:

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Change language to English: Ctrl+L and then press “E”, or select the menu as the picture up
Click the Search button in the upper left corner, and then search out all ES-ETH-PPI connected to
the router after a few seconds, as shown below:

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Double-click the ES-ETH-PPI, pop-up dialog box, enter your user name and password to enter the
setting interface. The factory default setting: Username = admin, Password = admin
Click "Login" to enter the configuration interface.
You must firstly click”OK” to effect the modified parameters(parameters not saved at this time) after
you modify the parameters in every interface ,then click the "Apply Settings / Restart" to save
parameters and restart the ES-ETH-PPI to work with the new parameters and then exit the setting
software. As shown below:
About the parameters configuration details, please read the "Device Manager Parameters setting
software manual”.
After you configure the ES-ETH-PPI parameters, you need to run VCOMM virtual serial port
software on the PC, simulate the ethernet interface of ES-ETH-PPI as serial port (COM port) on

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the PC, then choose this serial port in the local connection of STEP7 Micro/WIN software ,as the
same as you use the traditional PC/PPI programming cable.
Notice:The COM port of local connection in the “set PG/PC interface” menu of Siemens
programming software STEP7 Micro / WIN can most support COM8, even though it can display
above COM8, in fact it can’t use.
About the detailed instructions of the VCOMM virtual serial port software, please read " VCOMM
virtual Serial Port software Manual.
Siemens S7-200PLC 11-bit RS485 interface communication parameters: data bits = 8 bits, parity =
EVEN (even parity), stop bit = 1, referred to as: 8E1. This is the PLC default mode.
Siemens S7-200PLC 10-bit RS485 interface communication parameters: data bits = 8 bits, parity =
NONE (no parity), stop bit = 1, referred to as: 8N1.This mode is used in the Internet
communication.
S7-200PLC baud rate = 9.6Kbps or 19.2Kbps , ES-ETH-PPI does not support 187.5Kbps baud
rate. Firstly please use such as PC / PPI programming cable to check the PLC baud rate,and the
ES-ETH-PPI serial port parameters must be set as the same parameters with the PLC, so we set
S7-200PLC baud rate as 9.6Kbps in the following examples.
Firstly set ES-ETH-PPI serial port parameters in parameters setting software , where the serial port
protocol box "RS232" option is supporting RS232/RS485/RS422 communication and must ensure
that this serial port parameters and the S7-200PLC RS485 interface parameters are the same,
Otherwise, It can’t normally communicate.

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The application of ES-ETH-PPI is very flexible and diverse, not limited to examples described
below. You can use the ES-ETH-PPI to connect the S7-200PLC to the Ethernet in order to
achieve the data communication from PLC to PC,PLC to PLC, multiple PLCs to PC and among
multiple PLCs etc.It can also be achieved the worldwide data communication through the Internet,
or wireless data communication through wireless LAN, 3G network card, 3G router.
(5)TheusageintheLAN
LAN communication generally refers to the same gateway, that is to say, the communication is
among multiple Ethernet devices which are connected to a same router.
The ES-ETH-PPI communication in the LAN needs to ensure that PC, ES-ETH-PPI and routers
have the same gateway, The gateway: 192.168.1.1, the computer IP address: 192.168.1.108,
ES-ETH-PPI IP address: 192.168.1.250 in the following examples.
1.STEP7Micro/WINsoftwaresetting
Select RS485 communication mode switch on the ES-ETH-PPI to "11bit" , use the even parity
11 bit communication mode,then use the setting software to set ES-ETH-PPI serial port
parameters as 9600bps, 8E1(8 data bits, even parity, 1 stop bit).
When the VCOMM virtual serial port software running on the PC simulate ES-ETH-PPI as the
COM port on the PC, the next using is just like PC / PPI programming cable, but you should set the
local connection in the “set PG/PC interface” menu of STEP7 Micro / WIN software as “modem

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connection” mode.
Click the "Communication" button to enter the communication settings, double-click "connection" to
set the modem parameters.

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Select the "modem connection" and configure serial port parameters, choose even parity 11 bit
mode.

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Click “Connect" button to establish the connection.
Double-click the "Refresh" to search the PLC, and then you can find the all PLCs connected to
the network,then select the PLC which you want to operate , in the next step you can upload,
download the data.

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2.ThecommunicationbetweenthePCandaS7-200PLC
Set the ES-ETH-PPI network parameters, the gateway of ES-ETH-PPI, PC and router must be
same, the DNS server needn’t to be setted because you don’t use the dynamic domain name on
the Internet.

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The setting of ES-ETH-PPI serial port parameters is omitted here, you can see the previous
description.
Set ES-ETH-PPI working mode as TCP Server, port No. = 27011, waiting for clients to
connect.

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Run the VCOMM virtual serial port software on the PC, set the simulated virtual serial port on the
PC. Select VCOMM as Client mode, initiatively to connect the server-side equipment. Choose the
device detector to create the virtual serial port.
Add a virtual serial port, the remote server IP address = ES-ETH-PPI IP address, remote server
monitoring port = ES-ETH-PPI port.
Click OK and exit the software and re-run VCOMM, the client side VCOMM will take the initiative to
connect the server side with IP address 192.168.1.250, port number 27011, it will create a new
serial port COM3 after establishing the connection, and it will appear in the Device Manager of the
Windows system, then you choose this serial port in your application software, such as STEP7
Micro/WIN.