SIEMENS S7-200 PPI Direct

Transcription

1 SIEMENS S7-200 PPI Direct 1. verview This driver provides the software interface and communication protocol between XPANEL and SIEMENS SIMATIC S7-200 PLCs via PPI protocol. 2. Communication Setup: XPANEL Designer (1) Create a new device. For creating a new device activate the menu Tools -> I/ Devices or icon in toolbar. Following picture shows the first step of creating a new device. I/ Device Name Give a device name. This name will be used in the TAG configuration window of database accompanied by the Station Name. (2) Select a network type: SIEMENS S7 PPI Direct After selecting the K button of previous step, Serial Communication Configuration dialog box will be popped up as shown in following picture. SIEMENS S7-200 PPI - 1

2 In this window, select the Device Type as SIEMENS S7 PPI Direct and appropriate communication parameters. Those parameters must be matched with the PLC. Communication parameters should be configured as shown in the following table. Parameter Baud Rate Parity Data Bits Stop Bit Comm. Type Configuration 9600 or (must be matched with the one of PLC) Even 8 Bits 1 Bit RS485 Local ID The XPANEL occupies the station ID 0 (zero) for its network address. This XPANEL s address is fixed and cannot be changed. (3) Create a station Move to the Station tab of Serial Communication Configuration dialog box. In this dialog box, all the connected PLC stations can be configured and registered to the SIEMENS S7-200 PPI - 2

3 XPANEL. Each field can be configured with following rules. Station Name Give a name to the PLC. This name will be used in the database window accompanied with the Device Name. Station Type Choose the S7. (No other type can be selected.) Network ID This field has no meaning in this driver. (Ignored in runtime) Station No. Specify a decimal number between 1 and Bit Data Swap This option swaps bytes of all word or double word sized data. Following diagram shows an example of byte swapping. Word Data Double Word Data 12ABh 1234ABCDh AB12h 3412CDABh Almost all of the data type will be influenced by this option except INT8 / UINT8 / BCD8 / UBCD8. 32Bit Data Swap SIEMENS S7-200 PPI - 3

4 This option swaps words of all double word sized data. Following diagram shows an example of word swapping. Double Word Data 1234ABCDh ABCD1234h INT32 / UINT32 / BCD32 / UBCD32 / FLAT type of TAG values will be influenced by this option. Using Checksum This field has no effect. Comm. Error Message Pop Up If this item is checked, XPanel displays a communication error notification message at every Rx and Tx error. therwise(unchecked), XPanel does not display the message at data receive error. nly when there is data transmit (writing a TAG value to the station) error, the notification message is popped up. This message box will be closed automatically about 5 seconds after. 3. Communication Setup: S7-200 Following picture shows the screen shot of STEP 7-Micro/WIN. The network address and communication speed (Baud Rate) of PLC are configured in this dialog box. Please note that those set data should be matched with the device configuration of XPanel. SIEMENS S7-200 PPI - 4

5 4. Address Notation The address of TAG in XPanel has the following format. TAG Type Format Example Analog [Symbol][Address] VW064 Digital [Symbol][Address].[Bit Number] or [Symbol][Address][Bit Number] M012.3 or M0123 Address : decimal number ( ) Bit Number : decimal number (0..7) Following table shows the list of devices which can be referenced in XPanel database. Symbol Description Word Notation Bit Notation Type Access I Input - I7.7 Digital R Q utput - Q7.7 Digital R/W M Internal Memory - M31.7 Digital R/W SM Special Memory - SM85.7 Digital R/W T Timer - T127 Digital R C Counter - C127 Digital R IW Input IW7 - Analog R QW utput QW7 - Analog R/W MW Internal Memory MW31 - Analog R/W SMW Special Memory SMW85 - Analog R/W VW Variable Memory VW Analog R/W TW Timer SV TW127 - Analog R CW Counter SV CW127 - Analog R SIEMENS S7-200 PPI - 5

6 5. Communication Cable Wiring SDA SDB RDA RDB GND GND 1 5 Pin assignment of XPanel (RS422/485, 5 pin terminal) PPI Port (DB9) SIEMENS S7-200 SIEMENS S7-200 PPI - 6

7 6. Support Function Table Following table shows the list of functions that are supported by SIEMENS S7-200 PPI Direct communication driver. Function Support Remark Block Data Read Block Data Write String real Tag Word Swap Dword Swap Block Data Read This function makes it possible that is bulk data reading at a time. It will be applied when you use recipe, data bridge and trends at the Xpanel. Block Data Write This function makes it possible that is bulk data writing at a time. It will be applied when you use recipe, data bridge and trends at the Xpanel. String real Tag It makes the device as the serialized memory so you can communicate string data of Xpanel with PLC. Word Swap This function swaps bytes of all word or double word sized data. It depends upon 16Bit Data Swap configuration. Dword Swap This function swaps words of all double word sized data. It depends upon 32Bit Data Swap configuration. SIEMENS S7-200 PPI - 7