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The parameters for S5 conenctions using the IBH Link S5++ are:
#Change byte offset db address step 7 siemens how to
The information for the IBH Link on how to reach the destination CPU are stored within the parameter DB. SRC_ADDR :=P#M 100.0 BYTE 20 //Location of data in the destination CPUĭST_ADDR :=P#M 100.0 BYTE 20 //Location of data in the local CPU IBHLINK_ADDR:=B#16#0 //MPI Address source IBH Link For very comfortable configuration of the communication parameters, the blocks XPUT_IBH and XGET_IBH (developed by IBHsoftec) are available and can be found within the sample.ĭownload: STEP7 Sample: MPI – Ethernet – MPI without projected configurationĭEST_ID :=0 //Pointer within parameter DB Within the PLC program, the blocks XPUT/XGET are called to establish a connection from one IBH Link S7 to the next IBH Link. The information, whether the CPU contains these blocks can be gathered from the Siemens CPU documentation.įor this type of connection, a projected configuration with NetPro is not necessary. The operating system of the CPU must contain the blocks XPUT and XGET (SFC67, SFC68). 2 x IBH Link S7++/IBH Link S7++ HS with Firmware >= 2.142 SIMATIC Manager or S7 for Windows® from IBHsoftec MPI – Ethernet – MPI without projected configuration / MPI – Ethernet/MPI – IBH Link S5++ If several connections are used, it is recommended to use UDTs. Entering an IP address is not needed using this kind of connection. The parameters MPI address, Slot- and Rack No. STATUS:=MW20 //STATUS infomation(Siemens documentation)ĭepending on the type of CPU the correct set of blocks, FB14/15 or SFB14/15 must be chosen.Ī DB is needed, which contains the parameters for the connection. REQ :=M10.0 //Start reading with positive edge If the DB contains more than one connection, they can be selected via this parameter and access to several CPUs is possible. "PLC_CONNECTION_RECORDS" – Symbolic name of the DB, which contains the parameters for the connection.Ĭonnection – Pointer to the start address within the DB, which contains the parameters for the connection. SD_1 :="PLC_CONNECTION_RECORDS".Connection With this ID the IBH Link S7++ gets the needed information for the connenction. Within the second network the SFB15 for the data exchange is called.ĪDDR_1:=P#DB65535.DBX 224.0 BYTE 8 //IBH Link S7++ ID for PROFIBUS connection. Within the first network the SFB15 is called to handover the parameters. To set this mode, only a special ID must be entered in NetPro. That mode permits sending the required connection information with a call to the "PUT" block as a data structure. For this reason the IBH Link S7++ can be set into the projected mode. To establish a connection over a PROFIBUS-CP with an IBH Link S7++, more connection information is required, than NetPro permits to enter. Within the address details as Rack and Slot a special ID for IBH Link Routing must be entered: Rack 7, Slot 31 IBH Link S7++/IBH Link S7++ HS with Firmware >= 2.142ĭownload: STEP7 Sample: Ethernet to PROFIBUS via PROFIBUS-CP The final step is to tranfer the S7 program and the system data to the CPU.Įthernet to PROFIBUS via PROFIBUS CP (Multiplexing) RD_1 :=P#M 10.0 BYTE 20 //Destination address local CPUĭepending on the type of CPU the correct set of blocks, FB14/15 or SFB14/15 must be chosen. STATUS:=MW2 //STATUS infomation(Siemens documentation)ĪDDR_1:=P#M 10.0 BYTE 20 //Source address connected CPU ID :=W#16#1 //S7 connection ID configured within NetPro REQ :=M0.0 //Start reading with positive edge Depending if a CPU with onboard Ethernet or a CPU with Ethernet CP is used, the correct set of blocks must be chosen, otherwise there will be no data exchange.ĬPU with onboard Ethernet = Standard Library The communication will be established usings the blocks FB14/FB15. Within the Address Details enter the MPI address of the destination CPU. Within the properties of the S7 connection the IP address of the IBH Links must be entered: If the amount of CPUs exceeds the amount of possible S7 connections, Ethernet to PROFIBUS via PROFIBUS CP (Multiplexing) can be chosen. The connection ID is relevant for the call of the FBs/SFBs. To access several CPUs accordingly, several S7 connections need to be configured. An unspecified connection needs to be created: Within NetPro the CPU must be connected with the Ethernet. Properties: S7 connection active ( Server means passive).ĭownload: STEP7 Sample: Ethernet to MPI/PROFIBUS The Interface must support S7 connections. CPU with Ethernet onboard or Ethernet CP. IBH Link S7++ / HS with Firmware >= 2.142