IBHLink S7++:PLC-PLC communication
Contents
- 1 Ethernet to MPI / PROFIBUS
- 2 Ethernet to PROFIBUS via PROFIBUS CP (Multiplexing)
- 3 MPI – Ethernet – MPI without projected configuration / MPI – Ethernet/MPI – IBH Link S5++
- 4 MPI – Ethernet – MPI with S7 conection (projected) / MPI – Ethernet / MPI – IBH Link S5++
- 5 Connection via IBH Link Mode: Configuration via NetPro
Ethernet to MPI / PROFIBUS
Requirements:
- SIMATIC Manager
- IBH Link S7++ / HS with Firmware >= 2.142
- CPU with MPI or PROFIBUS Interface
- CPU with Ethernet onboard or Ethernet CP. The Interface must support S7 connections. It can be checked within the hardware
properties: S7 connection active (Server means passive).
Download: STEP®7 Sample: Ethernet to MPI/PROFIBUS
Active:
Passive:
Within NetPro the CPU must be connected with the Ethernet. An unspecified connection needs to be created:
To access several CPUs accordingly, several S7 connections need to be configured. The connection ID is relevant for the call of the FBs/SFBs. If the amount of CPUs exceeds the amount of possible S7 connections, Ethernet to PROFIBUS via PROFIBUS CP (Multiplexing) can be chosen.
Within the properties of the S7 connection the IP address of the IBH Links must be entered:
Within the Address Details enter the MPI address of the destination CPU.
The communication will be established usings the blocks FB14/FB15. There are different FB14/FB15 available. 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.
CPU with onboard Ethernet = Standard Library
CPU with Ethernet CP = SIMATIC_NET_CP
Sample:
CALL "GET" , DB14
REQ :=M0.0 //Start reading with positive edge
ID :=W#16#1 //S7 connection ID configured within NetPro
NDR :=M0.1 //Job status
ERROR :=M0.2 //ERROR flag
STATUS:=MW2 //STATUS infomation(Siemens documentation)
ADDR_1:=P#M 10.0 BYTE 20 //Source address connected CPU
RD_1 :=P#M 10.0 BYTE 20 //Destination address local CPU
Depending on the type of CPU the correct set of blocks, FB14/15 or SFB14/15 must be chosen. The final step is to tranfer the S7 program and the system data to the CPU.
Ethernet to PROFIBUS via PROFIBUS CP (Multiplexing)
Requirements:
- SIMATIC Manager
- IBH Link S7++/IBH Link S7++ HS with Firmware >= 2.142
- CPU with PROFIBUS CP
- CPU with Ethernet onboard or Ethernet CP. The Interface must support S7 connections. It can be checked within the hardware
properties: S7 connection active (Server means passive).
Download: STEP®7 Sample: Ethernet to PROFIBUS via PROFIBUS-CP
Active:
Passive:
Within NetPro the CPU must be connected with the Ethernet. An unspecified connection needs to be created:
Within the properties of the S7 connection the IP address of the IBH Links must be entered:
Within the address details as Rack and Slot a special ID for IBH Link Routing must be entered: Rack 7, Slot 31
Establish connection via FB/SFB 15 (PUT)
To establish a connection over a PROFIBUS-CP with an IBH Link S7++, more connection information is required, than NetPro permits to enter. For this reason the IBH Link S7++ can be set into the projected mode. That mode permits sending the required connection information with a call to the "PUT" block as a data structure. To set this mode, only a special ID must be entered in NetPro.
Create OB1:
Within the first network the SFB15 is called to handover the parameters. Within the second network the SFB15 for the data exchange is called.
CALL "PUT" , DB15
REQ :=M0.0 //Start reading with positive edge
ID :=W#16#1 //S7 connection ID configured within NetPro
DONE :=M0.1 //Job status
ERROR :=M0.2 //ERROR flag
STATUS:=MW2 //STATUS infomation(Siemens documentation)
ADDR_1:=P#DB65535.DBX 224.0 BYTE 8 //IBH Link S7++ ID for PROFIBUS connection.
With this ID the IBH Link S7++ gets the needed information for the connenction.
ADDR_2:=
ADDR_3:=
ADDR_4:=
SD_1 :="PLC_CONNECTION_RECORDS".Connection[0]
SD_2 :=
SD_3 :=
SD_4 :=
"PLC_CONNECTION_RECORDS" – Symbolic name of the DB, which contains the parameters for the connection. Connection[0] – Pointer to the start address within the DB, which contains the parameters for the connection. If the DB contains more than one connection, they can be selected via this parameter and access to several CPUs is possible.
CALL SFB 14 , DB14
REQ :=M10.0 //Start reading with positive edge
ID :=W#16#1 //S7 connection ID configured within NetPro
NDR :=M10.1 //Job status
ERROR :=M10.2 //ERROR flag
STATUS:=MW20 //STATUS infomation(Siemens documentation)
ADDR_1:=P#M 10.0 BYTE 20 //Source address connected CPU
ADDR_2:=
ADDR_3:=
ADDR_4:=
RD_1 :=P#M 10.0 BYTE 20 //Destination address local CPU
RD_2 :=
RD_3 :=
RD_4 :=
Depending on the type of CPU the correct set of blocks, FB14/15 or SFB14/15 must be chosen.
A DB is needed, which contains the parameters for the connection.
The parameters MPI address, Slot- and Rack No. are used. Entering an IP address is not needed using this kind of connection. If several connections are used, it is recommended to use UDTs.
MPI – Ethernet – MPI without projected configuration / MPI – Ethernet/MPI – IBH Link S5++
Requirements
- SIMATIC Manager or S7 for Windows® from IBHsoftec
- 2 x IBH Link S7++/IBH Link S7++ HS with Firmware >= 2.142
- The operating system of the CPU must contain the blocks XPUT and XGET (SFC67, SFC68).
The information, whether the CPU contains these blocks can be gathered from the Siemens CPU documentation.
For this type of connection, a projected configuration with NetPro is not necessary. Within the PLC program, the blocks XPUT/XGET are called to establish a connection from one IBH Link S7 to the next 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.
Download: STEP®7 Sample: MPI – Ethernet – MPI without projected configuration
CALL FB 67 , DB67
REQ :=M10.0 //Start reading with positive edge
DEST_ID :=0 //Pointer within parameter DB
DB_PARA :=100 //No. of parameter DB
IBHLINK_ADDR:=B#16#0 //MPI Address source IBH Link
SRC_ADDR :=P#M 100.0 BYTE 20 //Location of data in the destination CPU
DST_ADDR :=P#M 100.0 BYTE 20 //Location of data in the local CPU
RESULT :=MW2 //STATUS infomation
BUSY :=M3.0 //Job status
The information for the IBH Link on how to reach the destination CPU are stored within the parameter DB.
Rack and Slot No are 0 when using MPI. The parameters for S5 conenctions using the IBH Link S5++ are:
| Destination IP address | IP address of the IBHLink S5++ |
| Destination MPI address | 2 |
| Destination Rack | 0 |
| Destination Slot | 0 |
MPI – Ethernet – MPI with S7 conection (projected) / MPI – Ethernet / MPI – IBH Link S5++
Requirements
- SIMATIC Manager
- 2 x IBH Link S7++/IBH Link S7++ HS with Firmware >= 2.142
- CPU with MPI Interface
- Interface has to support S7 connections
Download: STEP®7 sample: MPI – Ethernet – MPI with S7 connection (projectet)
Within NetPro the CPU must be connected with the Ethernet. An unspecified connection needs to be created:
Within the properties of the S7 connection the IP address of the IBH Links must be entered:
Establish connection via FB/SFB 15 (PUT)
To establish a connection with an IBH Link S7++, more connection information is required, than NetPro permits to enter. For this reason the IBH Link S7++ can be set into the projected mode. That mode permits sending the required connection information with a call to the "PUT" block as a data structure. Another reason to use this connection is, if data needs to be exchanged with several CPU.
Create OB1:
Within the first network the SFB15 is called to handover the parameters. Within the second network the SFB15 for the data exchange is called.
CALL "PUT" , DB15
REQ :=M0.0 //Start reading with positive edge
ID :=W#16#1 //S7 connection ID configured within NetPro
DONE :=M0.1 //Job status
ERROR :=M0.2 //ERROR flag
STATUS:=MW2 //STATUS infomation(Siemens documentation)
ADDR_1:=P#DB65535.DBX 224.0 BYTE 8 //IBH Link S7++ ID for PROFIBUS connection.
With this ID the IBH Link S7++ gets the needed information for the connenction.
ADDR_2:=
ADDR_3:=
ADDR_4:=
SD_1 :="PLC_CONNECTION_RECORDS".Connection[0]
SD_2 :=
SD_3 :=
SD_4 :=
"PLC_CONNECTION_RECORDS" – Symbolic name of the DB, which contains the parameters for the connection. Connection[0] – Pointer to the start address within the DB, which contains the parameters for the connection. If the DB contains more than one connection, they can be selected via this parameter and access to several CPUs is possible.
CALL SFB 14 , DB14
REQ :=M10.0 //Start reading with positive edge
ID :=W#16#1 //S7 connection ID configured within NetPro
NDR :=M10.1 //Job status
ERROR :=M10.2 //ERROR flag
STATUS:=MW20 //STATUS infomation(Siemens documentation)
ADDR_1:=P#M 10.0 BYTE 20 //Source address connected CPU
ADDR_2:=
ADDR_3:=
ADDR_4:=
RD_1 :=P#M 10.0 BYTE 20 //Destination address local CPU
RD_2 :=
RD_3 :=
RD_4 :=
Depending on the type of CPU the correct set of blocks, FB14/15 or SFB14/15 must be chosen.
A DB is needed, which contains the parameters for the connection.
The parameters MPI address, Slot- and Rack No. are used. Entering an IP address is not needed using this kind of connection. If several connections are used, it is recommended to use UDTs.
The parameters for S5 conenctions using the IBH Link S5++ are:
| Destination IP address | IP address of the IBHLink S5++ |
| Destination MPI address | 2 |
| Destination Rack | 0 |
| Destination Slot | 0 |
Connection via IBH Link Mode: Configuration via NetPro
Voraussetungen
- Simatic Manager
- IBH Link S7++ / HS ab Firmware 2.142
- Schnittstelle muss S7-Verbindungen unterstützen
Download: STEP®7 Beispiel: Verbindung über IBH Link im Projektierten Modus
Diese Verbindungsvariante hat den Vorteil das Große Datenmengen schnell ausgetauscht werden können - bis zu 64K. Für die Kommunikation werden die Standardbausteine FB/SFB 8/9 (USEND / URCV) und FB/SFB 12/13 (BSEND / BRCV).
Routing-Modus muss in IBHLink S7++ aktiviert sein. Dieser Modus ist ab Firmware Version 2.142 verfügbar. In diesem Modus sind keine unprojektierte Verbindungen über RFC1006 mehr möglich! Verbindungen über den IBHNet-Treiber funktionieren weiterhin.
Der IBHLink S7++ wird in NetPro als eine Station angelegt.
Datei:IBH Link als Station.png
Folgende Baugruppe muss vrwendet werden:
MLFB: 6ES7 412-2EK06-0AB0 V6.0 in Rack 0, Steckplatz 2
MPI/Profibusadresse wie IBHLink S7++
IP-Adresse von IBHLink S7++
Konfiguration der Station im Hardwarekonfigurator:
Datei:IBH_Link_als_Station_HWK.png
In NetPro müssen neben der IBH Link Station auch alle CPUs angelegt werden, mit denen kommuniziert werden soll. Die S7-Verbindung wird von der tatsächlichen CPU über Ethernet zur IBH Link Station aufgebaut. Hierbei ist die tatsächliche CPU der aktive Teilnehmer.
Datei:Verbindung1.png
Datei:Verbindung1Parameter.png
Die Partner-Verbindungsresource wird automatisch vergeben und ist für den nächsten Schritt relevant.
Die IBH Link Station baut nun eine S7-Verbindung über Profibus zur zweiten tatsächlichen CPU auf. Hierbei ist die IBH Link Station der aktive Teilnehmer. Als lokale Verbindungs-ID wird hier nun die im vorherigen Schritt automatisch zugewiesene Verbindungsresource (im Beispiel: 10) angegeben.
Der Verbindungsstatus kann direkt in NetPro angezeigt werden:
Datei:Verbindungsstatus aktivieren.png
Mit dieser Verbindungsvariante sind komplexe Vernetzungen möglich:
Für eine Verbindung zu einem IBH Link S5++ muss keine Dummy-CPU in NetPro angelegt werden. Es reicht aus, lediglich eine unspezifizierte S7-Verbindung über Ethernet einzurichten. Die Partner-IP-Adresse ist in diesem Fall die IP-Adresse des IBH Link S5++. Zur Kommunikation müssen die Bausteine PUT/GET verwendet werden - SFB14/15.
Datei:VerbindungS5px800.png
