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MODBUS TCP S7300 via CP343-1 as client

Created by: rahilansari at: 7/29/2015 1:36 PM (5 Replies)

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7/29/2015 1:36 PM	Rate (0)
rahilansari Posts: 54 Rating: (0)	Could you please share with me the working code of MODBUS TCP S7300 via CP343-1 as client. ---------------------------------------------------------------------------------------------------- Split from Invalid connection via CP 343-1 (Modbus TCP).
rahilansari Posts: 54 Rating: (0)	Last edited by: Min_Moderator at: 7/29/2015 4:32:07 PM New subject after splitting
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7/29/2015 4:03 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello, I recommend to use the sample project which can be found in the Simatic Manager File -> open -> sample project -> browse Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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7/30/2015 11:28 AM	Rate (0)
rahilansari Posts: 54 Rating: (0)	Kaulquappe Hello, I recommend to use the sample project which can be found in the Simatic Manager File -> open -> sample project -> browse Regards, Kaulquappe Dear Kaulquappe Thanks a lot for your reply. I just want to confirm that whether the connection will establish and data transfer without License since I don't have license. Below is the code I called FB 108 in OB1 and OB100. OB1: Network X: A "Always_ON" A( O "CONTROL DAT".Trigger_Once O "CONTROL DAT".Trigger_Cont ) AN "CONTROL DAT".BUSY AN "CONTROL DAT".Finished = L 20.0 A L 20.0 FP "CONTROL DAT".Trigger_Pulse = "CONTROL DAT".ENQ_ENR A L 20.0 AN "CONTROL DAT".Trigger_Cont R "CONTROL DAT".Trigger_Once Network Y: A "CONTROL DAT".ENQ_ENR = L 20.2 BLD 103 CALL "MODBUSCP" , "MODBUS_IDB" id :=W#16#1 laddr :=W#16#130 MONITOR :="CONTROL DAT".MONITOR REG_KEY := server_client:= single_write := data_type_1 := db_1 := start_1 := end_1 := data_type_2 := db_2 := start_2 := end_2 := data_type_3 := db_3 := start_3 := end_3 := data_type_4 := db_4 := start_4 := end_4 := data_type_5 := db_5 := start_5 := end_5 := data_type_6 := db_6 := start_6 := end_6 := data_type_7 := db_7 := start_7 := end_7 := data_type_8 := db_8 := start_8 := end_8 := ENQ_ENR :=L20.2 LICENSED := BUSY :="CONTROL DAT".BUSY DONE_NDR :="CONTROL DAT".DONE_NDR ERROR :="CONTROL DAT".ERROR STATUS :="CONTROL DAT".STATUS STATUS_FUNC :="CONTROL DAT".Save_STATUS_FUNC IDENT_CODE :="CONTROL DAT".IDENT_CODE UNIT :="CONTROL DAT".UNIT DATA_TYPE :="CONTROL DAT".DATA_TYPE START_ADDRESS:="CONTROL DAT".START_ADDRESS LENGTH :="CONTROL DAT".LENGTH WRITE_READ :="CONTROL DAT".WRITE_READ NOP 0 OB100 Network X AN "Always_OFF" S "CONTROL DAT".Trigger_Once S "CONTROL DAT".Trigger_Cont Network Y A "Always_OFF" = L 20.0 BLD 103 A "Always_OFF" = L 20.1 BLD 103 CALL "MODBUSCP" , "MODBUS_IDB" id :=W#16#1 laddr :=W#16#130 MONITOR := REG_KEY := server_client:=L20.0 \\Always_OFF bit single_write :=L20.1 \\Always_OFF bit data_type_1 :=B#16#3 db_1 :=W#16#64 \\DB100 start_1 :=W#16#1 end_1 :=W#16#32 data_type_2 := db_2 := start_2 := end_2 := data_type_3 := db_3 := start_3 := end_3 := data_type_4 := db_4 := start_4 := end_4 := data_type_5 := db_5 := start_5 := end_5 := data_type_6 := db_6 := start_6 := end_6 := data_type_7 := db_7 := start_7 := end_7 := data_type_8 := db_8 := start_8 := end_8 := ENQ_ENR := LICENSED := BUSY := DONE_NDR := ERROR :="CONTROL DAT".ERROR STATUS :="CONTROL DAT".STATUS STATUS_FUNC :="CONTROL DAT".Save_STATUS_FUNC IDENT_CODE := UNIT := DATA_TYPE := START_ADDRESS:= LENGTH := WRITE_READ := NOP 0
rahilansari Posts: 54 Rating: (0)
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7/30/2015 11:34 AM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Rahilansari, the code you posted is not the one of the sample project. Please note: the outputs of the Modbus FB are displayed dynamically, they are only available one cycle. You must evaluate / store them as it is shown in the sample. The connection establishment can be checked in the special diagnosis of the CP. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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7/30/2015 2:06 PM	Rate (0)
rahilansari Posts: 54 Rating: (0)	Kaulquappe Hello Rahilansari, the code you posted is not the one of the sample project. Please note: the outputs of the Modbus FB are displayed dynamically, they are only available one cycle. You must evaluate / store them as it is shown in the sample. The connection establishment can be checked in the special diagnosis of the CP. Regards, Kaulquappe Dear Kaulquappe Thanks again for your reply. Will the correction you addressed have the effect on communication?? Also I have attached the picture where you can see the communication status is established but no data transfer.Also will you please confirm me that the License is must or it can work without license also since i am out of budget and its just a one to one connection I don't have huge modbus network. Attachment AA1.jpg (403 Downloads)
rahilansari Posts: 54 Rating: (0)
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7/30/2015 2:25 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Rahilansari, with the code you use at the moment you can't monitor whether a job was executed with or without error. The library is subject to license conditions. For test purposes it can be used without license. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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