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Industrial Ethernet S7-300/400 CPs -- Configuring and programming communication -- Using communication blocks

	How do you copy the CFC chart "Modbus" from the sample project for OPEN MODBUS / TCP into your user project?
	What is the difference between the initialization and runtime parameters on the blocks for Modbus TCP?
	Why is the status value A090 (hex) output for Modbus TCP although you have entered the correct license?
	What are the differences between the licensed version and the downloadable demo version of the blocks for Modbus TCP?
	Why is the value A083 (hex) output permanently at the STATUS output parameter of the block for Modbus TCP when the ENQ_ENR=true input parameter has been set?
	How is data with variable message length transferred via the TCP protocol and received by an S7-300 station via the Industrial Ethernet CP?
	How do you program the function blocks FB14 "GET" and FB15 "PUT" in the S7 program of the S7-300 in order to transfer more than 160 bytes of data?
	Where can you find sample programs and documentation for communication from SIMATIC S5 modules to SIMATIC S7 modules via Industrial Ethernet using the UDP protocol?
	Where can you find sample programs and documentation for communication from SIMATIC S5 modules to SIMATIC S7 modules via Industrial Ethernet using the TCP protocol?
	Where can you find sample programs and documentation for communication from SIMATIC S5 modules to SIMATIC S7 modules via Industrial Ethernet using the ISO transport protocol?
	How do you program the FC10 "AG_CNTRL"?
	Which commands (CMD) of the FC10 "AG_CNTRL" are supported by the IE CPs?
	How many communication jobs may be used simultaneously in an S7-300 CPU for S7 communication via a CP343-1?
	Which ports are released for Modbus/TCP communication and how many Modbus clients can communicate with a SIMATIC S7 CPU as Modbus server?
	Notes on using an instance for multiple connection IDs
	Internal call of FC5 (AG_SEND) with FTP client blocks (FC 40-44) for the CP343-1 IT (6GK7 343-1GX11-0XE0)
	How do you program the communication blocks FB63 "TSEND", FB64 "TRECV", FB65 "TCON" and FB66 "TDISCON" in order to use the ISO-on-TCP protocol for data exchange by way of the integrated PROFINET interface of a CPU or by way of the CP443-1 Advanced?
	How do you program communication blocks FC11 and FC12 for the PROFINET IO device?
	Block calls for communications processors in multiple runtime layers
	Changing the input parameter of the user blocks "AG_SEND" and "AG_RECV" during the runtime of a job
	What should you watch out for if you transfer variables with the data type "REAL" when calling the communication blocks FC5/50 "AG_SEND/AG_LSEND" and FC6/60 "AG_RCV/AG_LRCV"?
	What should you pay attention to when using the communication blocks FC53 "AG_SSEND" and FC63 "AG_SRECV"?
	What points do you need to remember when calling communication blocks FC5/50 and FC6/60 in the STEP 7 user program of the CPU?
	How do you program communication blocks FC11 and FC12 for the PROFINET IO controller?
	How can you establish OPEN MODBUS / TCP communication from a SIMATIC S7 and where can you find further information?
	How do you program the communication blocks FC50 and FC60?
	Error STATUS "0x7000" on function block FC6 / FC60 (AG_SEND) with Send/Receive communication on the S7-400 controller
	How do you program the communication blocks FC5 and FC6?
	Sample program: S7 communication with the blocks SFB14 ("GET") and SFB15 ("PUT") with S7-400
	Sample Program: S7 Communication with blocks FB14 ("GET") und FB15 ("PUT") of the CPU 317-2PN/DP
	How do you program communication blocks FB8 "USEND" and FB9 "URCV" for data exchange on the S7-300?
	"STATUS = 27" (0x001B) with the loadable S7 communication on the S7-300
	How do you program communication blocks FB14 "GET" and FB15 "PUT" for data exchange in the S7 program of an S7-300 CPU?
	How do you program communication blocks FB12 "BSEND" and FB13 "BRCV" for data exchange in the S7 program of an S7-300 CPU?
	Repeating the "BSEND" job (SFB12) when the "BRCV" block (SFB13) is in the "disabled" state ("EN_R = 0")

S7-300 CPU 31x -- Configuring and programming communication -- Using communication blocks

	Which security modules can be reached with SOFTNET Security Client V4 over a secure IPsec tunnel connection?
	What is the difference between the initialization and runtime parameters on the blocks for Modbus TCP?
	Why is the status value A090 (hex) output for Modbus TCP although you have entered the correct license?
	What are the differences between the licensed version and the downloadable demo version of the blocks for Modbus TCP?
	Why is the value A083 (hex) output permanently at the STATUS output parameter of the block for Modbus TCP when the ENQ_ENR=true input parameter has been set?
	Which blocks for Modbus TCP can you rename or re-wire when the block numbers of the Mode blocks are already being used in the user program?
	How do you implement chronological messaging with S7-300 CPUs and WinCC?
	How do you program communication blocks FB14 "GET" and FB15 "PUT" for data exchange in the S7 program of an S7-300 CPU?
	How can you read out diagnostics data from a SIRIUS 3RK3 modular safety system using a S7-300/400 CPU?
	Which ports are released for Modbus/TCP communication and how many Modbus clients can communicate with a SIMATIC S7 CPU as Modbus server?
	How do you configure a specified and an unspecified S7 connection for data exchange between S7-300 and/or S7-400 by way of Industrial Ethernet CPs?
	What restrictions are there for active jobs when communicating with SFC 58 / SFC 59 and SFB 52 / SFB 53 via PROFIBUS DP and PROFINET IO?
	How do you program communication blocks FB12 "BSEND" and FB13 "BRCV" for data exchange in the S7 program of an S7-300 CPU?
	How do you program the communication blocks FB63 "TSEND", FB64 "TRECV", FB65 "TCON" and FB66 "TDISCON" in order to use the ISO-on-TCP protocol for data exchange by way of the integrated PROFINET interface of a CPU or by way of the CP443-1 Advanced?
	How do you program the communication blocks FB63 "TSEND", FB64 "TRCV", FB65 "TCON" and FB66 "TDISCON" in order to use the TCP protocol for data exchange by means of the integrated PROFINET interface of an S7-300 or S7-400 CPU?
	How can you establish OPEN MODBUS / TCP communication from a SIMATIC S7 and where can you find further information?
	How do you program the communication blocks FB67 "TUSEND", FB68 "TURCV", FB65 "TCON" and FB66 "TDISCON" in order to use the UDP protocol for data exchange by means of the integrated PROFINET interface of a CPU?
	How does data communication work between S7-300/S7- 400 and S7-200 via MPI using S7 basic communication?
	How great is data consistency in the PUT and GET S7 communication functions for the individual S7-300 CPUs and C7 complete devices?
	How can you access via PROFIBUS DP another CPU, which is connected to the PROFIBUS DP as a slave, from a DP master using basic communication with SFC72 "I_GET" and SFC73 "I_PUT"?
	How can you access consistent data without SFC14/15 as part of the process image?

S7-400 CPU 41x -- Configuring and programming communication -- Using communication blocks

	What is the difference between the initialization and runtime parameters on the blocks for Modbus TCP?
	Why is the status value A090 (hex) output for Modbus TCP although you have entered the correct license?
	What are the differences between the licensed version and the downloadable demo version of the blocks for Modbus TCP?
	Why is the value A083 (hex) output permanently at the STATUS output parameter of the block for Modbus TCP when the ENQ_ENR=true input parameter has been set?
	Which blocks for Modbus TCP can you rename or re-wire when the block numbers of the Mode blocks are already being used in the user program?
	How can you read out diagnostics data from a SIRIUS 3RK3 modular safety system using a S7-300/400 CPU?
	Which communication options are there in SIMATIC S7?
	How does data communication work between S7-300/S7- 400 and S7-200 via MPI using S7 basic communication?
	Consistent data in S7-400, summary of mechanisms
	Which ports are released for Modbus/TCP communication and how many Modbus clients can communicate with a SIMATIC S7 CPU as Modbus server?
	How do you implement chronological messaging with S7-400 CPUs and WinCC?
	How do you configure a specified and an unspecified S7 connection for data exchange between S7-300 and/or S7-400 by way of Industrial Ethernet CPs?
	How can you establish OPEN MODBUS / TCP communication from a SIMATIC S7 and where can you find further information?
	How do you use WinCC flexible to transfer a project to an operator panel via S7 routing?
	What restrictions are there for active jobs when communicating with SFC 58 / SFC 59 and SFB 52 / SFB 53 via PROFIBUS DP and PROFINET IO?
	How do you program the communication blocks FB63 "TSEND", FB64 "TRECV", FB65 "TCON" and FB66 "TDISCON" in order to use the ISO-on-TCP protocol for data exchange by way of the integrated PROFINET interface of a CPU or by way of the CP443-1 Advanced?
	How do you program the communication blocks FB63 "TSEND", FB64 "TRCV", FB65 "TCON" and FB66 "TDISCON" in order to use the TCP protocol for data exchange by means of the integrated PROFINET interface of an S7-300 or S7-400 CPU?
	How do you program the communication blocks FB67 "TUSEND", FB68 "TURCV", FB65 "TCON" and FB66 "TDISCON" in order to use the UDP protocol for data exchange by means of the integrated PROFINET interface of a CPU?
	How can you access consistent data without SFC14/15 as part of the process image?
	How great is data consistency in the PUT and GET S7 communication functions for the individual S7-400 CPUs?

Why is the value A083 (hex) output permanently at the STATUS output parameter of the block for Modbus TCP when the ENQ_ENR=true input parameter has been set?

Part number:

Description
The products below with the corresponding Modbus blocks are available for Modbus communication with the SIMATIC S7.

Product Modbus block

Modbus TCP CP FB108

Modbus TCP Redundant FB1733

Modbus TCP Redundant V2 FB909, FB907

Modbus TCP PN CPU FB102

You call the relevant Modbus block in the user program of the CPU.
You set the ENQ_ENR=true input parameter and the value A083 (hex) is permanently at the STATUS output parameter of the Modbus block.

The value A083 (hex) at the STATUS output parameter means that a new Modbus message has been triggered with the input parameter ENQ=true or ENQ_ENR=true, although the previous task is still running.

Below we describe the causes of the status value A083 (hex) and the remedies you can apply.

The value A083 (hex) only occurs at the STATUS output parameter when the Modbus block has been parameterized as client. If the status value A083 (hex) is output even though the S7 CPU is supposed to be working as server, then you must correct the parameterization of the Modbus block in OB100.
Triggered Modbus messages are always terminated with DONE / DONE_NDR or ERROR. No new message may be triggered while a message is being processed.
If the server for the S7 CPU is no longer accessible while a Modbus job is running, the status value A083 (hex) might be present after reconnection. In this case, insert the line below when setting ENQ_ENR:

O "CONTROL DAT".DONE_NDR
O "CONTROL DAT".ERROR
UN "CONTROL DAT".BUSY
S "CONTROL DAT".ENQ_ENR

Entry ID:58378388

Date:2012-02-29

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