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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")

"STATUS = 27" (0x001B) with the loadable S7 communication on the S7-300

Part number:

QUESTION:
What is the meaning of the Status "27" (hexadecimal: 0x001B) with the loadable S7 communication on the SIMATIC S7-300?

ANSWER:
The S7 communication on the S7-300 is done by FBs (loadable function blocks) and not by SFBs (integrated system function blocks) as in S7-400. If, however, you call an SFB instead of an FB in the S7 program of the S7-300, then the block issues an "ERROR" and the "STATUS = 27". This status indicates that the function block is not available for S7 communication on the S7-300. The communication FBs for the S7-300 are located in the library "SIMATIC_NET_CP > CP300 > Blocks".

Blocks

Designation

FB8

USEND

FB9

URCV

FB12

BSEND

FB13

BRCV

FB14

GET

FB15

PUT

Table 1: Communication FBs of the S7-300

Keywords:
Data transfer, S7 connection, Data communication, Error code, Receive, Send

Entry ID:18005211

Date:2004-01-13

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