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S7-400 CPU 41x -- Product information -- Determining performance and quantity frameworks
How can you change the size of the available free main memory of a SIMATIC S7-400 CPU?
How many connections and communication jobs do SIMATIC S7-300 and S7-400 support simultaneously?
Which connection resources are occupied in the S7-400 CPU for communication connections and services of the Industrial Ethernet CP?
How many breakpoints can you insert when debugging a program?
What are the system limits in an F CPU for safe bidirectional data communication using S7 Communication?
How can you determine the size of the load memory and main memory of a SIMATIC S7-300/400 CPU?
Where do you find information on transmission times on the PROFIBUS or Industrial Ethernet?
What is a hardware interrupt and how do they work in the S7-400 system?
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?
S7-400 CPU 41x -- Configuring and programming communication -- Using communication blocks
When using the FB81 S_MODB on an S7-400 with more than 8 Kbytes of marker, how do you access the marker area above MB 255?
How do you enable the ad-hoc mode when you call the TRCV instruction?
How do you use the blocks for MODBUS/TCP communication over the integrated PROFINET interface of the S7-300 and S7-400 CPUs and IM151-8 PN/DP CPU in STEP 7 Professional (TIA Portal)?
How do you establish a redundant MODBUS/TCP communication over the integrated PROFINET interface of a CPU 41x-H in STEP 7 V5.5?
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 Modbus 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 do 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?
S7-300 CPU 31x -- Configuring and programming communication -- Using communication blocks
What is the volume of data that you can transfer with function blocks FB34 "GET_E" and FB35 "PUT_E"?
How do you cyclically read out the 8 channels of the FM 350-2 counter module as quickly as possible?
How do you read out the IP address of the S7-300 CPU in the user program at runtime?
How do you enable the ad-hoc mode when you call the TRCV instruction?
How do you use the blocks for MODBUS/TCP communication over the integrated PROFINET interface of the S7-300 and S7-400 CPUs and IM151-8 PN/DP CPU in STEP 7 Professional (TIA Portal)?
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 Modbus 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 do 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?
S7-300 CPU 31x -- Product information -- Determining performance and quantity frameworks
How many connections and communication jobs do SIMATIC S7-300 and S7-400 support simultaneously?
Which connection resources are occupied in the S7-300 CPU for communication connections and services of the Industrial Ethernet CP?
What are the system limits in an F CPU for safe bidirectional data communication using S7 Communication?
How can you determine the size of the load memory and main memory of a SIMATIC S7-300/400 CPU?
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?
Where do you find information on transmission times on the PROFIBUS or Industrial Ethernet?
What is a hardware interrupt and how do they work in the S7-300 system?
What is the maximum number of OPs that a CPU S7-300 can communicate with?
What can you do when the power requirement of the modules in the subrack exceeds the power supply provided by the CPU on the backplane bus?
Does PROFIBUS DP communication use connection resources?
What is the maximum number of CP modules that can be slotted in a SIMATIC S7-300/400 station?
Why, in the case of a networked SIMATIC S7, does the connection to the OP clear down when you call diagnostics functions with the PG or transfer blocks?
How many breakpoints can you insert when debugging a program?
C7 6xx -- Product information -- Determining performance and quantity frameworks
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 many connection resources can be managed by the C7-CPU or the C7-OP?
ET 200X -- Configuring and programming communication -- Using communication blocks
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?
ET 200S (standard modules) -- Configuring and programming communication -- Using communication blocks
When using the FB81 S_MODB on an S7-400 with more than 8 Kbytes of marker, how do you access the marker area above MB 255?
How do you set the input parameter TIME_RTS_OFF of the S_V24 instruction in the case of low data transfer rates?
How do you use the ET200S 1SI module in conjunction with a CPU S7-15xx?
How in WinAC MP 2008 do you program data transfer with the ET200S 1SI module for the 4-byte or 8-byte communication type?
Which CPU can you operate as a PROFINET I device?
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?
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 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 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 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?
What should you watch out for when connecting a SIMATIC HMI device configured with WinCC flexible ES to a SIMATIC ET 200 CPU?
"Report System Errors" function can be used with ET 200S CPU from firmware version V2.1
Using the SFB75 (send alarm to the DP master) on an ET 200S CPU
ET 200pro -- Configuring and programming communication -- Using communication blocks
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 "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 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 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?
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?
Part number:

Configuration Notes:
System functions and blocks SFB52 "RDREC" / SFC59 "RD_REC" (read record) are used to read data records of a component (module) of a DP slave/PROFINET IO device. System functions and blocks SFB53 "WRREC" / SFC58 "WR_REC" (write record) are used to write data records to a component (module) of a DP slave/PROFINET IO device.

Depending on the CPU used, the number of active jobs of the system functions and blocks SFB53/SFC58 and SFB52/SFC59 is limited.

The following table provides information about how many active jobs of the system functions and blocks SFB53/SFC58 and SFB52/SFC59 your CPU supports simultaneously.
 
System function/
system block
SFB 52 "RDREC"/
SFB 53 "WRREC"
SFC 59 "RD_REC"/
SFC 58 "WR_REC"
Explanation Data record from DP slave, PROFINET IO device Data record from DP slave
IM154 (ET 200pro)
IM151 (ET 200S)
IM147 (ET 200X)
4 jobs together with SFC 58/59 4 jobs together with SFB 52/53
CPU 312, CPU 313, CPU 314
CPU 315, CPU 316
4 jobs together with SFC 58/59 4 jobs together with SFB 52/53
CPU 317, CPU 319
CPU 318-2
8 jobs together with SFC 58/59 8 jobs together with SFB 52/53
CPU 41x1) 8 jobs each per PROFIBUS DP segment and PROFINET IO system 8 jobs each per PROFIBUS DP segment and PROFINET IO system
1) The number of simultaneous jobs on external PROFIBUS DP segments or PROFINET IO systems must not exceed 32 jobs per SFC/SFB.

Example:
With a CPU 414-2DP, a maximum of 48 jobs per SFC/SFB can be executed at the same time (8 each on the two PROFIBUS DP segments that are connected to the integrated interfaces of the CPU, and 32 on external PROFIBUS DP segments and PROFINET IO systems).

Rules:

  • There are no restrictions for simultaneous jobs in the subracks (CR, ER). The SFCs run synchronously via the backplane bus. Any number of synchronous SFCs can be called.
  • If you are operating multiple communication partners on the PROFIBUS network, then please make sure that never more than the specified jobs are active at the same time. Here one SFC/SFB can run several CPU cycles long.
  • The restrictions listed in this entry for the active jobs of the system functions and blocks SFB53/SFC58 and SFB52/SFC59 also apply to the blocks that call these system functions and blocks internally. These include the blocks FM_CS, PID_FM and FMCS_PID, for example.
    Example:
    When communicating with an FM 355 (4 channels parameterized) via the FMCS_PID block, 4 read jobs are occupied.

Note:
System functions SFC58/59 are available on all CPUs.

 Entry ID:15364459   Date:2009-03-03 
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