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Network transitions and links (DP) -- Setting up and parameterizing hardware -- Initializing and parameterizing modules
How do you parameterize IO Link master and devices across gateways with the S7 Port Configuration Tool (S7-PCT)?
How do you configure the DP/PA link or the Y link in the external master / STEP 7 V12 (TIA Portal)?
How do you link the AS-i Slaves to an S7-300 CPU with integrated PROFINET interface using the IE/AS-i Link?
Where can you find sample S7 programs and documentation for communication via PROFINET on the SIMATIC NET Quick Start Collection?
Where can you find sample programs and documentation for communication between a PC station and SIMATIC S7 via PROFIBUS using S7 Communication and incorporating an IE/PB Link gateway?
Where do you find sample programs and documentation on communication between S7-400 (PROFINET IO controller) and S7-300 (I slave) incorporating an IE-to-PB link gateway?
Where can you find sample programs and documentation for communication between a PC station and SIMATIC S7 using S7 communication and incorporating an IE/PB link gateway?
Routing of S7 and of Data Sets (PROFIBUS DP) via the Link Gateway IE/PB
How do you configure a ring redundancy with FDC 157-0 DP/PA couplers and active field distributors (AFDs)?
How do you connect a SIMATIC S7-300 as DP slave to a Y link in the hardware configuration of STEP 7?
Which options do you have for accessing PROFIBUS devices from a PC behind an IWLAN/PB link PN IO or an IE/PB link PN IO?
How do you connect the IM 157/IM 153-2 in the DP/PA Link to an external master or a SIMATIC S5? (GSD tool)
Incorporating new LINK modules in PCS7 V4.02
Set-up restrictions when using universal modules
Reduced user data capacity when using the diagnostics
Reading the input data of a DP slave configured by a different DP master
How do you configure an S7-300 CPU or a CP342-5 as DP slave to an S7-400H as DP master using a Y-link?
Configuration of the I/O Data on DP/DP Coupler
Retrieve Diagnostics of the DP/AS-i Link 20E
Configuring I/O addresses with DP/AS-i Link 20E
What are the special features of input/output addressing with the DP/DP coupler?
Set-up restrictions when using universal modules
Part number:

QUESTION:
Does the size of the I/O address area have an influence on the size of the configuration byte?

ANSWER:
If you configure a DP/DP coupler with an I/O address area of up to 16 bytes, one configuration byte is required. However, if you increase the input or output address area to more than 16 bytes (see Fig. 1 - Using a universal module with an 18 byte I-address area), this entails two configuration bytes. If you increase the address area yet further, three configuration bytes are required from the 33rd byte.

Note:
Under normal circumstances, you, as the user, have no influence over the use of the configuration bytes that are described here. The configuration bytes do not restrict the specified I/O address area of the DP/DP coupler either. They only form an internal setup limit that needs to be watched during configuration.



Fig. 1: Configuring a universal module with 18-byte input address area

Important:
You can configure up to 16 modules in a DP/DP coupler and the sum of the configuration data must not exceed 16 bytes. Please pay watch out for this when using universal modules and address areas greater than 16 bytes.


 Entry ID:17398401   Date:2004-02-03 
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