DP/AS-Interface Link 20E

DP/AS‑Interface Link 20E connects PROFIBUS DP to AS‑Interface and has the following features:

• PROFIBUS DP slave and AS-Interface master
• Up to 62 AS‑Interface slaves, each with 4 digital inputs and 4 digital outputs as well as analog slaves can be connected
• Integrated analog value transmission (all analog profiles)
• Supports all AS‑Interface master functions according to the AS-Interface Specification V3.0
• Supply from AS-Interface cable; hence no additional power supply required
• Suitable for AS-i Power24V (from product version 2/firmware version 3.1) and for Standard AS-i with 30 V voltage.
• Supports the uploading of the AS-Interface configuration in STEP 7 V5.2 and higher

Design

• Compact plastic enclosure in degree of protection IP20 for standard rail mounting
• LEDs in the front panel for indicating the operating state and functional readiness of all connected slaves
• Setting of PROFIBUS DP address is possible by pressing a button
• LED indication of the PROFIBUS DP slave address, PROFIBUS DP bus faults and diagnostics
• Two pushbuttons for switching over the operating state and for adopting the existing ACTUAL configuration as the DESIRED configuration

Functionality

Communication

The DP/AS-Interface Link 20E enables a DP master to access all the slaves of an AS-Interface network.

The DP/AS-Interface Link 20E occupies a standard 32 bytes of input data and 32 bytes of output data in which the digital I/O data of the connected AS-Interface slaves (standard and A/B slaves) of an AS-i line is stored.

The size of the input/output image can be compressed so that only the actually required I/O address area is occupied in the system of the PROFIBUS DP master.

The analog I/O data can be accessed with the S7 system functions for read/write data records.

Configuration

The DP/AS-Interface Link 20E is configured as follows:

• With STEP 7 (classic), V5.1 SP2 or higher or STEP 7 (TIA Portal), V12 or higher:
  In the case of STEP 7 configuration, the AS-Interface configuration can be uploaded in STEP 7 V5.2 and higher. Furthermore, AS-Interface slaves from Siemens can also be conveniently configured in HW Config (slave selection dialog).
• By adopting the ACTUAL configuration of the AS-Interface by using the SET pushbutton on the front panel
• Alternatively, DP/AS‑Interface Link 20E can be integrated by means of the PROFIBUS GSD file in the engineering tool (e.g. for STEP 7 V5.1 and lower or for non-Siemens engineering tools).