Pepperl+Fuchs Blog

How to Use an AS-Interface Handheld Programmer

Posted by Tim Cicerchi on Tue, Oct 16, 2012

AS-Interface is a very simple network. All you do is address the module and slap it on the cable. The easiest way to address it is to use a handheld programmer.

AS-Interface Handheld

Although the handheld is easy and simple to use, it has some very powerful features. Here they are:

Fast addressing

The 3.0 AS-Interface handheld programmer is much faster than the earlier version. You no longer have to read the address of the node addressed before programming it. You can just arrow up to the address, full or A/B addressing is selected automatically, and the address is programmed in. All addresses programmed are then kept as a record at the bottom of the screen. This list allows you to keep track of recently programmed addresses so you don’t create duplicates.

I/O testing

If the address is between 1 and 31 the inputs can be read and the outputs can be written. This allows you to test a valve by stroking its cylinder or turn on a beacon light. As the outputs are engaged, the inputs can then also be read.

Safety Sequence

Safety modules are addressed the same as any other module on the network. One extra thing they have is a safety sequence. This 8-number sequence is sent when the safety devices connected to this safety module are released. You can quickly and easily determine on the handheld if the safety device is pushed in/connected or not. You can also copy this safety sequence down and enter it manually in the safety software. This allows a user to download a complete program to a safety monitor without actually having the devices connected.


Every node on the network has an AS-i profile. This profile is made up of the ID, IO, ID1, and ID2 codes. These numbers, read by the handheld, tell the master exactly how the device should perform on the network. The ID1 code is actually writable, unlike the others, allowing you to uniquely distinguish one module from another. Most people don’t change this code and I also suggest that you don’t.

This video will walk you through, step-by-step, on how to use the AS-Interface handheld programmer.

Topics: Cables/ Cordsets, AS-Interface

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