Instructions

How to Enable Trigger Byte on a Node
Procedure
1. Navigate to the Nodes & transacons page.
2. Select the decried node and transacon.
3. In the transacon sidebar Update mode menu, select Change of state on trigger.
4. Navigate to the I/O data map page.
5. The transacon with the trigger byte enabled is marked with a ash icon.
To open the Map Area sidebar, click on the ash icon.
6. In the Map Area sidebar, specify the map area to use and the trigger byte address:
Map area opons
• From PROFIBUS: The trigger byte is stored in the I/O data map Data from PROFIBUS area.
• General: The trigger byte is stored in the I/O data map General area.
• Unmapped: The transacon data is not used.
Address
• Enter an Address, the locaon in the specied Map area (From PROFIBUS or General) where the trigger
byte will be saved.
Value: 0 (default) to 1499
7.10.5. Endian Swap
By default PROFIBUS uses the big-endian format.
Big-endian
The big-endian format places the most signicant byte of the data at the byte with the lowest memory address.
Lile-endian
The lile-endian format places the least signicant byte of the data at the byte with the lowest memory address.
To convert between big-endian and lile-endian you must reverse the byte order.
Figure 66. I/O data map, Endian swap
To reverse the byte order:
1. In the web-interface le sidebar menu, click I/O data map.
2. In the data map, select the transacon for which you want to do swap the byte order.
Anybus
®
Communicator
™
- PROFIBUS to Modbus RTU/Serial I/O Data Map
Page 82 of 134 SCM-1202-177 1.2