WAGO I/O System 750 Series - Assembly Instances

DeviceNet • 77
Process data and Diagnostic Status
WAGO-I/O-SYSTEM 750
DeviceNet
4.5.1.1 Assembly Instances
Permanently pre-programmed (static) assemblies in the device permit an easy
and rapid transmission of input and output images from the fieldbus Cou-
pler/Controller to the master. For this purpose, various assembly instances are
provided in the fieldbus Coupler/Controller:
Output 1 (I/O Assembly Instance 1):
The entire output data image is transmitted from the master to the Controller
via the corresponding I/O message connection. In this case, the data length
corresponds to the number of output data in bytes. Analog output data come
before digital output data.
Output 2 (I/O Assembly Instance 2):
The digital output data image is transmitted from the master to the Controller
via the corresponding I/O message connection. The data length is equivalent to
the number of digital output data and is rounded up to full bytes.
Output 3 (I/O Assembly Instance 3):
The analog output data image is transmitted from the master to the Controller
via the corresponding I/O message connection. The data length is equivalent to
the number of analog output data in bytes.
Input 1 (I/O Assembly Instance 4):
The entire input data image and one status byte are transmitted to the master
via the corresponding I/O message connection. The data length is equivalent to
the number of input data in bytes and one status byte.
Input 2 (I/O Assembly Instance 5):
The digital input data image and one status byte are transmitted to the master
via the corresponding I/O message connection. The data length is equivalent to
the number of digital input data and rounded up to full bytes. In addition, a
status byte is inserted.
Input 3 (I/O Assembly Instance 6):
The analog input data image and one status byte are transmitted to the master
via the corresponding I/O message connection. The data length is equivalent to
the number of analog input data in bytes and one status byte.
Input 1 (I/O Assembly Instance 7):
The entire input data image is transmitted to the master via the corresponding
I/O message connection. The data length is equivalent to the number of input
data in byte.