G3
Series
PROFIBUS
‐
DP
Technical
Manual
Page
52
TDG3PTTM1-2EN
02/09
Subject to change without notice
www.numatics.com/g3
PROFIBUS-DP Mapping
I/O Sizes
Outputs
Outputs are defined as any valve solenoid coil and/or any discrete output point from any output module. The
output size depends upon the physical configuration of the manifold (i.e. module type and how many are used).
Please reference the following pages for a detailed explanation for calculating the output size.
Inputs
Inputs are defined as physical input bits from input modules. Please reference the following pages for a
detailed explanation for calculating the input size.
Valve Side
The size for the “valve side” of the manifold consists of an output bit for each valve solenoid coil driver. This
value for the valve side size is configurable via GSD file. See the following table:
Discrete Side
The discrete side of the manifold is defined as all I/O modules connected to the left of the communication
node. This includes physically attached modules as well as any distributed sub-bus modules. I/O sizes for
the discrete side are automatically configured based on the I/O module type installed. However, the user can
affect these sizes manually via settable parameters on the node. The output value consists of physical outputs
(i.e. output bit for each output point). The input value consists of physical inputs (i.e. an input bit for each
input point).
Total I/O Size
The overall size of the I/O data for the manifold will consist of the valve size plus the discrete I/O size. The
I/O size can vary greatly, due to the many physical configurations. The worksheet on page 53 will allow
accurate sizing of the I/O data.
Selection
Outputs Bytes
Inputs Bytes
8 Solenoid Coils
1
0
16 Solenoid Coils
2
0
24 Solenoid Coils
3
0
32 Solenoid Coils
4
0