User manual

Chapter 4 Configuration
Page 93 ©February 2009
Tid2 = Max. Tsdr
Tid1
The idle time 1 determines the minimum length required before a transmitting node can send the
next message after sending a message frame that is not acknowledged.
Tid1 = 35 + 2*Tset + Tqui
Trdy
The ready time determines the minimum time for a transmitting node to receive a response
message frame. Trdy = Min. Tsdr
4.11.4 Configuration Example
The Following example describes a simple configuration of a 105G connected to a simple
Profibus Slave I/O device. Described is the configuration of the local 105G Profibus master only,
for more detailed configuration examples, an application note can be downloaded from
www.elprotech.com.
The example will transfer 8 x digital points from the radio network to the slave device. A single
16-bit analog value will be transferred from the Profibus slave to the radio network. Several
configuration steps via E-Series Configuration Software are required:
• Profibus Network Configuration
• Fieldbus Configuration (Fieldbus Mappings)
• Radio Configuration (I/O or Block Mappings)
Profibus Network Configuration
Once the GSD file for the Profibus slave has been installed, the slave device can be added to the
Profibus network (see Configuration section above). For this example, the slave is a modular
device; therefore we add the necessary I/O modules to the slave. The example requires 8 x digital
points to be transferred to the slave - hence we add the ‘1 Byte Out’ module - and 1 x analog
point (16-bit) to be transferred from the slave – hence we add the ‘2 Byte In’ module (see below).
When these modules are added, configuration software automatically picks the next free fieldbus
interface registers (shown in the Input Address and Output Address columns), which may later
be altered by double-clicking on the relevant I/O module. In this example, the automatically