Electrical Installation; General Information About Profibus; Profibus Bus Design; Connection, Power Supply, And Communication - ABB Sensyflow iG Operating Manual

5

Electrical installation

5.1 General information about PROFIBUS

PROFIBUS is a vendor-independent, standardized field bus for applications in manufacturing, process,
and building automation. The PROFIBUS technology has been defined as an international standard in
EN50170. Thus, every manufacturer of products can use the PROFIBUS standard.
The PROFIBUS family is made up by three protocol types, which are applied depending on the respective
application. Of course it is possible to interconnect all three protocol types in a single PROFIBUS network
in more complex systems. The base for this possibility is the compatibility of the protocol types.
The three protocol types are called PROFIBUS-DP, -PA and -FMS. For process automation the protocol
type DP and PA are of importance.
• PROFIBUS-DP (Decentral Periphery)
• PROFIBUS-PA (Process Automation)
• PROFIBUS-FMS (Field Message Specification)

5.2 PROFIBUS bus design

Fig. 5-1 PROFIBUS, bus design

5.3 Connection, power supply, and communication

In the device version described in this section the PROFIBUS cable is directly connected. The description
of the devices with PROFIBUS M12 bus connector can be found in
BUS DP via PROFIBUS M12 bus connector" on page
Caution
! Remove all power from the device before opening the rear device cover and the cover of the supply ter-
STOP
minal block!
16 Sensyflow iG, Version 1.00
Class 1 and Class 2
master
9.6 ... 93.75 ... 12 000 kBit/s
Repeater
RS 485 = H2-Bus
PROFIBUS-DP
Contr.
Field
room
device
device
Field
Field
non-Ex
DP/PA-
coupler
Ex i
Power
Trans-
unit
mitter
DP/PA-
coupler
Trans-
mitter
18.
Electrical installation
31.25 kBit/s
IEC 1158-2 = H1-Bus
PROFIBUS-PA
Ex i Ex i
Posi- Trans-
tioner mitter
PROFIBUS-PA
Posi- Trans-
tioner mitter
see section 5.4 "Connecting PROFI-
42/14-39 EN