Functional Description, Installation & Settings Of Profibus Dp/V1; Functional Description; Installation; Settings - ECOLAB lmit 09 Kurz- Betriebsanleitung

4. Functional Description, Installation & Settings of
4.1

Functional Description

The PROFIBUS DP/V1
between a PROFIBUS
The interface was tested carefully to fulfil all requirements of the
According to the
communication procedures can be used.
The interface is build up as a plug-in module. Recognition procedure is automatically running
after power up.
4.2

Installation

The PROFIBUS-DP/V1 module can be used with different types of lines:
 Type of line A (Z = 135 - 165 Ω)
 Type of line B (Z = 100 - 130 Ω)
The data transmission speed has influence on the maximum allowed distance between the
PROFIBUS Master (PLC) and the connected
transmission it is necessary not to exceed the Limit-values of cable length in the table below.
(see also EN50170).
Table 1:
Speed [kbit/s]
Line length for type A
Line length for type B
The values in the table are meant as over all length of the bus cable. T-wires to the slaves
should not exceed 1m length. For bus systems with long distances between master and
slaves so called repeaters can be used. By using that repeaters also the maximum number
of slaves can be increased.
4.3

Settings

4.3.1 Termination resistors in
Fig. 4.1
Picture: Part of PC-board of the
PROFIBUS module with
connection terminals
417101561_LMIT09_DPV1
Interface for
master and the
DP/V1 spec, cyclic communication procedures as well as a-cyclic
Maximum cable length vs. transmission speed
1200m
1200m
PROFIBUS
To avoid reflections on the bus signal, the ends of the
bus cable must be provided with a line termination
depending on the type of line of 150 Ω (Type A)
or 120 Ω (Type B).
In case a
bus cable, a connectable terminating resistor has
already been arranged at the
It can be activated via the switch S1, which is located
left of the bus terminals.
LMIT 09 allows the digital, noise-free communication
LMIT 09.
PROFIBUS slaves. To establish a correct data
9.6 19.2 93.75
1200m 1200m 1000m 400m 200m 100m 100m
1200m 1200m 600m 200m
networks
LMIT 09 is the last slave at one end of the
- 17 -
PROFIBUS DP/V1
PROFIBUS organisation.
187.5 500 1500 3000 6000
PROFIBUS PCB.
Rev. 03-10.12