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EMA90 - USER MANUAL
-31-
8.5) OPTION PROFIBUS PORT (PF/S)
If this option board is installed, the instrument will be equipped with n°2 digital inputs, n°2 digital
outputs, n°1 serial port and a PROFIBUS port.
Profibus-DP is a multi-master systems. In the networks it’s possible to have up to 126 devices on the
same bus. In profibus-DP networks, the interchange of data between peripheral modules and the
master is made automatically by the profibus controller, which ‘virtualise’ the data exchange memory
of the DP devices in the memory of the master.
When “Ready” and “Data” LED blink the profibus communication is active.
In the following picture the pin-out of the Profibus-DP port:
1 Not connected 6 Power Supply (+5V)
2 Not connected 7 Not connected
3 RxD/TxD-P (B) 8 RxD/TxD-N (A)
4 RTS 9 Not connected
5 Gnd
The profibus interface detects automatically the baud rate of the network; in the following table are
showed the baud rate available:
9.6 Kbit/s 19.2 Kbit/s 45.45 Kbit/s 93.75 Kbit/s 187.5 Kbit/s 500 Kbit/s 1.5 Mbit/s 3 Mbit/s
It’s possibile to request to the manufacturer application examples, GSD files and protocol manual
(IM157).
VL1
VL2
VL3
N
S2 S2 S1 S1 S1 S2
I3 I2
I1
Do
1-
A B Di
2-
Di
2+
Di
1-
Di
1+
gn
d
Rx Tx
Do
1+
Do2-
Do2+
AUX
1 2
PROFIBUS
COM 2
DATA READY
!
C
AT
. III
600V
PROFIBUS PORT
9-pin D (female)
Connector
1 5
9 6