MX08 Multichannel Weighing System, Technical Manual, Rev. 2.5 Page 70 of 144
9.2. Electrical Connections
Profibus, RS-232C and power supply terminals are shown in Figure 8.1.
PROFIBUS Connector (DB9F)
Pin
Signal
Description
1
-
-
2
-
-
3
B Line
Positive RxD / TxD, RS-485 level
4
RTS
Request to send
5
GND Bus
Ground (isolated)
6
+5V Bus Output
+5V termination power (isolated)
7
-
-
8
A Line
Negative RxD / TxD, RS-485 level
9
-
-
Housing
Cable Shield
Ground
Figure 8.2 - MX08 PB serial interface connections
RS-232C Serial interface
Usage
Used for service port (xFace)
Baud rate
9600 bps
Length and parity
8 bit no parity
Start / Stop bits
1 start bit and 1stop bit
Profibus-DP interface
Usage
Interfacing with PC or PLC
Data formats
Profibus
Baud rate
Automatically detected and supported baud rates are 9.6 kbps,
19.2 kbps, 45.45 kbps, 93.75 kbps, 187.5 kbps, 500 kbps,
1.5Mbps, 3 Mbps, 6 Mbps and 12 Mbps. No ‘baud rate’ instance
exists.
Warning:
Connect the shield to the reference ground or shield pin of the power connector.
Warning:
Disconnect xFace PC software for Profibus interfacing.
