Renu Electronics GWY-500, Руководство пользователя

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Hardware
9
Doc No: UMAN\GWY-500-B\0106
REVISION 4
+5V DC
300 Ohm
220 Ohm
300 Ohm
B - Data Line
A - Data Line
Data Ground
Data Line: The Profibus user group recommends the following color coding for the data signal lines:
A-Data Line = Green B-Data Line = Red
These data signal lines must be connected to the corresponding signal terminals or pins at the master unit
and other stations (i.e. A to A, B to B).
RTS: The signal RTS (TTL signal relative to Data Ground) is meant for the direction control of repeaters in
case repeaters without self control capability are used.
+5V DC, Data Ground: The s5V DC and Data Ground are meant to power an externally mounted
bus terminator.
The powering of the 220 © termination resistor ensures a defined idle state potential on the data lines. To
ensure proper functioning up to the highest baud rate, each bus segment has to be terminated at both ends
of the cable.
B (-) Data Line
A (+) Data Line
DB9 Female
1
5
9
6
+5V DC
Data Ground
RTS
Shield / Functional
Ground
6
8
4
5
3
1
Profibus - DP Slave
(TTL Direction control for repeaters)
(Supply Voltage for terminator resistance)