Atlas Copco Power Focus 4000 - Page 216

Fieldbus
216 (428) 9836 3123 01
Hardware
Fieldbus connectors
The ProfiBus-DP standard EN 50170 (DIN 19245) recommends the use of a 9 pin female D-sub
connector. Depending on the protection class and type of application, other connector designs are also
allowed.
Connector 9-pin female D-sub
Pin
Name
Function
Housing
Shield
Connected to PE
1
Not connected
2
Not connected
3
B-Line
Positive RxD/TxD according to RS485 specification
4
RTS
Request to send
+5V BUS and GND BUS are used for bus termination. Some devices, such as optical transceivers
(RS485 to fiber optics) may require an external power supply from these pins.
5
GND BUS
Isolated GND from RS484 side
+5V BUS and GND BUS are used for bus termination. Some devices, like optical transceivers
(RS485 to fiber optics) may require an external power supply from these pins.
6
+5V BUS
Isolated +5V from RS484 side
+5V BUS and GND BUS are used for bus termination. Some devices, like optical transceivers
(RS485 to fiber optics) may require an external power supply from these pins.
7
Not connected
8
A-Line
Negative RxD/TxD according to RS485 specification
9
Not connected
Node address
Node address is set with the two rotary switches on the fieldbus module; this enables address settings from
1-99 in decimal form.
Switch 1 x10 / Switch 2 x1. (See switches on the top drawing)
Example: Address = (Left Switch Setting x 10) + (Right Switch Setting x 1)