Installation and Connection
Profibus DP / Modbus
®
RTU / IEC 60870-5-103 via D-SUB-plug
Terminal marking X103
for the device:
MRA4
Electro-mechanical assignment for device: MRA4
The connection cable must be shielded. The shielding has to be fixed at the
screw which is marked with the ground symbol at the back side of the
device.
EN MRU4 10/09
Page 35
D-SUB assignment - bushing
1 Earthing/shielding
3 RxD TxD - P: High-Level
4 RTS-signal
5 DGND: Ground, neg. Potential of aux voltage supply
6 VP: pos. Potential of the aux voltage supply
8 RxD TxD - N: Low-Level
5
1
9
6