Assignment Of The Interface X4A; Connection Of The Rs232 Interface; Connection Of The Rs485 Interface; Figure 3: Assignment Of The Interface X4A - KEB COMBIVERT G6 Instructions For Use Manual

CONTROL CIRCUIT ANALOG/DIGITAL

3.2 Assignment of the interface X4A

RxD-A (RS485)
RxD-B (RS485)
Figure 3: Assignment of the interface X4A

3.2.1 Connection of the RS232 interface

A RS232 cable is required to connect the control board with a PC. Transmission rate of
1.2...100 kBaud is possible.
6
9
Figure 4: Serial cable to connect the control board with a PC

3.2.2 Connection of the RS485 interface

ATTENTION
reserved 1
TxD (RS232) 2
RxD (RS232) 3
4
5
0058025-001D
1
5
The following instructions must be observed in order to prevent interfer-
ences at the RS485 interface:
• Use in pairs, twisted and shielded cable.
• Ground outer shield at one side (prior at interference-free side).
• Connect terminating resistors (120 Ω) at both ends on pair of wires
of the communication bus.
• If available, the internal shielding must be laid at the transmitter to
ground.
• Lay earth cable between the bus nodes.
A biasing can be used if there are still interferences. However, this should be
done only once at the communication bus (preferably at the master).
6 reserved
7 DGND (reference potential)
8 TxD-A (RS485)
9 TxD-B (RS485)
5
9
6
1
17