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4
Mounting Instruction
The module is plugged into the SE302/
SEH302/KE300 system components.
3 Min
It should be ensured that the interface mod-
ule is completely inserted.
The front knurled bolts must be tightened.
Please take care that the front blind fits close-
ly to BT300.
The power is supplied directly to the interface
module by the SE302 or SEH302 control
unit or the KE300 communication unit.
5
Initial Operation
Before commissioning, the proper seat of all
jumpers must be ensured.
5.1
Interface X 6.1
The interface is designed as a 25-pin SUB-D
plug.
The 25-pin plug provides the connections for
an RS232, RS422 or 20 mA interface. Any
one of these interfaces can be used. The in-
terface used is determined by the connection
wiring of the inserted plug.
Electric Drives and Controls | Bosch Rexroth AG 9/28
Before inserting the
Rexroth interface mod-
ules, the BT 300 card
rack must have been
voltage-free for at least
3 min.
1
14
Figure 1:
Pin Signal
Description/Function
1
NC
2
TxD
RS232 Send
3
RxD
RS232 Receive
4
RTS
RS232 Request Send
5
CTS
RS232 Enable Send
6
NC
Not Connected
7
ISO_GND Reference Potential Interface
8
NC
9
10 V
20 mA supply
in
10
10 V
20 mA supply
out
11
RxD_A
RS422 (for 11, 14, 18, 19)
serial data bus, receive +
12
Rx-/Rx+
20 mA Receive
13
Tx-/Tx+
20 mA Send
14
RxD_B
RS422 (for 11, 14, 18, 19)
serial data bus, receive –
15
NC
16
NC
17
NC
18
TxD_B
RS422 (for11, 14, 18, 19)
serial data bus, transmit –
19
TxD_A
RS422 (for11, 14, 18, 19)
serial data bus, transmit +
20
DTR
RS232 Data Terminal Ready
21
NC
22
Rx+
20 mA Receive
23
Tx+
20 mA Send
24
ISO_GND Reference Potential Interface
25
ISO_GND Reference Potential Interface
Table 2:
SUB-D-plug, 25pin (male)
13
25
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