
Connection
12 Beijer Electronics, MAEN843A
4.2 RS232C Connection
The serial interface is used as an RS232C interface. The dip switches has to be
set according to below for RS232C communication:
The COM-SIO connector S11 in the cable entrance area of the M70 is used.
4.2.1 RS232C Wiring Diagram
Note:
The RS232C connection cannot be used simultaneously with an Ethernet connection.
B5
B4 B2B3
1
2
3
4
6
8
9
10
11
7
1
2
3
6
S6
S1
1
K2
5
X1
ENABLE_ED2-
ENABLE_ED2+
ENABLE_ED1-
ENABLE_ED1+
E-STOP_ES2-
E-STOP_ES2+
E-STOP_ES1-
E-STOP_ES1+
GND
+24 V DC
1
2
3
4
5
6
7
8
9
10
13
14
15
16
K1
M70
S22 K3
K1
TxD
RxD
RxD
TxD
1
2
3
4
5
6
X3
SHIELD
RS-232-C
External device
TxD
RxD
GND
brown
yellow
green
grey
pink
brown-green
white-green
grey-pink
red-blue
black
violet
blue
white
orange
red
24 VDC
GND_IN
Enabling switch, circuit 1, pos.
Emergency stop, circuit 1
Emergency stop, circuit 1
Emergency stop, circuit 2
Emergency stop, circuit 2
Enabling switch, circuit 1, neg.
Enabling switch, circuit 2, pos.
Enabling switch, circuit 2, neg.
Connection box CB211
Connection cable
CABTTxxx
RTS
1
2
3
4
5
6
7
8
12
17
CTS
RTS
11
9
10
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