ABB 500 Series, Builder'S Manual

Page: 82 / 134

76
Configuring the 56/64 kbit data
communication modules
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The connector for X.21 is a 15 pin DSUB according to the X.21 standard. For RS530
the connector is a 25 pin DSUB according to the RS530 standard. The same 25 pin
DSUB is also used for the V.36 connection contrary to the 37 pin DSUB listed in the
standard. The pin lay-out is shown in
figure 38 and pin designations are explained in
table 38 .
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DCD Detection of carrier signal
TD Transmitted data
RD Received data
* not for V.36
8 GND
7
6 RCLK
5
4 RXD(A)
3
2 TXD (A)
1 SCREEN
15
14
RCLK(B) 13
12
RXD(B) 11
10
TXD (B) 9
15 pin DSUB
X.21
25 pin DSUB
13
12 TCLK DCE (B)
11 TCLK DTE (B)
10
9 RCLK (B)
8
7 GND
6
5
4 REQ SEND (A)
3 RXD (A)
2 TXD (A)
1 SCREEN
25
TCLK DTE(A) 24
DTE READY(B)* 23
22
21
DTE READY(A) 20
REQ SEND (B)* 19
18
RCLK(A) 17
RXD(B) 16
TCLK DCE(A) 15
TXD (B) 14
V.36, RS530
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