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RS-422/V.11 Interface
Only non-HEIDENHAIN devices are connected to the RS-422
interface.
The pin layouts on the TNC logic unit (X22) and on the
adapter block are identical.
External
device
e.g. PC
HEIDENHAIN TNC 426 B, TNC 430
www.EngineeringBooksPdf.com
RS-422
HEIDENHAIN
Adapter
connecting cable
block
max. 1000 m
Id.-Nr. 249 819 01
Id.-Nr. 250 478 ..
BK
1
1
1
sw
bl
2
2
2
gr
3
3
3
ws
4
4
4
gn
5
5
5
ws/gn
6
6
6
gr/rs
7
7
7
sw
8
8
8
rt
9
9
9
rs
10
10
10
br
11
11
11
ge
12
12
12
br/gn
13
13
13
rt/bl
14
14
14
15
15
15
X22
TNC
BK
1
1
GND
sw
BL
2
2
RXD
GY
3
3
CTS
WH
4
4
TXD
GN
5
5
RTS
WH/GN
6
6
DSR
GY/PK
7
7
DTR
BK
8
8
GND
RD
9
9
RXD
PK
10
10
CTS
BN
11
11
TXD
YL
12
12
RTS
BN/GN
13
13
DSR
RD/BL
14
14
DTR
15
15
Chassis
Signal
335
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