Siemens SINUMERIK 840DE User Manual page 52

4 Description of the NCU
4.3 NCU module interfaces
Signal names
XRS_PROFIBUSDP,
RS_PROFIBUSDP
RTSAS_PROFIBUSDP
RTSPG_PROFIBUSDP
DGND
VP
P24ext, M24ext
Signal type
B
O
VO
I
X111
SIMATIC interface
Connector name:
Connector type:
Maximum cable length:
Special features:
X112
Serial interface RS232 (reserved for service)
(only NCUs with front
Connector name:
plate type 1)
Connector type:
Maximum cable length:
Special features:
Table 4-6
Signal names
RxD
TxD
RTS
CTS
M
Signal type
O
I
VO
4-50
Bidirectional
Output
Voltage Output
Input
X112 pin assignments
Pin Name
1 Not assigned
2 RxD
3 TxD
4 Not assigned
5 G
Output
Input
Voltage Output
SINUMERIK 840D Configuring Manual NCU (PHD) – 03.06 Edition
Differential RS485 data – PROFIBUSDP
Request to Send AS – PROFIBUSDP
Request to Send PG – PROFIBUSDP
Signal Ground, isolated
+ 5 V, isolated
24 V supply voltage
X111
25-pole sub D socket connector
10 m
Non-isolated (basic isolation)
X112
9-pole sub D male connector
10 m
Non-isolated (no safe isolation)
X112
Type Pin Name
6 Not assigned
I 7 RTS
O 8 CTS
9 Not assigned
VO
Receive Data
Transmit Data
Request to Send
Clear to Send
Ground
© Siemens AG, 2006. All rights reserved
03.06
Type
O
I