Siemens SINUMERIK 840DE

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