Configuration Of The Rs232 Interface Connection (X2) - Siemens SINUMERIK 802C base line Technical Manual

Installing the Control System
Cable lengths
2.3.3

Configuration of the RS232 interface connection (X2)

Pin assignment of connector on the CNC side
2-12
The maximum cable length depends on the specifications of the encoder
power supply and on the transmission frequency.
To provide fault-free operation, make sure that the following values are not
exceeded when using preassembled interconnecting cables from SIEMENS:
Table 2–6 Maximum cable lengths depending on the encoder power supply
Supply Voltage
5 V DC 4.75 V...5.25 V
5 V DC 4.75 V...5.25 V
Table 2–7 Maximum cable lengths depending on the transmission frequency
Encoder Type
incremental
RS232 interface
Connector designation: X2
Connector type:
Table 2–8 Pin assignment of connector X2
Pin Name Type
1
2 RxD I
3 TxD O
4 DTR O
5 M VO
Signal description:
RxD
TxD
RTS
CTS
DTR
DSR
M
Signal level
RS232
Tolerance Current Consumption
< 300 mA
< 220 mA
Frequency
1 MHz
500 kHz
RS232
9-pin sub-D plug connector
Pin Name
6 DSR
7 RTS
8 CTS
9
Receive Data
Transmit Data
Request to send
Clear to send
Data Terminal Ready
Data Set Ready
Ground
Max. Cable
Max. Cable Length
10 m
35 m
Type
I
O
6
I
9
SINUMERIK 802C base line
Length
25 m
35 m
1
5
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