Siemens SIMATIC NET PROFIBUS User Manual
Passive Components for RS-485 Networks
4-67
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
6GK1970-5CA20-0AA1 Release 2 05/2000
4.9.2
830-2 Connecting Cable
Uses
The 830-2 connecting cable is a preassembled cable for fast and cost-effective
attachment of PROFIBUS nodes (for example HMI) to programmable controllers
for transmission rates up to 12 Mbps.
attachment of PROFIBUS nodes (for example HMI) to programmable controllers
for transmission rates up to 12 Mbps.
Design
The 830-2 connecting cable consists of the PROFIBUS standard cable. It has a
9-pin sub-D male connector with a straight cable outlet at one end and a 9-pin
sub-D male connector with a 90
9-pin sub-D male connector with a straight cable outlet at one end and a 9-pin
sub-D male connector with a 90
°
cable outlet at the other. The connector with the
90
°
cable outlet is equipped with a PG interface. The terminating resistors can be
activated in both connectors. The cable is available in lengths of 3 m, 5 m and
10m.
10m.
Figure 4-35
830-2 Connecting Cable
Function
The 830-2 connecting cable connects the following:
S
The electrical interface of the Optical Link Module (OLM, OBT) and the
PROFIBUS interface of a PROFIBUS node
PROFIBUS interface of a PROFIBUS node
S
The electrical interface of two PROFIBUS nodes (OP, programmable controller)