Passive Components for RS-485 Networks
4-65
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
4.9 Preassembled Connecting Cables
4.9.1 830-1T Connecting Cable
Uses
The 830-IT connecting cable is a preassembled cable for fast and cost-effective
attachment of DTEs to OLMs and OBTs.
Design
The 830-1T connecting cable consists of a twisted pair (stranded copper cores)
with a braid shield. It is fitted with a 9-pin sub-D male connector at both ends. Both
ends of the cable have terminating resistors (cannot be deactivated). The cable is
available in lengths of 1.5 and 3 m.
Figure 4-34 830-1T Connecting Cable
Function
The 830-1T connecting cable connects the following:
S The electrical interface of the Optical Link Module (OLM, OBT) with the
PROFIBUS interface of a DTE.
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