Siemens PC 670 - Manual (Page 54)

Connecting and Switching on the Computing Unit Release 04/02
3-20 Panel PC 670 Computing Unit, Equipment Manual
Connecting the computing unit via an adapter
An adapter is available for connecting the computing unit to the PLC with earlier
standard connecting cables.
Table 3-1 Adapters for connecting the computing unit
Interface Connection Connecting cable
Order No.
Adapter
6ES5 734-2BF00
COM 1 as Computing unit to a SIMATIC S5
6ES5 731-1xxx0
15-pin 6ES5 731-6AG00
TTY port programmable controller
6ES5 731-0xxx0
25-pin 6ES5 731-6AG00
In order to maintain a data transmission rate of 9600 bps up to a distance of 1000 m,
the receive diode is connected to ground (reference) via the connecting cable.
Note
Lengths deviating from the standard connection cable (6ES5 734-2BF00) can be
obtained using Order No. 6ES5 734-2xxx0, whereby xxx stands for the cable
length length code.