Pg Patch Cord - Siemens SIMATIC S7-300 Hardware And Installation Manual

Configuring
The maximum cable lengths for RS485 Repeaters ...
... can be found in the Chapter Cable lengths.
Longer cable lengths
If you want to implement cable lengths above those permitted in a segment, you
must use RS485 repeaters. The maximum cable length possible between two
RS485 repeaters corresponds to the cable length of a segment (see the following
Chapter). Please note that these maximum cable lengths only apply if no other
node is interconnected between the two RS485 repeaters. You can connect up to
nine RS485 repeaters in series.
Please note that you have to add the RS485 repeater when you determine the
number of nodes in your subnet, even if it is not assigned its own MPI/PROFIBUS
address.
Technical data and installation instructions are found ...
... in the RS485 Repeater product information.

PG patch cord

Table 5-19
Type
PG patch cord
Stub cables
If bus nodes are connected to a bus segment via stub cables (e.g. PG via a normal
PG cable), then you must consider the maximum possible length of the stub cable.
Up to 3 Mbps, you can use a PROFIBUS bus cable with bus connector as the stub
cable.
Use the patch cord to connect the PG or PC when operating above 3 Mbps. In your
bus configuration you can use multiple PG patch cords with this order no. Do not
use other types of stub cable.
The maximum cable lengths for PG patch cords ...
... can be found in the Chapter Cable lengths.
5-44
PG patch cord
S7-300 Programmable Controller Hardware and Installation
Order No.
6ES7 901-4BD00-0XA0
A5E00105492-02