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

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 4-20
PG patch cord
Stub cables
If you do not want to install the bus cable directly in the bus connector (for
example, when using an L2 bus terminal), you must take into account the
maximum length possible for the stub cable.
Up to 3 Mbps you can use a PROFIBUS cable with bus connector for your
connection.
Use the patch cord to connect the PG or PC when operating above 3 Mbps. In your
bus assembly you can use multiple PG patch cords with this order no. Do not use
other types of stub cables.
The maximum cable lengths for PG patch cords ...
... is found in the Chapter Cable lengths.
S7-300 Programmable Controller Hardware and Installation
A5E00105492-01
PG patch cord
Type
Configuring
Order No.
6ES7 901-4BD00-0XA0
4-37