Mechanical Design Of The Rs 485 Repeater With Order Number; Description And Functions Of The Rs 485 Repeater - Siemens SIMATIC S5 Manual

6.2

Mechanical design of the RS 485 repeater with order number

6ES7 972-0AA00-0XA0
Mechanical design Table 6-3 shows the RS 485 repeater.
Table 6-3 Description and functions of the RS 485 repeater (order number 6ES7 972-0AA00-0XA0)
Appearance of the repeater
DC
L+ M PE M 5.2
24 V 24 V
ON
ON
SIEMENS
RS 485-REPEATER RS 485 REPEATER
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a
RS 485 repeaters: installing, connecting and operating
No.
Terminal for power supply to the RS 485 repeater (pin M5.2 is the
ground reference for measuring the voltage transient between A2
and B2).
Shield clamp for strain relief and grounding the bus cable of bus
segment 1 or bus segment 2
Terminals for bus cable of bus segment 1
Terminating resistor for bus segment 1
Switch for baud rate. The positions are:
0: Bus segments disconnected
1: 9.6 kbaud
2: 19.2 kbaud
3: 93.75 kbaud
4: 187.5 kbaud
Terminating resistor for bus segment 2
Terminals for bus cable of bus segment 2
Clamp for securing the RS 485 repeater to standard-section busbar
Interface for PG/OP on bus segment 1
Jumper for grounded or non-grounded installation
Function
5: 500 kbaud
6: 1.5 Mbaud
7: 3 Mbaud
8: 6 Mbaud
9: 12 Mbaud
6
6-3