Installing And Removing The Rs 485 Repeater; Mounting The Rs 485 Repeater On The Busbar For S7-300 - Siemens SIMATIC S5 Manual

RS 485 repeaters: installing, connecting and operating
6.4

Installing and removing the RS 485 repeater

Overview
Installation on
busbar for S7-300
6-8
You can install the RS 485 repeater:
on a special busbar for S7-300
or
on a standard-section busbar (order number 6ES5 710-8MA..)
If you want to mount the RS 485 repeater on a special busbar for S7-300, you
must first remove the clamp at the rear of the RS 485 repeater (see Fig. 6-6):
1. Insert the blade of a screwdriver under the lip of the latch (1) and
2. press the handle of the screwdriver toward the rear of the module (2).
Hold the screwdriver in this position.
Result:This releases the clamp from the RS 485 repeater.
3. Using your free hand, slip the clamp up as far as it will go (3) and
disengage it from the module.
Result:The clamp is released from the RS 485 repeater.
4. Place the RS 485 repeater in position on the busbar for S7-300 (4).
5. Push the bottom back as far as it will go (5).
6. Tighten the securing screw to between 80 and 110 Ncm (6).
Rear:
2
1
3
Figure 6-6

Mounting the RS 485 repeater on the busbar for S7-300

Front:
4
5
80 to 110 Ncm
6
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a