Siemens SIMATIC NET PROFIBUS manual Installation on an S7-300 Rail

Active Components for RS-485 Networks

Installation on an S7-300 Rail

To install the RS-485 repeater on an S7-300 rail, the catch on the rear of the RS-485 repeater must first be removed (see Figure 5-6):

1.Insert a screwdriver below the tongue of the catch (1) and

2.Push the screwdriver towards the rear of the module (2). Hold the screwdriver in this position!

Result: The catch is released from the RS- 485 repeater.

3.With your free hand lift the catch up as far as it will go and then remove the catch (3).

Result: The catch is removed from the RS-485 repeater.

4.Fit the RS-485 repeater onto the rail for an S7-300 (4).

5.Push it towards the back as far as it will go (5).

6.Tighten the securing screw with a torque of 80 to 110 Ncm (6).

Rear view: Front view: 4

2

1

3

5

680 to 110 Ncm

Figure 5-6 Installing the RS-485 Repeater on an S7-300 Rail

5-10	PROFIBUS Networks SIMATIC NET
	6GK1970-5CA20-0AA1 Release 2 05/2000