Siemens PPX:5056860 ユーザーズマニュアル

 

2586546–0009

02/95

Copyright 1995 by Siemens Industrial Automation, Inc. 

All Rights Reserved — Printed in USA

Use the following procedure to install the
PPX:505–6860:

1.

Remove the power from the base in which
you are installing the PPX:505–6860.

2.

In the case of a 545/555 installation, install
the PPX:505–6860 in the same base as the
CPU and in the first double I/O slot
adjacent to the CPU.

In the case of a 575 installation, the
PPX:505–6860 must be installed in a 505
base within three feet of the 575 base that
is electrically bonded to the 505 base.

3.

Use an RS-485 cable to connect the CPU
and PPX:505–6860 RS-485 I/O ports
together. The RS-485 cable should be as
short as possible.

The correct wiring for the cable that
connects from the 545/555/575 CPU to the
new PPX:505–6860 RS-485 I/O channel
converter is shown in Table 1. This is
different from the normal connections for
an RS-485 I/O channel in that a cable with
two twisted, shielded pairs with 9 pin,
subminiature, male D-connectors at each
end is required (instead of the single pair
cable that is normally used). Pair like
named signals 3 and 8, and 4 and 9.

The suggested cable types follow:
Alpha #5472

2TP w/shield

24 AWG

BELDEN

 #9502

2TP w/shield

24 AWG

5

5

Ground

(Shields

)

3

3

D485–

4

4

RTS485–

8

8

D485

9

9

RTS485

4.

Connect the RF (coaxial) cable to the
PPX:505–6860 port that is labeled:

.

 See Figure 1.

NOTE:  All the remote bases connected to a
545/555/575 CPU must have RF RBCs. RS-485
bases cannot be connected between the CPU
and the PPX:505–6860.

RS-485/RF
I/O Channel
Converter

RS-485 I/O
From PLC

RF To
I/O BASES

505–6860