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Pin Assignment Of The Rs-422 Interface - Siemens SIMATIC Ident Operating Manual

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Highlights
● Diagnostics via a PC with the reader supplied with power from the system
● IP65 degree of protection
● Can be used in high temperature ranges
● Use in productive operation possible
● Switchover to diagnostics mode "on the fly" (parallel to regular operation)
Note
Protection from environmental influences
The IP65 degree of protection of the PC adapter is only valid if the USB protective cap is
fitted and the corresponding RS-422 cable is connected. During diagnostics, this degree of
protection is not present.
3.1.2

Pin assignment of the RS-422 interface

Pin assignment for connection to the CM or wide-range power supply unit
Pin assignment of the connector for PC adapter and CM or wide-range power supply unit
Table 3- 1
Pin
The knurled bolt of the M12 plug does not contact the shield (reader end).
SIMATIC RF-DIAG
Operating Manual, 09/2012, C79000-G8976-C292-01
RS-422 interface of the PC adapter (male connector)
3.1 The PC adapter for SIMATIC RF-DIAG
Pin
Assignment for
CM
Device end 8-
pin M12
1
+ 24 V
2
- Transmit
3
0 V
4
+ Transmit
5
+ Receive
6
- Receive
7
Free
8
Ground (shield)
Connecting hardware
Assignment for
wide-range power
supply unit
+ 24 V
Free
0 V
Free
Free
Free
Free
Ground (shield)
13

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Simatic rf-diag

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