Siemens SIMATIC ET 200SP Manuel de l'utilisateur - Page 16

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Parameters/address space

3.3 Address space

Feedback voltage

A feedback may occur, for example, due to a crossover in a cable of a digital output module

and depends on the target status of the supply voltage L+:

If the supply voltage L+ of the I/O module is greater than 6 V, this is entered in the input data

in the respective bit.

● Byte 2 and 3 (for 12 I/O modules and 4 bytes of input data)

● Byte 4 to 7 (for 32 I/O modules and 8 bytes of input data)

● Byte 8 to 15 (for 64 I/O modules and 16 bytes of input data)

The feedback voltage can be evaluated via the user program in the following cases:

Table 3- 3

Under what circumstances can the feedback voltage be evaluated via the user program?

Supply voltage L+

Status detection of supply

safely disconnected

voltage L+ (input data)

Yes

Not available: Bit = 0

Yes

Available: Bit = 1

This does not refer to the supply voltage applied to the BaseUnit, but, for example, to the status information of a safety

relay.

Status detection of feed-

back voltage (input data)

Available: Bit = 1

Explanation

The feedback voltage detected is in the

range 6 to 12 V (e.g. in the event of a

fault in the system)

The feedback voltage detected is > 12 V

(e.g. in the event of a fault in the system)

Server module (6ES7193-6PA00-0AA0)

Manual, 03/2015, A5E03575337-AB