Siemens Simatic S7-1500 Manual - Page 30

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Connecting up

Note

PROFINET interface X3 with a transmission rate of 1000 Mbps

The PROFINET interface X3 supports a maximum transmission rate of 1000 Mbps.

Requirements:

• Devices on the PROFINET segment must support the 1000 Mbps transmission rate.

• The network infrastructure (network cables and outlets) must be category CAT 5e or

higher.

• The "Transmission rate" parameter in the properties of the port (X3) must be set as

follows in STEP 7:

– The "Autonegotiation" check box is selected

– "Automatic" is selected in the drop-down list

PROFIBUS interface X4

The table below shows the terminal assignment of the PROFIBUS interface. The assignment

corresponds to the standard assignment of an RS485 interface.

Table 3- 1

Note

Supply of I/O devices

The CPU 1518-4 PN/DP ODK does not provide a 24 V DC power supply on the PROFIBUS

interface. I/O devices (for example, PC adapter USB 6ES7972-0CB20-0XA0) are only

operational on the interface in conjunction with a plug-in power supply set for external power

supply.

The innovative successor product, PC adapter USB A2, receives the required power supply

via the USB port. This means it does not need a 24 V DC supply voltage and can be

operated without a plug-in power supply set for external power supply.

PROFIBUS interface terminal assignment

View

Signal name

RxD/TxD-P

Data line B

RTS

Request To Send

M5V2

Data reference potential (from station)

P5V2

Supply plus (from station)

RxD/TxD-N

Data line A

CPU 1518-4 PN/DP ODK (6ES7518-4AP00-3AB0)

Designation

Manual, 09/2016, A5E35681108-AA