Beckhoff BC3150 User Manual download pdf (Page 76)

Safety Instructions

74 Fieldbus Components

ADS Services

Local process image task 1 port 801

Data can be read from and written to the local process image. If it is necessary for outputs to be written, it is

important to ensure that they are not used by the local PLC, because the local controller will overwrite these values.

The data is not associated with a watchdog, and therefore must not be used for outputs that would have to be

switched off in the event of a fault.

Index group Meaning Index offset (value range)

0xF020 Inputs 0...2047

0xF030 Outputs 0...2047

0x4020 Flags 0...4095

ADS services

AdsServerAdsState

Data type (read only) Meaning

String Start - the local PLC is running

Start - the local PLC is stopped

AdsServerDeviceState

Data type (read only) Meaning

INT 0 – Start - the local PLC is running

1 – Stop - the local PLC is stopped

AdsServerType

Data type (read only) Meaning

String BX PLC Server

The ADS port number in the Bus Terminal Controller for register communication is fixed, being set at 100.

Index offset (value range)

Index group

Hi-Word Low Word

Meaning

0 [READ ONLY] 0..127 0..255 Registers in the Bus Coupler

High word, table number of the Bus Coupler

Low word, register number of the table

1-255 0-3 1-255 Register of the Bus Terminal

High word, channel number

Low word, register number of the Bus Terminal

Note

Note when reading the register that the time out for the ADS block is set to a time longer

than 1 second.

Note

Note when writing to the registers that the password is set (see the documentation for the

particular Bus Terminal).

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Beckhoff BC3150 User Manual Page 76