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2 PROFIBUS DP Protocol Implementation
2.1 PROFIBUS ID Number and GSD-File
The PM130 uses the certified AnyBus®-IC PROFIBUS communication module from HMS
Industrial Networks AB with the registered PROFIBUS ID number 0x1810. The GSD file
hms_1810.gsd is shown in Section 6 and is provided with the device on an accompanying
CD.
2.2 PROFIBUS Version
The PM130 supports the basic version V0 of the PROFIBUS DP protocol. The V1 and V2
protocol extensions are not supported.
2.3 Baud Rates
The PM130 supports all standard baud rates from 9.6 kbps to 12 Mbps with automatic baud
rate detection, so the actual baud rate is only configured in the PROFIBUS master. The baud
rate indicated in the PM130 setup shows the baud rate used in communications between the
device CPU and the PROFIBUS communication module and does not concern the PROFIBUS
baud rate.
2.4 Node Address
The PROFIBUS node address can be manually set to the range of 0 to 126. When it is set to
126 (factory default), the device will support the Set_Slave_Address telegram from the
PROFIBUS master so the actual node address can be set using the PROFIBUS master
configuration tool. The actual node address received from the fieldbus master is saved to the
device setup and can be inspected from the device front panel.
2.5 Input and Output Buffers
The PM130 provides 32 bytes input and 32 bytes output buffers.
2.6 Extended Diagnostic Data
The PM130 does not support Extended Diagnostic Data.
2.7 PROFIBUS Fault Action
Bus in Off-line Mode
When the PROFIBUS goes off-line, the fieldbus outputs are cleared.
Bus in Clear Mode
When the PROFIBUS goes to idle, the fieldbus outputs are cleared..
Fail-safe Outputs State
The fail-safe state for PROFIBUS outputs is either zeroed outputs or frozen outputs so that
their contents would not be taken by the device as a new master command when the
PROFIBUS goes to on-line.
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