ProSoft Technology 5204SE-MNET-PDPMV1 - Manual (Page 118)

5204SE-MNET-PDPMV1 ♦ ProLinx Gateway Reference
Modbus TCP/IP to PROFIBUS DP-V1 Pass-Through Master User Manual
Page 118 of 235
ProSoft Technology, Inc.
December 22, 2009
DFB Acyclic Mailbox Message: Get Live List - M340
This acyclic message returns 127 bytes of information about the nodes on the
network. Each byte holds the node type for one bus subscriber (node or device).
The position of the byte in the response data corresponds to the address (0 to
125) of the node on the network. The content of each byte tells whether the node
is a Master or Slave (multiple PROFIBUS Masters may co-exist on the same
physical network).
This acyclic message can be sent in all operation modes (STOP, CLEAR, and
OPERATE), however the gateway must be initialized properly.
MNETDPV1_MAILVAR_GetLiveList Variables - M340
This variable structure is the one to use with your control and sequencing logic
when you want to request a list of PROFIBUS network nodes (bus subscribers).