ProSoft Technology PS69-DPM - Manual (Page 81)

PS69-DPM ♦ CompactLogix or MicroLogix Platform Contents
PROFIBUS DPV1 Master User Manual
ProSoft Technology, Inc. Page 81 of 130
October 1, 2014
DDLM_Set _Parameter
The DDLM_Set_Parameter request is used to manually send new Slave parameters. This
service is only applicable for Slave devices which are configured within the PROSOFT.fdt
(SYCON.net) project. This service activates the DP-Norm primitive DDLM_Set_Parameter in
order to send parameters to a specific Slave during the run time. The Master creates the
parameters that are to be sent to the Slave in such a way that it adds 7 bytes to the
USR_PRM_DATA of the DDLM_Set_Parameter service. These 7 bytes contain standard
parameters of a Slave (Ident_Number, Watchdog_Factor, Group_Ident, and so on). The
parameters come from the internal configuration of the Master through the PROSOFT.fdt
(SYCON.net) configuration. The user program with this service has no influence on these 7
bytes. The MSG instruction Request /Confirmation format is as follows.
DDLM_SET_PARAMETER_REQUEST
Parameter Data Type Value Description
Reserved1 INT 0 Reserved
Reserved2 INT 0 Reserved
Reserved3 INT 0 Reserved
Command SINT 74 Command for the DDLM_Set_Parameter service
Reserved4 SINT 0 Reserved
UsrPrm[0] SINT 0..125 Address of the PROFIBUS Slave
UsrPrm[1..233] SINT n Slave parameter data, Slave specific
Note: The byte array UsrPrm[234] can be made smaller if needed. This saves memory. The value 234 is the
maximum number of parameters in bytes that can be transferred with the service.
DDLM_SET_PARAMETER_CONFIRM
Parameter Data Type Value Description
Reserved1 INT 0 Reserved
Reserved2 INT 0 Reserved
Answer SINT 74 Answer DDLM_Set_Parameter
Failure SINT e Error, Status (see following section)
Reserved3 INT 0 Reserved
DeviceAdr SINT 0..125 Slave Address