Profichip VPC3+C - PROFIBUS DP Extensions; Set Parameter (Extended)

PROFIBUS DP Extensions 7
7 PROFIBUS DP Extensions
7.1 Set_(Ext_)Prm (SAP 53 / SAP 61)
The PROFIBUS DP extensions require three bytes to implement the new
parameterization function. The bits of the Spec_User_Prm_Byte are
included.
Bit Position
Byte
7 6 5 4 3 2 1 0
Designation
0
:
6
7
DPV1_ Enable Fail_Safe Publisher_ Enable Reserved Reserved WD_Base Dis_Stop_ Control Dis_Start_ Control
DPV1_Status_1
8
Enable_ Pull_Plug_Alarm Enable_ Process_Alarm Enable_ Diagnostic_Alarm Enable
_
Manufacturer_ S
p
ecific Alarm
Enable_ Status_Alarm Enable_ Update_Alarm
0
Chk_Cfg_Mode
DPV1_Status_2
9
PrmCmd
0 0
IsoM_Req Prm_ Structure
Alarm_Mode DPV1_Status_3
10
:
243
User_Prm_Data
Figure 7-1: Set_Prm with DPV1_Status bytes
If the extensions are used, the bit Spec_Clear_Mode in Mode
Register 0 serves as Fail_Safe_required. Therefore it is used for a
comparison with the bit Fail_Safe in parameter telegram. Whether the
DP-Master support the Fail_Safe mode or not is indicated by the
telegram bit. If the DP-Slave requires Fail_Safe but the DP-Master
doesn’t the Prm_Fault bit is set.
If the VPC3+C should be used for DXB, IsoM or redundancy mode, the
parameterization data must be packed in a Structured_Prm_Data block to
distinguish between the User_Prm_Data. The bit Prm_Structure indicates
this.
If redundancy should be supported, the PrmCmd_Supported bit in Mode
Register 0 must be set.
VPC3+C User Manual
Revision 1.03 53
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