Profichip VPC3+S - PROFIBUS DP Extensions; Set_(Ext_)Prm (SAP 53; SAP 61)

PROFIBUS DP Extensions 7
VPC3+S User Manual
Revision 1.04
59
Copyright © profichip GmbH, 2012
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.
Byte
Bit Position
Designation
7
6
5
4
3
2
1
0
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_ Specific_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 supports 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+S 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.