ProSoft Technology MVI56-PDPMV1 - Manual (Page 103)

MVI56-PDPMV1 ♦ ControlLogix Platform Configuring the MVI56-PDPMV1 Module
PROFIBUS DPV1 Master User Manual
ProSoft Technology, Inc. Page 103 of 255
March 22, 2011
Parameter Data Structure
SPC3 evaluates the first seven data bytes (without user prm data), or the first
eight data bytes (with user prm data). The first seven bytes are specified
according to the standard. The eighth byte is used for SPC3-specific
communications. The additional bytes are available to the application.
Byte Bit Position Designation
7 6 5 4 3 2 1 0
0 Lock
Reg Unio
Req Sync
Req Free
Req WD on Res Res Res Station status
1 WD_Fact_1
2 WD_Fact_2
3 MinTSDR
4 Ident_Number_High
5 Ident_Number_Low
6 Group_Ident
7 Spec_User_Prm_Byte
8 to 243 User_Prm_Data
Byte 7 Spec_User_Prm_Byte
Bit Name Significance Default State
0 Dis_Startbit The start bit monitoring in the receiver
is switched off with this bit Dis_Startbit = 1,
Start bit monitoring is switched off.
1 Dis_Stopbit Stop bit monitoring in the receiver is
switched off with this bit Dis_Stopbit = 0
Stop bit monitoring is not switched off.
2 WD_Base This bit specifies the time base used to
clock the watchdog.
WD_Base = 0: time base 10 ms
WD_Base = 1: time base 1 ms WD_Base = 0
The time base is 10 ms.
3 to 4 Res To be parameterized with 0 0
5 Publisher_Enable DXB-publisher-functionality of the
SPC3 is activated with this bit Publisher_Enable = 0, DXB-request-
telegrams are ignored;
Publisher_Enable = 1, DXB-request-
telegrams are processed
6 to 7 Res To be parameterized with 0 0