
Reference MVI46-PDPS
♦
SLC Platform
Profibus DP Slave Communication Module
ProSoft Technology, Inc.
Page 55 of 72
April 30, 2008
DP-State
DP-State Machine state
Bits
4,5
00 = 'Wait_Prm' state
01 = 'Wait_Cfg' state
10 = 'DATA_EX' state
11 = Not possible
WD-State
Watchdog-State-Machine state
Bits
6,7
00 = 'Baud_Search' state
01 = 'Baud_Control' state
10 = 'DP_Control' state
11 = Not possible
Further explanation of Status Register [0]: Word 9 Bit states
Bit 0
Offline/Passive-idle
0 = SPC3 exits offline and goes to passive-idle. The idle timer and Wd timer
go offline.
1= SPC3 exits offline and goes to passive-idle. The idle timer and Wd timer
are started.
Bit 4, 5
10 = Data Exchange State is Normal. The SPC3 has a correct configuration.
PROFIBUS Status Register [1]: Word 138
SPC3 ASIC slave status information provided to the master.
Baud rate:
The baud rates SPC3 found
Bits
0 to 3
0000 = 12 MBaud
0001 = 6 MBaud
0010 = 3 MBaud
0011 = 1.5 MBaud
0100 = 500 kBaud
0101 = 187.5 kBaud
0110 = 93.75 kBaud
0111 = 45.45 kBaud
1000 = 19.2 kBaud
1001 = 9.6 kBaud
Rest = Not possible
SPC3-Release:
Release no. for SPC3
Bits
4 to 7
0000 = Release 0
Rest = Not possible