MVI46-PDPS ♦ SLC Platform
Reference
Profibus DP Slave Communication Module
User Manual
ProSoft Technology, Inc.
Page 48 of 53
PROFIBUS Status Register [0]: Word 137
SPC3 ASIC slave status information provided to the master
Bit 0
Offline/Passive-Idle
Offline-/Passive-Idle state
0 = SPC3 is in offline
1 = SPC3 in passive idle
Bit 1
FDL_IND_ST (Fieldbus Data link Layer)
FDL indication is temporarily buffered.
0 = No FDL indication is temporarily buffered.
1 = FDL indication is temporarily buffered.
Bit 2
Diag_Flag
Status diagnostics buffer
0 = The DP master fetches the diagnostics buffer.
1 = The DP master has not yet fetched the diagnostics buffer.
Bit 3
RAM Access Violation
Memory access > 1.5kByte
0 = No address violation
1 = For addresses > 1536 bytes, 1024 is subtracted from the current address,
and there is access to this new address.
Bits 4,5 DP-State
DP-State Machine state
00 = 'Wait_Prm' state
01 = 'Wait_Cfg' state
10 = 'DATA_EX' state
11 = Not possible
Bits 6,7 WD-State
Watchdog-State-Machine state
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.