Siemens SPC3 Hardware Description page 25

Bit 0 MAC_Reset
After it processes the current request, the SPC3 has arrived at the offline state (through
setting the 'Go_Offline bit' or through a RAM access violation).
Bit 1 Go/Leave_DATA_EX
The DP_SM has entered or exited the 'DATA_EX' state.
Bit 2 Baudrate_Detect
The SPC3 has exited the 'Baud_Search state' and found a baud rate.
Bit 3 WD_DP_Control_Timeout
The watchdog timer has run out in the 'DP_Control' WD state.
Bit 4 User_Timer_Clock
The time base for the User_Timer_Clocks has run out (1/10ms).
Bit 5 Res
For additional functions
Bit 6 Res
For additional functions
Bit 7 Res
For additional functions
Bit 8 New_GC_Command
The SPC3 has received a 'Global_Control telegram' with a changed 'GC_Command-
Byte,' and this byte is stored in the 'R_GC_Command' RAM cell.
Bit 9 New_SSA_Data
The SPC3 has received a 'Set_Slave_Address telegram' and made the data available
in the SSA buffer.
Bit 10 New_Cfg_Data
The SPC3 has received a 'Check_Cfg telegram' and made the data available in the Cfg
buffer.
Bit 11 New_Prm_Data
The SPC3 has received a 'Set_Param telegram' and made the data available in the
Prm buffer.
Bit 12 Diag_Puffer_Changed
Due to the request made by 'New_Diag_Cmd,' SPC3 exchanged the diagnostics buffer
and again made the old buffer available to the user.
Bit 13 DX_OUT
The SPC3 has received a 'Write_Read_Data telegram' and made the new output data
available in the N buffer. For a 'Power_On' or for a 'Leave_Master,' the SPC3 deletes
the N buffer and also generates this interrupt.
Bit 14 Res
For additional functions
Bit 15 Res
For additional functions
Figure 5.4: Interrupt Request Register, IRR Bit 15..0 (writable and readable)
SPC3 Hardware Description
Copyright (C) Siemens AG 2003 All rights reserved.
SPC3
V1.3
PROFIBUS Interface Center
Page 23
2003/04