SPC3 PROFIBUS Interface Center
SPC3 Hardware Description V1.3 Page 13
Copyright (C) Siemens AG 2003 All rights reserved. 2003/04
4.2 Processor Parameters (Latches/Register)
These cells can be either read only or written only. SPC3 carries out “address swapping” for an access to
the address area 00H - 07H (word register) in the Motorola mode. That is, the SPC3 exchanges
address bit 0 (generated from an even address, one uneven, and vice-versa). The following sections more
clearly explain the significance of the individual registers.
Address
Intel / Motorla
Name Bit
No.
Significance (Read Access!)
00H 01H Int-Req-Reg
7..0
Interrupt Controller Register
01H 00H Int-Req-Reg
15..8
02H 03H Int—Reg
7..0
03H 02H Int—Reg
15..8
04H 05H Status-Reg
7..0
Status Register
05H 04H Status-Reg
15..8
06H 07H Reserved
07H 06H
08H DIN_Buffer_SM
7..0
Buffer assignment of the
DP_Din_Buffer_State_Machine
09H New_DIN_Buffer_Cmd
1..0
The user makes a new DP Din buffer available in
the N state.
0AH DOUT_Buffer_SM
7..0
Buffer assignment of the
DP_Dout_Puffer_State_Machine
0BH Next_DOUT_Buffer_Cmd
1..0
The user fetches the last DP Dout-Buffer from the N
state.
0CH DIAG_Buffer_SM
3..0
Buffer assignment for the
DP_Diag_Puffer_State_Machine
0DH New_DIAG_Puffer_Cmd
1..0
The user makes a new DP Diag Buffer available to
the SPC3.
0EH User_Prm_Data_OK
1..0
The user positively acknowledges the user
parameter setting data of a Set_Param-Telegram.
0FH UserPrmDataNOK
1..0
The user negatively acknowledges the user
parameter setting data of a Set_Param-Telegram.
10H User_Cfg_Data_OK
1..0
The user positively acknowledges the configuration
data of a Check_Config-Telegram.
11H User_Cfg_Data_NOK 1..0
The user negatively acknowledges the configuration
data of a Check_Config-Telegram.
12H Reserved
13H
14H SSA_Bufferfreecmd The user has fetched the data from the SSA buffer
and enables the buffer again.
15H Reserved
Figure 4.2: Assignment of the Internal Parameter Latches for READ
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