PROFIBUS Interface Center
SPC3
Page 4 V1.3 SPC3 Hardware Description
2003/04 Copyright (C) Siemens AG 2003. All rights reserved.
Directory
1 INTRODUCTION 7
2 FUNCTION OVERVIEW 8
3 PIN DESCRIPTION 9
4 MEMORY ALLOCATION 11
4.1
Memory Area Distribution in the SPC3 11
4.2
Processor Parameters (Latches/Register) 13
4.3
Organizational Parameters (RAM) 15
5 ASIC INTERFACE 17
5.1
Mode Register 17
5.1.1
Mode Register 0 17
5.1.2
Mode Register 1 (Mode-REG1, writable): 19
5.2
Status Register 20
5.3
Interrupt Controller 22
5.4
Watchdog Timer 25
5.4.1
Automatic Baud Rate Identification 25
5.4.2
Baud Rate Monitoring 25
5.4.3
Response Time Monitoring 25
6 PROFIBUS-DP INTERFACE 26
6.1
DP_Buffer Structure 26
6.2
Description of the DP Services 29
6.2.1
Set_Slave_Address (SAP55) 29
6.2.2
Set_Param (SAP61) 30
6.2.3
Check_Config (SAP62) 31
6.2.4
Slave_Diagnosis (SAP60) 32
6.2.5
Write_Read_Data / Data_Exchange (Default_SAP) 33
6.2.6
Global_Control (SAP58) 35
6.2.7
Read_Inputs (SAP56) 36
6.2.8
Read_Outputs (SAP57) 36
6.2.9
Get_Config (SAP59) 36
7 HARDWARE INTERFACE 37
7.1
Universal Processor Bus Interface 37
7.1.1
General Description 37
7.1.2
Bus Interface Unit (BIU) 37
7.1.3
Switching Diagram Principles 39
7.1.4
Application with the 80 C 32 41
7.1.5
Application with th 80 C 165 42