Siemens SPC3 - Manual (Page 6)

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