Siemens Simatic S7-300 CPU 31xC Series User Manual

Table of contents
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
ix
8.4.5.1 Connecting a PG/PC to the integrated PROFINET interface of the CPU 31x-2 PN/DP ......... 8-13
8.4.5.2 Connecting the PG to a node................................................................................................... 8-14
8.4.5.3 Connecting the PG to several nodes ....................................................................................... 8-15
8.4.5.4 Using the PG for commissioning or maintenance.................................................................... 8-16
8.4.5.5 Connecting a PG to ungrounded MPI nodes (not CPU 31xC) ................................................ 8-17
8.4.6 Starting SIMATIC Manager...................................................................................................... 8-18
8.4.7 Monitoring and modifying I/Os ................................................................................................. 8-19
8.5 Commissioning PROFIBUS DP............................................................................................... 8-23
8.5.1 Commissioning PROFIBUS DP............................................................................................... 8-23
8.5.2 Commissioning the CPU as DP master................................................................................... 8-24
8.5.3 Commissioning the CPU as DP Slave..................................................................................... 8-27
8.5.4 Direct data exchange ............................................................................................................... 8-33
8.6 Commissioning PROFINET IO ................................................................................................ 8-34
8.6.1 Requirements........................................................................................................................... 8-34
8.6.2 Configuring and commissioning the PROFINET IO system .................................................... 8-35
9 Maintenance ........................................................................................................................................... 9-1
9.1 Overview .................................................................................................................................... 9-1
9.2 Backup of firmware to Micro Memory Card (MMC) ................................................................... 9-1
9.3 Updating the firmware from MMC..............................................................................................9-3
9.4 Online (via networks) update of CPU FW V2.2.0 or higher. ...................................................... 9-4
9.5 Backup of project data to a Micro Memory Card (MMC) ........................................................... 9-5
9.6 Module installation / removal ..................................................................................................... 9-6
9.7 Digital output module AC 120/230 V: Changing fuses ............................................................ 9-11
10 Debugging functions, diagnostics and troubleshooting ......................................................................... 10-1
10.1 Overview .................................................................................................................................. 10-1
10.2 Overview: Debugging functions ............................................................................................... 10-1
10.3 Overview: Diagnostics ............................................................................................................. 10-4
10.4 Diagnostic Options with STEP 7 .............................................................................................. 10-7
10.5 Network Infrastructure Diagnostics (SNMP) ............................................................................ 10-8
10.6 Diagnostics using status and error LEDs................................................................................. 10-9
10.6.1 Introduction .............................................................................................................................. 10-9
10.6.2 Status and error displays of all CPUs .................................................................................... 10-10
10.6.3 Evaluating the SF LED in case of software errors ................................................................. 10-11
10.6.4 Evaluating the SF LED in case of hardware errors................................................................ 10-13
10.6.5 Status and Error Indicators: CPUs with DP Interface ............................................................ 10-14
10.6.6 Status displays: CPUs with PN Interface............................................................................... 10-16
10.7 Diagnostics of DP CPUs ........................................................................................................ 10-18
10.7.1 Diagnostics of DP CPUs operating as DP Master ................................................................. 10-18
10.7.2 Reading out slave diagnostic data......................................................................................... 10-21
10.7.3 Interrupts on the DP Master................................................................................................... 10-25
10.7.4 Structure of slave diagnostic data when the CPU is operated as Intelligent Slave ............... 10-27
10.8 Diagnostics of PN CPUs ........................................................................................................ 10-34

Siemens Simatic S7-300 CPU 31xC Series Specifications

General

Series	S7-300 CPU 31xC
Power Supply	24 V DC
Communication Interfaces	MPI, PROFIBUS DP
Programming Languages	LAD, STL, FBD, SCL
Operating Temperature	0°C to +60°C
Memory	48 KB - 512 KB
Dimensions	40 x 125 x 130 mm (varies by model)