Siemens CPU 31 Series Technical Data Manual page 12

Table of contents
Tables
Table 1 Application area covered by this manual ...................................................................................... iii
Table 1-1 Ambient influence on the automation system (AS).................................................................... 1-1
Table 1-2 Galvanic isolation ....................................................................................................................... 1-1
Table 1-3 Communication between sensors/actuators and the PLC......................................................... 1-2
Table 1-4 The use of local and distributed I/O ........................................................................................... 1-2
Table 1-5 Configuration consisting of the Central Unit (CU) and Expansion Modules (EMs).................... 1-2
Table 1-6 CPU performance ...................................................................................................................... 1-3
Table 1-7 Communication .......................................................................................................................... 1-3
Table 1-8 Software ..................................................................................................................................... 1-3
Table 1-9 Supplementary features ............................................................................................................. 1-4
Table 2-1 Mode selector switch settings .................................................................................................... 2-3
Table 2-2 Differences of the CPUs 31xC ................................................................................................... 2-4
Table 2-3 Mode selector switch settings .................................................................................................... 2-6
Table 2-4 Mode selector switch settings .................................................................................................... 2-8
Table 2-5 Mode selector switch settings .................................................................................................. 2-10
Table 2-6 Mode selector switch settings .................................................................................................. 2-12
Table 2-7 General status and error displays of the CPU 31x .................................................................. 2-13
Table 2-8 Bus error displays of CPU 31x................................................................................................. 2-13
Table 3-1 Operating modes for CPUs with two DP interfaces ................................................................... 3-2
Table 3-2 Communication services of the CPUs ....................................................................................... 3-6
Table 3-3 Client and server in S7 communication, using connections with unilateral /
bilateral configuration ................................................................................................................. 3-9
Table 3-4 GD resources of the CPUs....................................................................................................... 3-10
Table 3-5 Number of routing connections for DP CPUs .......................................................................... 3-13
Table 3-6 New System and Standard Functions/System and Standard Functions to be Replaced........ 3-20
Table 3-7 System and Standard Functions in PROFIBUS DP that must be Implemented with
Different Functions in PROFINET IO ....................................................................................... 3-21
Table 3-8 OBs in PROFINET IO and PROFIBUS DP.............................................................................. 3-22
Table 3-9 Comparison of the System Status Lists of PROFINET IO and PROFIBUS DP ...................... 3-23
Table 3-10 Distribution of connections ....................................................................................................... 3-30
Table 3-11 Availability of connection resources......................................................................................... 3-31
Table 3-12 Number of routing connection resources (for DP/PN CPUs)................................................... 3-32
Table 3-13 Interrupt blocks with DPV1 functionality................................................................................... 3-34
Table 3-14 System function blocks with DPV1 functionality ...................................................................... 3-34
Table 4-1 Retentivity of the RAM ............................................................................................................... 4-2
Table 4-2 Retentivity behavior of memory objects (applies to all CPUs with DP/MPI-SS) ........................ 4-3
Table 4-3 Retentive behavior of DBs for CPUs with firmware >= V2.1.0................................................... 4-4
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CPU 31xC and CPU 31x, Technical Data
Manual, 01/2006 Edition, A5E00105475-06