Siemens SIMATIC S7-400H System Manual page 9

Tables
Table 5-1 LEDs on the CPUs.......................................................................................................................41
Table 5-2 Mode selector switch settings ......................................................................................................49
Table 5-3 Levels of protection of a CPU ......................................................................................................50
Table 5-4 Types of memory card .................................................................................................................55
Table 7-1 41x CPUs, MPI/DP interface as PROFIBUS DP .........................................................................66
Table 7-2 Meaning of the "BUSF" LED of the 41x CPU operating as DP master .......................................69
Table 7-3 Reading out the diagnostics information with STEP 7.................................................................69
Table 7-4 Event detection of the CPU 41xH as a DP master ......................................................................71
Table 8-1 Overview of S7-400H system states............................................................................................82
Table 8-2 Causes of error leading to redundancy loss ................................................................................86
Table 8-3 Reaction to errors during the self-test..........................................................................................89
Table 8-4 Reaction to a recurring comparison error ....................................................................................90
Table 8-5 Reaction to checksum errors .......................................................................................................90
Table 8-6 Hardware fault with one-sided call of OB 121, checksum error, second occurrence ..................91
Table 9-1 Properties of link-up and update functions ..................................................................................93
Table 9-2 Conditions for link-up and update ................................................................................................94
Table 9-3 Typical values for the user program part ...................................................................................115
Table 10-1 Interfaces for the use of single-channel switched I/O ................................................................123
Table 10-2 Signal modules for channel-oriented redundancy .....................................................................133
Table 10-3 Signal modules for channel-oriented redundancy .....................................................................134
Table 10-4 Interconnecting digital output modules with/without diodes.......................................................141
Table 10-5 Analog input modules and encoders .........................................................................................146
Table 10-6 Assignment of the status byte....................................................................................................149
Table 10-7 Assignment of status bytes ........................................................................................................150
Table 10-8 Example of redundant I/O, OB 1 part .......................................................................................154
Table 10-9 Example of redundant I/O, OB 122 part ....................................................................................155
Table 10-10 For the monitoring times I/O used redundantly..........................................................................155
Table 14-1 Modifiable CPU parameters.......................................................................................................234
Table 15-1 Accessory fiber-optic cable ........................................................................................................254
Table 15-2 Specification of fiber-optic cables for indoor applications..........................................................255
Table 15-3 Specification of fiber-optic cables for outdoor applications........................................................256
Table 16-1 Cyclic program execution...........................................................................................................260
Table 16-2 Factors influencing cycle time....................................................................................................261
Table 16-3 Allocation of the process image transfer time, CPU 412-3H .....................................................262
Table 16-4 Portion of the process image transfer time, CPU 414-4H.........................................................263
S7-400H
System Manual, 09/2007, A5E00267695-03
Table of contents
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