Siemens S7-300 - 5.2 Wiring Fail-Safe Signal Modules

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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
A5E00203919-01
5-19
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In an S7-300 configuration with grounded reference potential occurring interference
current is dissipated to the ground conductor/ to ground.
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Your CPU already is supplied complete with a grounded reference potential,
so if you wish to install an S7-300 with grounded reference potential, then you do
not need to make any changes to your CPU.
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This connection diagram applies to the following CPUs
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CPU 313 6ES7 313-1AD03-0AB0 01
CPU 314 6ES7 314-1AE04-0AB0
6ES7 314-1AE84-0AB0
01
CPU 314 IFM 6ES7 314-5AE03-0AB0 01
CPU 314 IFM 6ES7 314-5AE83-0AB0 01
CPU 315 6ES7 315-1AF03-0AB0 01
CPU 315-2 DP 6ES7 315-2AF03-0AB0
6ES7 315-2AF83-0AB0
01
CPU 316-2 DP 6ES7 316-2AG00-0AB0 01
CPU 318-2 DP 6ES7 318-2AJ00-0AB0 03