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Entry type: FAQ Entry ID: 24286789, Entry date: 05/16/2017

Which front doors for S7-300 modules can you use in particular when using a 40-pin front connector?

  • Entry
  • Associated product(s)
Use of raised front door for SIMATIC S7-300 modules

You can use different front connectors for the wiring of SIMATIC S7-300 modules.
An overview is available in the FAQ response in Entry ID 23060726

Fig. 1 shows the raised front door of the S7-300 and the documents included in the delivery package.
These include the prepunched wiring diagrams for the inside of the front door and the sheets for individual labelling of the front side.

Fig. 1

When wiring a 40-pin front connector of an S7-300 module, it might happen that there is not enough room to stow the cables. This might mean that you can no longer close the front door of the S7-300 module. This can be the case particularly if large cable cross-sections are being used (the American AWG cables in the USA, for example).

As a remedy, you can use the specially raised front door for the S7-300 modules.
In this way you can use cables with a cross-section of up to 1.3 mm²/16 AWG.

This raised door comes in three different versions:

  • Raised front door for Standard modules with article number: 6ES7 328-0AA00-7AA0
  • Raised front door for F modules with article number: 6ES7 328-7AA10-0AA0

  • Raised front door for Compact CPUs with article number: 6ES7 328-7AA20-0AA0

Further information about the raised front doors is available in the entries below:

We list the following below for raised front doors:

  • Suitable S7-300 modules
  • Picture and dimensioned drawing for the raised front door of the S7-300

Suitable S7-300 modules

Standard modules

Article number

SM321, 32DE, DC24V 6ES7 321-1BL00-0AA0
SM321, 16DE, AC/DC 24-48V,1ERWURZEL. 6ES7 321-1CH00-0AA0
SM321, 32DE, AC120V 6ES7 321-1EL00-0AA0
SM321, 8DE, AC120/230V, 1ERWURZEL. 6ES7 321-1FF10-0AA0
SM321, 16DE, DC24V, DIAGNOSTICS 6ES7 321-7TH00-0AB0
SM322, 32DA DC24V, 0.5A 6ES7 322-1BL00-0AA0
SM322, 8DA, DC24V/ 5A OD.AC 230V, 5A 6ES7 322-1HF10-0AA0
SM322, 8DA, AC120/230V, 2A 6ES7 322-5FF00-0AB0
SM322, 16DA, AC/DC24-48V, 2A 6ES7 322-5GH00-0AB0
SM322, 8DA RELAIS, DC24V, AC120-230V, 5A 6ES7 322-5HF00-0AB0
SM322, 16DA, DC24V, 0.5A 6ES7 322-8BH01-0AB0
SM323, 16DE/DA, DC24V, 0.5A 6ES7 323-1BL00-0AA0
SM331, 8AE, 13BIT 6ES7 331-1KF0.-0AB0
SM331,8AE,+/-5/10V,1-5V,+/-20MA,0/4-20MA 6ES7 331-7NF10-0AB0
SM331, 8AE, RESIST., PT100/200/1000, .. 6ES7 331-7PF01-0AB0
SM331, 8AE, 16BIT, THERMOCOUPLES 6ES7 331-7PF11-0AB0
SM332, 8AA, U/I, 11/12BIT 6ES7 332-5HF00-0AB0

F modules

Article number

SM326, 10DA, DC24V, 2A, FAIL-SAFE 6ES7 326-2BF01-0AB0
SM326, 10DA, DC24V/2A PP, FAIL-SAFE 6ES7 326-2BF10-0AB0
SM326, 8DA, DC24V/2A PM FAIL-SAFE 6ES7 326-2BF41-0AB0
SM326 24DE, DC24V, FAIL-SAFE 6ES7 326-1BK02-0AB0
SM326, 8DE, DC24V, NAMUR, FAIL-SAFE 6ES7 326-1RF00-0AB0
SM336, 6AE, 14 BIT, FAIL-SAFE 6ES7 336-1HE00-0AB0

Compact CPUs

Article number

CPU312C, 10DE/6DA, 64 KB6ES7 312-5BF04-0AB0
CPU313C, 24DE/16DA/5AE/2AA, 128 KB6ES7 313-5BG04-0AB0
CPU313C-2 PTP, 16DE/16DA, 128 KB6ES7 313-6BG04-0AB0
CPU313C-2 DP, 16DE/16DA, 128 KB6ES7 313-6CG04-0AB0
CPU314C-2PTP, 24DE/16DA/5AE/2AA, 192 KB6ES7 314-6BH04-0AB0
CPU314C-2DP, 24DE/16DA/5AE/2AA, 192 KB
6ES7 314-6CH04-0AB0
CPU314C-2PN/DP, 24DE/16DA/4AE/2AA, 192KB6ES7 314-6EH04-0AB0

Picture of the raised front door of the S7-300

Fig. 2

Dimensioned drawing for the raised front door of theS7-300

Fig. 3

Additional Keywords
Module wiring, Door, Sticking, Squashed, Signal module, Hardware wiring, Cable connection, Cables

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