Siemens SIMATIC Manual page 68

Digital modules
3.6 Digital input module SM 321; DI 64 x DC 24 V, sinking/sourcing; (6ES7321-1BP00-0AA0)
Using the module in S7-300 and ET 200M
If the station is configured with STEP 7, you can use the SM 321 digital input module with all
CPUs in the following tables. Startup cannot be performed if no configuration is loaded.
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C-CPUs (compact CPUs)
CPU 312C
CPU 313C
CPU 313C-2 DP
CPU313C-2 PtP
CPU 314C-2 DP
CPU 314C-2 PtP
CPU314C-2 PN/DP
M-CPUs
CPU 312
CPU 314
CPU 315-2 DP
CPU 316-2 DP
CPU 317-2 DP
CPU 315-2 PN/DP
CPU 317-2 PN/DP
CPU 319-3 PN/DP
Order number
6ES7312-5BD0x-0AB0
6ES7312-5BE03-0AB0
6ES7312-5BF04-0AB0
6ES7313-5BE0x-0AB0
6ES7313-5BF03-0AB0
6ES7313-5BG04-0AB0
6ES7313-6CE0x-0AB0
6ES7313-6CF03-0AB0
6ES7313-6CG04-0AB0
6ES7313-6BE0x-0AB0
6ES7313-6BF03-0AB0
6ES7313-6BG04-0AB0
6ES7314-6CF0x-0AB0
6ES7314-6CG03-0AB0
6ES7314-6CH04-0AB0
6ES7314-6BF0x--0AB0
6ES7314-6BG03--0AB0
6ES7314-6BH04-0AB0
6ES7314-6EH04-0AB0
Order number
6ES7312-1AD1x-0AB0
6ES7312-1AE13-0AB0
6ES7312-1AE14-0AB0
6ES7314-1AF1x-0AB0
6ES7314-1AG13-0AB0
6ES7314-1AG14-0AB0
6ES7315-2AF0x-0AB0
6ES7315-2AG10-0AB0
6ES7315-2AH14-0AB0
6ES7316-2AG00-0AB0
6ES7317-2AJ10-0AB0
6ES7317-2AK14-0AB0
6ES7315-2EG10-0AB0
6ES7315-2EH13-0AB0
6ES7315-2EH14-0AB0
6ES7317-2EJ10-0AB0
6ES7317-2EK13-0AB0
6ES7317-2EK14-0AB0
6ES7318-3EL00-0AB0
6ES7318-3EL01-0AB0
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ