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Siemens 6AG1321-1FF10-7AA0 — Digital Input Modules

Siemens 6AG1321-1FF10-7AA0 SIPLUS SM 1221, 8 DI AC, -40…70°C

Name: 6AG1321-1FF10-7AA0
Brand: Siemens
SKU: 6AG1321-1FF10-7AA0
Availability: LimitedAvailability
Author: Broker Bao

MPN6AG1321-1FF10-7AA0

Siemens SIPLUS S7-1200 SM 1221, 8 digital inputs AC, 120/230 VAC, -40…70 °C, UL File E239877.

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Siemens 6AG1321-1FF10-7AA0 datasheet (PDF)

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6AG1321-1FF10-7AA0 — Inputs
Parameter	Value
Number of digital inputs	8
Max. inputs, up to 60 °C	8; 8 @ > 60 °C
2-wire sensor support	Yes

6AG1321-1FF10-7AA0 — Electrical
Parameter	Value
Input voltage at signal "1"	79 to 264V
Input voltage type (AC/DC)	AC
Input voltage at signal "0"	0 to 40V
Input current at signal "1" (typ.)	7.5 mA; (120 V); 17.3 mA (230 V)
Power loss (typ.)	4.9 W
Current consumption from backplane bus (5 V DC), max.	100 mA
Permissible quiescent current, 2-wire sensor, max.	2 mA
Cable length, unshielded, max.	600 m
Cable length, shielded, max.	1 000 m

6AG1321-1FF10-7AA0 — Timing
Parameter	Value
Input delay 0 to 1, max.	25 ms
Input delay 1 to 0, max.	25 ms
Input delay, parameterizable values	No

6AG1321-1FF10-7AA0 — Diagnostics & Isolation
Parameter	Value
Diagnostics function	No
Diagnostic alarm	No
Hardware interrupt support	No
Isolation between channels	Yes
Isolation between channels and backplane bus	Yes; Optocoupler
Isolation test voltage	1 500 V AC
Channels per isolated group	1
Status indicator per channel (green)	Yes

6AG1321-1FF10-7AA0 — Mechanical
Parameter	Value
Depth	120 mm
Height	125 mm
Width	40 mm

6AG1321-1FF10-7AA0 — Specifications
Parameter	Value
Rated value (AC)	120 V; 120/230 V AC (47 ... 63 Hz)

Product details

What this module is

The Siemens 6AG1321-1FF10-7AA0 is a digital input module with 8 AC inputs rated for 120/230 VAC. It operates from -40 to 70 °C, drawing 4.9 W from the backplane, and needs a 40-pin front connector.

The module operates -40 to 70 °C with input thresholds 0-40 V for signal '0' and 79-264 V for signal '1', transition time max 25 ms, and each input isolated per group of 1 via optocoupler.

This module expands on the DIN rail via a 40-pin connector; the controller auto-assigns I/O address. At 40 mm wide, it occupies one slot with a green LED per channel for loop check.