Skip to main content
Log in
Siemens 6AG1321-1FH00-7AA0 — Digital Input Modules

Siemens 6AG1321-1FH00-7AA0 SIPLUS SM 1221 DI, 16 AC, -40..70

MPN6AG1321-1FH00-7AA0

Siemens SIPLUS SM 1221 digital input module, 16 AC inputs, 120/230 V AC, extended temperature -40 to 70 °C, order code 6AG1321-1FH00-7AA0.

$353.06Ref. price · indicative, final on quote
Siemens 6AG1321-1FH00-7AA0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6AG1321-1FH00-7AA0 — Inputs
ParameterValue
Number of digital inputs16
Max. inputs, up to 40 °C16
Max. inputs, up to 60 °C16; up to 70 °C
2-wire sensor supportYes
6AG1321-1FH00-7AA0 — Electrical
ParameterValue
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.)6.5 mA; (120 V, 60 Hz), 16 mA (230 V, 50 Hz)
Power loss (typ.)4.9 W
Current consumption from backplane bus (5 V DC), max.29 mA
Permissible quiescent current, 2-wire sensor, max.2 mA
Cable length, unshielded, max.600 m
Cable length, shielded, max.1 000 m
6AG1321-1FH00-7AA0 — Timing
ParameterValue
Input delay 0 to 1, min.25 ms
Input delay 0 to 1, max.25 ms
Input delay 1 to 0, max.25 ms
Input delay, parameterizable valuesNo
6AG1321-1FH00-7AA0 — Diagnostics & Isolation
ParameterValue
Diagnostics functionNo
Diagnostic alarmNo
Hardware interrupt supportNo
Isolation between channelsNo
Isolation between channels and backplane busYes; Optocoupler
Isolation test voltage4 000 V DC
Channels per isolated group4
Status indicator per channel (green)Yes
6AG1321-1FH00-7AA0 — Mechanical
ParameterValue
Depth120 mm
Height125 mm
Width40 mm
6AG1321-1FH00-7AA0 — Specifications
ParameterValue
Rated value (AC)230 V; 120/230 V AC (47 ... 63 Hz)

Product details

The 6AG1321-1FH00-7AA0: Input response time is symmetrical: 25 ms typical for both 0→1 and 1→0 transitions. The module draws 29 mA from the 5 V DC backplane bus plus approximately 6.5 mA per input at 120 V AC or 16 mA at 230 V AC.

Sourcing is straightforward: this is a stocked catalog item for major Siemens distributors. The module requires a 20-pin front connector (sold separately).

Installation Notes

Status indication: each channel has a green LED that illuminates when the input is in the "1" state. The module does not support hardware interrupts or diagnostic alarms, so fault detection must be handled in the CPU logic.

Frequently asked questions

What compliance certificates are available for this module?

The module carries UL (File E239877), CE, KC, EAC, and RCM approvals. RoHS and REACH documentation are standard for Siemens SIPLUS products.

What front connector does this module need?

It requires a 20-pin front connector (Siemens order code 6ES7921-1AB00-0AA0 for screw-type or 6ES7921-1BC00-0AA0 for spring-type).

MPN
6AG1321-1FH00-7AA0