Product Description
Key Features
- Exact product identity: Siemens SIMATIC S7-300 SM 321 digital input module, order number 6ES7321-7BH01-0AB0; spare part.
- Digital input capacity: 16 digital inputs with an input characteristic curve in accordance with IEC 61131, type 2.
- 24 V DC input supply: Rated input voltage: 24 V DC; permissible range: -30 to +5 V for signal "0" and 13 to 30V for signal "1".
- Diagnostics and interrupts: Has parameterizable diagnostics, diagnostic alarms, hardware interrupts, readable diagnostic information, and wire-break detection to I< 1 mA.
- Connection and installation: Requires a 20-pin front connector. Dimensions: 40 mm width, 125 mm height, and 120 mm depth.
- Lifecycle status: Product cancellation.
Technical Summary
| Product function | Isochronous mode: Yes |
|---|---|
| Digital inputs | 16 |
| Rated input voltage | 24 V DC |
| Input voltage, signal "0" | -30 to +5 V |
| Input voltage, signal "1" | 13 to 30V |
| Input delay | Parameterizable: 0.1 / 0.5 / 3 / 15 / 20 ms |
| Encoder connection | 2-wire sensor: Yes |
| Diagnostics | Diagnostics function, diagnostic alarm and hardware interrupt: Yes; Parameterizable |
| Front connector | 20-pin |
| Product lifecycle | Product cancellation |
Frequently Asked Questions
What order number should be confirmed for this Siemens module?
Confirm the complete order number 6ES7321-7BH01-0AB0 on the nameplate.
What input configuration does 6ES7321-7BH01-0AB0 have?
It has 16 isolated digital inputs with a rated input voltage of 24 V DC and a 20-pin front connector.
Does the module support diagnostics and hardware interrupts?
Yes. Diagnostics, diagnostic alarms, and hardware interrupts are parameterizable; diagnostic information is readable.
What cable lengths are supported?
The maximum cable length is 1 000 m for shielded cable and 600 m for unshielded cable.
What lifecycle information applies to this configuration?
It has the lifecycle status Product cancellation.
