CPU-ESPS3-X1
Base CPU
Best when Ethernet or Wi-Fi already reaches the control panel.
Connectivity: Wi-Fi, BLE, Ethernet, RS-485
Cellular: None
Cellular: None
NORVI X Modular Controller Platform
NORVI X Configuration & Comparison Tool
Compare NORVI X CPU modules, select expansion I/O, check documented address and GPIO limits, and build a validated controller configuration for your application.
Modular architecture
CPU + plug-in I/O modules
CPU + plug-in I/O modules
Choose the CPU first
Start with the network available at the installation. All three CPUs share the same modular I/O platform; cellular capability is the main model-selection difference.
How will this controller connect?
CPU-ESPS3-X2
LTE Cat 1
Best for remote IoT installations requiring built-in cellular connectivity and 2G
fallback.
Modem: SIMCOM A7672X
Cellular: LTE Cat 1 + 2G
Cellular: LTE Cat 1 + 2G
CPU-ESPS3-X3
LTE Cat 4
Best when a remote installation needs higher-speed user-grade 4G connectivity.
Modem: Quectel EC25
Cellular: LTE Cat 4
Cellular: LTE Cat 4
ESP32-S3N16R2 standard
CPU
16 MB Flash2 MB PSRAM
2.0-inch TFT240 × 320 touch
display
Ethernet +
RS-485Built into every CPU
Wi-Fi + BLE2.4 GHz
wireless
DS3231 RTCHardware real-time
clock
microSDLocal storage
support
24 V DCIndustrial
supply
DIN Rail37.5 mm
CPU width
IP20Panel
installation
−10 to +85
°CCPU datasheet range
Up to 200 I/OVia
expansion modules
X1 vs X2 vs X3
The three CPU variants share the same ESP32-S3 platform. The biggest selection difference is built-in cellular hardware.
Scroll horizontally on smaller screens. Rows highlighted in amber are the specifications that
differ.
| Specification | CPU-ESPS3-X1 | CPU-ESPS3-X2 | CPU-ESPS3-X3 |
|---|---|---|---|
| Processor | ESP32-S3-WROOM-1U-N16R2 | ESP32-S3-WROOM-1U-N16R2 | ESP32-S3-WROOM-1U-N16R2 |
| Flash Memory | 16 MB | 16 MB | 16 MB |
| PSRAM | 2 MB | 2 MB | 2 MB |
| Wi-Fi | Built-in 2.4 GHz | Built-in 2.4 GHz | Built-in 2.4 GHz |
| Bluetooth | BLE | BLE | BLE |
| Ethernet | Built-in | Built-in | Built-in |
| RS-485 | Built-in | Built-in | Built-in |
| Cellular | None | LTE Cat 1 + 2G | LTE Cat 4 |
| Cellular Modem | N/A | SIMCOM A7672X | Quectel EC25 |
| Best Fit | Ethernet / Wi-Fi connected panels | Remote cellular installations where Cat 1 is suitable | Remote installations requiring Cat 4 LTE |
Find the expansion module you need
Filter by I/O type or search by signal, channel count, interface, or module name.
| Module | Category | Channels / Function | Best For | Key Spec | Interface | Address / GPIO | Actions |
|---|
Build your NORVI X configuration
Select a CPU, choose the memory variant, and add expansion modules. The tool checks documented I²C group limits, direct-GPIO conflicts, N16R8/X-Q4 compatibility, total I/O count, and approximate DIN-rail space.
1. Select CPU
Choose based mainly on the network available at the installation.
2. Select CPU memory variant
The customized N16R8 version does not support X-Q4 according to the CPU datasheets.
3. Add expansion modules
Use + / − to build the required I/O mix. Hardware, compatibility and shared-address limits are
enforced automatically, so conflicting modules cannot be selected together.
4. Live I²C / GPIO resource map
Modules in a shared family consume one selectable address each. Direct-GPIO modules use fixed
CPU resources.
NORVI X module mixing
Most expansion cards share the CPU's I²C bus. The available address space of each expander family determines how many cards from that family can be used together.
You can mix module types across different address groups. Limits apply within each group, so the key question is not only how many modules you need, but which I²C expander or direct GPIO resources they use.
PCA9538
4
max modules in this group
PCA9555
8
max modules in this group
ADS1115
4
max modules in this group
STM32 · AQ4
16
max X-AQ4 modules
STM32 · RTD4
16
max X-RTD4 modules
Direct GPIO modules
X-DI4, X-Q4 and X-UARTIO do not behave like the address-selectable I²C groups above. X-DI4 and X-UARTIO use the same expansion I/O lines, so they conflict with each other.
| Combination | Supported | Reason |
|---|---|---|
| X-DI4 + X-UARTIO | No | Both use IO5, IO6, IO7 and IO10. |
| X-DI4 + X-Q4 | Yes | They use different expansion I/O groups. |
| X-Q4 + X-UARTIO | Yes | They use different expansion I/O groups. |
| X-DI4 + X-Q4 + X-UARTIO | No | X-DI4 and X-UARTIO still conflict. |
RTD4: the current NORVI X-RTD4 address range used here is 0x30–0x3F. X-AQ4 uses the
separate 0x50–0x5F range.