Schneider Electric Symmetra PX 250/500 kVA Modbus register map
Also covers Symmetra PX 500
Modular three-phase UPS: status and alarm bits, battery, input, bypass, output and parallel-system measurements, subfeed currents and life time data
- Official
- 542 registers
- Revision 1 · 2026-10-18
- Identity: serial number
Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.
Communication
- Protocol
- Modbus TCP and RTUdefault
- Unit ID
- 1default
- TCP port
- 502default
- Serial
- 9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit defaults
- Byte / word order
- ABCD · bytes big-endian, words high first
- Addresses
- 0-based
Connection values are defaults: the device may be configured differently.
Map
- Registers
- 542 holding registers
- Groups
- 26
- Translation tables
- 6
- Revision
- 1 · 2026-10-18
- Added
- ()
- File
- maps/schneider-electric/symmetra-px-250-500.mbmap.json · 82 KB · history
- SHA-256
- 23598b0f2c307977be7919e4fb39db893b2df295be48bbce8f9f7e48652ec488
- Manufacturer
- se.com
Device identity
What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.
| Role | Register | Address | Type | Values |
|---|---|---|---|---|
| Serial number | UPS serial number | holding 4145 | string[6] |
Sources and notes
- Modbus Register Map: Symmetra PX 250/500 kVA · version 990-3936G all 18 pages; revision history up to firmware sypx646
Source: Schneider Electric / APC, Modbus Register Map: Symmetra PX 250/500 kVA, 990-3936G
- Register addresses are the absolute decimal addresses of the manual (Modicon 40001 is address 0). Function codes 3 and 4 read the same registers; Modbus RTU and Modbus TCP are supported.
- Status and alarm registers are bit words, bit 0 is the least significant bit and reserved bits are left out. Bits are atomic within one register only.
- Registers appear in the manual in groups: the columns of the printed table are offset by one line from the data point, and each value here was matched to its data point by name and unit.
- Registers added by newer firmware (the manual's revision history lists them up to sypx646) are included. The manual gives no registers 46145 to 46166 for the second frame.
- For the settings of the network card see the AP9635 User's Guide.
| Area | Address | Name | Type | Access | Unit | Scale | Description |
|---|---|---|---|---|---|---|---|
| HR | 0 | bool bit 0 | R | ||||
| HR | 0 | bool bit 1 | R | ||||
| HR | 0 | bool bit 2 | R | ||||
| HR | 0 | bool bit 3 | R | ||||
| HR | 0 | bool bit 4 | R | ||||
| HR | 0 | bool bit 7 | R | ||||
| HR | 0 | bool bit 8 | R | ||||
| HR | 0 | bool bit 9 | R | ||||
| HR | 0 | bool bit 10 | R | ||||
| HR | 0 | bool bit 11 | R | ||||
| HR | 0 | bool bit 12 | R | ||||
| HR | 0 | bool bit 13 | R | ||||
| HR | 0 | bool bit 14 | R | ||||
| HR | 0 | bool bit 15 | R | ||||
| HR | 2 | bool bit 0 | R | ||||
| HR | 2 | bool bit 1 | R | ||||
| HR | 2 | bool bit 2 | R | ||||
| HR | 2 | bool bit 3 | R | ||||
| HR | 2 | bool bit 4 | R | ||||
| HR | 2 | bool bit 5 | R | ||||
| HR | 2 | bool bit 6 | R | ||||
| HR | 2 | bool bit 7 | R | ||||
| HR | 2 | bool bit 8 | R | ||||
| HR | 2 | bool bit 9 | R | ||||
| HR | 2 | bool bit 10 | R | ||||
| HR | 2 | bool bit 11 | R | ||||
| HR | 2 | bool bit 12 | R | ||||
| HR | 2 | bool bit 13 | R | ||||
| HR | 2 | bool bit 15 | R | ||||
| HR | 3 | bool bit 0 | R | ||||
| HR | 3 | bool bit 1 | R | ||||
| HR | 3 | bool bit 2 | R | ||||
| HR | 3 | bool bit 3 | R | ||||
| HR | 3 | bool bit 4 | R | ||||
| HR | 3 | bool bit 5 | R | ||||
| HR | 3 | bool bit 6 | R | ||||
| HR | 3 | bool bit 7 | R | ||||
| HR | 3 | bool bit 8 | R | ||||
| HR | 3 | bool bit 9 | R | ||||
| HR | 3 | bool bit 10 | R | ||||
| HR | 3 | bool bit 11 | R | ||||
| HR | 3 | bool bit 12 | R | ||||
| HR | 3 | bool bit 13 | R | ||||
| HR | 3 | bool bit 14 | R | ||||
| HR | 3 | bool bit 15 | R | ||||
| HR | 4 | bool bit 0 | R | ||||
| HR | 4 | bool bit 1 | R | ||||
| HR | 4 | bool bit 2 | R | ||||
| HR | 4 | bool bit 3 | R | ||||
| HR | 4 | bool bit 4 | R | ||||
| HR | 4 | bool bit 5 | R | ||||
| HR | 4 | bool bit 6 | R | ||||
| HR | 4 | bool bit 7 | R | ||||
| HR | 4 | bool bit 8 | R | ||||
| HR | 4 | bool bit 9 | R | ||||
| HR | 4 | bool bit 10 | R | ||||
| HR | 4 | bool bit 11 | R | ||||
| HR | 4 | bool bit 12 | R | ||||
| HR | 4 | bool bit 13 | R | ||||
| HR | 5 | bool bit 0 | R | ||||
| HR | 5 | bool bit 1 | R | ||||
| HR | 5 | bool bit 2 | R | ||||
| HR | 5 | bool bit 3 | R | ||||
| HR | 5 | bool bit 5 | R | ||||
| HR | 5 | bool bit 6 | R | ||||
| HR | 5 | bool bit 7 | R | ||||
| HR | 5 | bool bit 8 | R | ||||
| HR | 5 | bool bit 10 | R | ||||
| HR | 5 | bool bit 11 | R | ||||
| HR | 5 | bool bit 12 | R | ||||
| HR | 5 | bool bit 13 | R | ||||
| HR | 5 | bool bit 14 | R | ||||
| HR | 6 | bool bit 0 | R | ||||
| HR | 6 | bool bit 1 | R | ||||
| HR | 6 | bool bit 2 | R | ||||
| HR | 6 | bool bit 4 | R | ||||
| HR | 6 | bool bit 5 | R | ||||
| HR | 6 | bool bit 6 | R | ||||
| HR | 6 | bool bit 7 | R | ||||
| HR | 6 | bool bit 9 | R | ||||
| HR | 6 | bool bit 10 | R | ||||
| HR | 6 | bool bit 11 | R | ||||
| HR | 6 | bool bit 12 | R | ||||
| HR | 6 | bool bit 13 | R | ||||
| HR | 6 | bool bit 14 | R | ||||
| HR | 7 | bool bit 7 | R | ||||
| HR | 7 | bool bit 8 | R | ||||
| HR | 7 | bool bit 9 | R | ||||
| HR | 7 | bool bit 10 | R | ||||
| HR | 7 | bool bit 11 | R | ||||
| HR | 7 | bool bit 12 | R | ||||
| HR | 7 | bool bit 13 | R | ||||
| HR | 7 | bool bit 14 | R | ||||
| HR | 7 | bool bit 15 | R | ||||
| HR | 8 | bool bit 0 | R | ||||
| HR | 8 | bool bit 1 | R | ||||
| HR | 8 | bool bit 2 | R | ||||
| HR | 8 | bool bit 3 | R | ||||
| HR | 8 | bool bit 4 | R | ||||
| HR | 8 | bool bit 5 | R |
No registers match
Try part of the name, an address (decimal or 0x hex) or clear the filters.
Help improve this map
- I tested it on a deviceReport whether it worked, even if you did not write the map.
- Suggest a correctionEdit the file on GitHub; it opens a pull request.
- Report a problemA wrong address, type, scale or byte order.
- Read the formatWhat each key of the file means (SPEC.md).