# Slot 3 Menu 15 Single Line Descriptions − Modbus

Mode: Open‑Loop

Parameter | Range | Default | Type
--- | --- | --- | ---
3.15.001 | Enable Modbus | Off (0) or On (1) | On (1) | RW | Bit |  |  |  | US
3.15.002 | Reset Modbus | Off (0) or On (1) | Off (0) | RW | Bit |  | NC |  |
3.15.003 | Default Modbus | Off (0) or On (1) | Off (0) | RW | Bit |  | NC |  |
3.15.004 | Modbus Configuration Error | No error (0), Port in use (1), Timeout event (2), Out of memory (3), Connection error (4) |  | RO | Txt | ND | NC | PT |
3.15.005 | Modbus Listening Port | 0 to 65535 | 502 | RW | Num |  |  |  | US
3.15.006 | Maximum Connections | 0 to 4 | 3 | RW | Num |  |  |  | US
3.15.007 | Maximum Priority Connections | 0 to 4 | 0 | RW | Num |  |  |  | US
3.15.008 | Maximum Connections Per Client | 1 to 4 | 2 | RW | Num |  |  |  | US
3.15.009 | Modbus Timeout | 1 to 10000 ms | 100 ms | RW | Num |  |  |  | US
3.15.010 | Modbus Timeout Action | Trip (0), No action (1) | No action (1) | RW | Txt |  |  |  | US
3.15.012 | Modbus Timeout Event Type | No event (0), Event 0 (1), Event 1 (2), Event 2 (3), Event 3 (4) | No event (0) | RW | Txt |  |  |  | US
3.15.013 | Modbus Register Addressing Mode | Standard (0), Modified (1) | Standard (0) | RW | Txt |  |  |  | US
3.15.020 | Priority Connection 1 | 0.0.0.0 to 255.255.255.255 | 0.0.0.0 | RW | IP |  |  |  | US
3.15.021 | Priority Connection 2 | 0.0.0.0 to 255.255.255.255 | 0.0.0.0 | RW | IP |  |  |  | US
3.15.022 | Priority Connection 3 | 0.0.0.0 to 255.255.255.255 | 0.0.0.0 | RW | IP |  |  |  | US
3.15.023 | Priority Connection 4 | 0.0.0.0 to 255.255.255.255 | 0.0.0.0 | RW | IP |  |  |  | US

RW | Read / Write | RO | Read-only | Bit | Bit parameter | Txt | Text string | Date | Date parameter | Time | Time parameter
Chr | Character parameter | Bin | Binary parameter | IP | IP address | Mac | MAC address | Ver | Version number | SMP | Slot, menu, parameter
Num | Number parameter | DE | Destination | ND | No default value | RA | Rating dependent | NC | Non-copyable | PT | Protected
FI | Filtered | US | User save | PS | Power-down save |  |  |  |  |  |