ProSoft 3250-L532M Overview
The 3250-L532M Remote Terminal Unit from ProSoft Technology enhances SCADA systems with Modbus connectivity and Allen-Bradley SLC 5/03 functionality. It combines advanced diagnostics, flexible configuration, and rugged industrial performance.
Processor and Communication
The 3250-L532M is built on the Allen-Bradley SLC 5/03 processor platform. It supports Modbus Slave communication on Channel 0 through an RS-232C port, and DH-485 protocol on Channel 1 using an RJ45 port. This dual-port setup allows seamless programming, Modbus data exchange, and network communication.
Configuration is achieved directly in ladder logic using file N100, which defines slave address, baud rate, and parity. The module also auto-switches between DF1 and Modbus protocols, making integration efficient.
Modbus Protocol Support
The 3250-L532M fully supports Modbus RTU and ASCII modes with CRC-16 and LRC error checking. It handles standard function codes for reading and writing coils, inputs, and registers, and extends support for floating-point operations using Enron addressing.
Technical Specifications
General Specifications
| Parameter | Specification |
|---|---|
| Processor Base | Allen-Bradley SLC 5/03 |
| Memory Capacity | 16K |
| I/O Capacity | 1024 inputs, 1024 outputs |
| Current Load | 500 mA @ 5 VDC, 175 mA @ 24 VDC |
| Operating Temp. | 0°C to 60°C (32°F to 140°F) |
| Storage Temp. | -40°C to 85°C (-40°F to 185°F) |
| Humidity | 5% to 95% RH, non-condensing |
| Vibration | 5 g, 10–150 Hz |
| Shock Resistance | 30 g operational, 50 g non-operational |
Communication Parameters
| Channel | Type | Interface | Functions |
|---|---|---|---|
| Channel 0 | RS-232C | DB-9 male | Modbus Slave / DF1 |
| Channel 1 | DH-485 | RJ45 | Programming / DH-485 |
- Slave Address: 1–127 (0 for broadcast)
- Baud Rate: 300–19,200 baud
- Parity: None, odd, or even
- Stop Bits: 1 or 2
- Configurable Delays: RTS send, RTS off, pre-send, inter-character (0–2500 ms)
Modbus Function Codes
- 1: Read Coils
- 2: Read Inputs
- 3: Read Multiple Registers
- 4: Read Input Registers
- 5: Force Single Coil
- 6: Write Single Register
- 8: Loopback Test
- 15: Write Multiple Coils
- 16: Write Multiple Registers
LED Indicators
- RUN: Processor active
- FORCE: Output force enabled
- FLT: Fault condition
- DH485: Activity on DH-485 port
- BATT: Battery status
- MODBUS: RS-232 communication activity
Applications
The 3250-L532M is ideal for SCADA applications requiring Modbus Slave integration with Allen-Bradley platforms. It supports floating-point data, real-time clock functions, and up to 1024 I/O points, making it highly effective for automation, monitoring, and control.
Details
| Weight | 0.26 kg |
|---|---|
| Dimensions | 145 × 130 × 65 mm |
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