user manual

11.1. Product Specifications

The T-3 card is a hardware product designed to be the communications front end

for the Raypak B6000 Boiler Control and a modbus Master Host.

The product includes the following functionality:

Modbus Slave Specifications

• Protocol Modes:

RTU mode with CRC-16 error checking

• Supported Modbus Function codes:

2 Read Input Status

3 Read Multiple Data Registers

4 Read Input Registers

6 Preset (Write) Single Data Register

8 Loopback Test (Test 0 only)

• Supports broadcast commands from host

• RS-485 electrical interface

Raypak B6000 Interface

• RS-485 electrical interface

• Emulates Raypak Modem address and functionality

General Specifications

• Configurations via dip switches

Slave Address, Baud and Parity

Hardware Specifications

• 4” X 5” form factor

• Two male 9-pin D Shell connectors

• Communications Status lights - Active and Fault for each port

• 9 to 30 VDC external power