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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