Description
概观
Essential details:MCM-3150 Modbus Master/Slave Communication Module
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MCM-3150 Modbus Master/Slave Communication Module
Functional Specifications
This product supports the following general capabilities:
• Up to 100 entries in the command list, each fully configurable for function, slave address, register to/from addressing and word/bit count(Master port)
• Continuous polling of command list(Master port)
• Support for the storage and transfer of up to 4000 registers to/from the PLC
• Event driven bit and register write commands (Master port)
• Full radio, modem and multi-drop support
• Supports RS-232C, RS-422 and RS-485 interfaces
• Communication error codes and counters returned to ladder logic(Slave port)
• Communication error codes returned to ladder logic on a per command basis (Master Port)
The following Modbus features have been implemented in both configurations:
• RTU mode (binary) with CRC-16
• ASCII mode with LRC error checking
• Broadcast commands
• 125 word reads and writes
• Floating Point data movement supported
• Function codes supported:
o 1 : Read output status
o 2 : Read input status
o 3 : Read multiple data registers
o 4 : Read input registers
o 5 : Force single coil (Write single bit)
o 6 : Preset (Write) single data register
o 15 : Force multiple coils (Write multiple bits)
o 16 : Preset (Write) multiple data register
• Configuration via simple ladder logic (Example provided with each product)