| | Modbus Plant Edition provides support for: - Modbus Ethernet (TCP/IP) using the Modicon NOE module
- Modbus Master
- Modbus Slave configurations (Serial connections only)
- Various Modbus protocols
- Bently Nevada
- Daniel Modbus
- Enron Modbus
- Modbus (using RS-232 Serial)
- Modbus Plus using an SA-85 card
- Modbus ASCII
- Modbus RTU (binary)
- ... many more
- Terminal Server
- Read and write access to all PLC register types
- Concept style floating point analog registers
- Multiple communication channels at the same time:
- Serial
- Network (Ethernet TCP/IP and UDP/IP)
Modbus SCADA Edition provides support for: - Modbus Master mode
- Modbus Slave mode
- Modbus RTU, Modbus ASCII, and Modbus TCP protocols
- Multiple communication channels at the same time:
- Direct Serial (RS-232/422/485)
- Radio
- Network (Ethernet TCP/IP and UDP/IP)
- Terminal servers (TCP/IP and UDP/IP)
- CDPD (Cellular Digital Packet Data)
- Dial-up (including dial-in and dial-out)
- Multiple Modbus register support:
- Read Modbus Filetype registers 0,1,3,4
- 32-bit register support via 3W and 4W Filetypes (Enron/Daniels)
- Single-precision IEEE floating-point analog registers
- Optimized for low-bandwidth and noisy communication channels
- Supervisory control using single-destination and broadcast commands
- Redundancy:
- Channel redundancy
- Fail-over and Fail-back
- Comprehensive polling engine:
- Round-robin polling
- Interleaved polling
- Demand polling
- Configurable polling priorities
- Port configuration:
- Multiple ports
- Configurable baud rate for each port
- Serial and TCP/IP
- Same station delay
- Direct, modem/radio, dial-up
- External configuration
- Polling engine control
- Online changes without data loss
- Complete access to communication diagnostics
- OPC Server statistical tags:
- Status flag
- Poll count
- No-response count
- Incomplete poll
- Fail/retry count
- All station time updates
- Response timeout
- Number of OPC Clients connected
- OPC Server status
- Supports bitmask read and write
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