Modbus Connection to Platform Automation System
| Physical-Layer Interface Options Serial: RS232, RS485, RS422 |
| Connection |
DB9 |
| Speed |
300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 38400, 57.6K, 115.2K baud |
| Signals |
RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND RS-422: TxD±, RxD±, RTS±, CTS±, GND-485: Data±, GND |
| Isolation |
RS-232: N/A |
| RS-422: 2 KV |
| RS-485: 2 KV |
| Ethernet—TCP/IP (MODBUS Only) |
| Connection |
RJ45 Ethernet 10/100 |
| MODBUS Interface Options |
| Control |
Master or Slave |
| Device Address |
1 to 247 |
| Function Code |
Read holding registers (Modbus function code 03) |
| Allowable assignments 40001 - 49999 |
| Data Format Options |
Floating point (2 registers) |
| Swapped floating point (2 registers) |
| Double float (4 registers) |
| Swapped doungle float (4 registers) |
| Unsigned integer 16 bit |
Three MODBUS message types are supported: ASCII framing, RTU framing, or TCP/IP.
Overview
Connection to Platform Automation System
Modbus Connection
CSV ASCII String Connection
OPC Connection
PROFIBUS Connection
Database Connection
Flat Files Connection
Network Accessible Storage
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