ProSoft Technology 5202-DFNT-MCM4 - Manual (Page 20)

MCM ♦ ProLinx Gateway MCM Protocol Configuration
Modbus Master/Slave Driver Manual
Page 20 of 80
ProSoft Technology, Inc.
October 16, 2009
3.1.6 Float Offset
0 TO 3998
This parameter defines the starting register for floating-point data in the internal
gateway database. This parameter is used only if the Float Flag is set to Y
ES .
For example, if the Float Offset value is set to 3000 and the Float Start parameter
is set to 7000, the data returned as floating-point data for register 47001 (or
407001) will actually come from internal gateway registers 3000 and 3001. If the
requested address was 47002 (407002), the data will be returned from internal
registers 3002 and 3003. If the requested address was 47101 (407101), the data
will be returned from internal registers 3200 and 3201; and so on.
3.1.7 Protocol
RTU
ASCII
This parameter specifies the Modbus protocol version to be used on the port.
Valid Protocols are RTU and ASCII.
3.1.8 Baud Rate
This is the baud rate to be used on the port. Enter the baud rate as a value.
Baud Rate Parameter Value
110 110
150 150
300 300
600 600
1200 12 OR 1200
2400 24 OR 2400
4800 48 OR 4800
9600 96 OR 9600
14,400 14, 114 OR 14400
19,200 19, 192 OR 19200
28,800 28, 288 OR 28800
38,400 38, 384 OR 38400
57,600 57 OR 576
115,200 115 OR 1152
Note: On all ProLinx gateways, data from the application port on the main board, serial Port 0, is
not buffered. Packets go directly to and from the serial chipset to the processor. This has the
potential to cause the serial communications to become erratic at baud rates above 38,400 baud.
ProLinx gateways with 4 serial ports have a separate serial interface board for serial Ports 1, 2,
and 3. These serial ports are buffered, and can handle communications up to 115,200 baud.