GE GFK-1852 - Manual (Page 32)

4-10 VersaMax Serial to Ethernet Adapter User's Manual – July 2000 GFK-1852
4
Interface Mode
The line interface (I/F) mode is a bit-coded byte with the following meanings. It is
entered in hexadecimal notation:
)XQFWLRQ        
RS-232C 0 0
RS-422/485 0 1
RS-485 2-wire 1 1
7 Bit 1 0
8 Bit 1 1
No Parity 0 0
Even Parity 1 1
Odd Parity 0 1
1 Stop bit 0 1
2 Stop bit 1 1
Figure 4-3. Interface Mode Operation
Common settings:
RS-232C, 8-bit, No Parity, 1 stop = 0x4C
RS-232C, 7-bit, Even Parity, 1 stop = 0x78
RS-485, 2-Wire, 8-bit, No Parity, 1 stop = 0x4F
RS-422, 8-bit, Odd Parity, 2 stop = 0xDD
The bit combination can be easily converted to hexadecimal notation for input. See
Appendix B for conversion tables.
Flow Control
This parameter sets the local handshake method for stopping and starting output.
Generally, flow control is not required if the connection is used to pass a blocked
protocol with block sizes <1k (ACK/NAK).
No flow control: 00
XON/XOFF flow control in both directions: 01
Hardware handshake with RTS/CTS lines: 02
XON/XOFF, pass characters to host: 05