Pepper Computer RS232, RS485 user manual Communications Modules Smart I/O User’s Manual

Chapter 6 Communications Modules SMART I/O User’s Manual

char_length : This represents the number of data-bits within a transmitted character and may be 5, 6, 7 or 8

stop_bits : The number of stop-bits supported by the communi- cation protocol may be :

0 for 1 stop-bit

1 for 1.5 stop-bits or

2 for 2 stop-bits

parity :The parity bit of a data string may be : 0 for no parity

1 for odd parity or

2 for even parity

baud_rate : The board rates supported by the SM-RS232 are standard values up to 19200 baud

xon_char : XON character; typically set to 11 hex

xoff_char : XOFF character: typically set to 13 hex

eor_char : Character to be used to detect the end of record; is usually set to 0D hex.

The input and output devices are represented by keyboard and display respectively.

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March 12, 1996 ©1996 PEP Modular Computers GmbH Page 6 - 11