CONTREX CX-1200 - Manual (Page 104)

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SERIAL COM SETUP P1/1
The Serial Communications Setup screen includes parameters that configure the serial communications port.
Each CX-1200 that is connected on the same communications link, must have a unique Device Address
(CP-470). The baud rate, frame format and record format must be consistent with other devices are
communicating with the CX-1200.
Device Address
Device Address (CP-470) assigns the serial communications address for the CX-1200. This number should be different
from any other units that are on the serial link.
Baud Rate
The Baud Rate (CP-471) determines the serial communications data transfer rate (see list below) in Bits/Sec. With a 10
bit frame length, the number of Frame/Sec would be 1/10 the Baud Rate.
1 = 300 bps = 300 Baud
2 = 600 bps = 600 Baud
3 = 1200 bps = 1200 Baud
4 = 2400 bps = 2400 Baud
5 = 4800 bps = 4800 Baud
6 = 9600 bps = 9600 Baud (default)
7 = 19200 bps = 19.2k baud
Frame Format
Frame Format (CP-472) determines the parity, the number of data bits and the number of stop bits for the serial
communications.
1 = N,8,1 = No Parity, 8 data bits, 1 stop bit (10 bit frame - ASCII or Binary)
2 = E,7,1 = Even Parity, 7 data bits, 1 stop bit (10 bit frame-ASCII only)
Record Format
Record Format (CP-469) determines which type of data format (see list below) will be used for the serial communication.
3 = ASCII2 2 = ASCII 1 = BINARY
CRC Enable
If CRC Enable (CP-468) is set to “ON” (1), you must append a CRC value to all serial communications messages that are
received by the CX-1200 (See Serial Communications: Using Serial Communications). The CX-1200 checks the CRC
value against the the message contents (excluding the “STX”), then calculates a CRC value and appends it to all serial
communications responses. If CRC Enable (CP-468) is set to “OFF” (0), the CX-1200 will ignore any CRC value that is
appended to a message and will not append a CRC value to any serial communications responses.
1 = On (Enabled) 0 = Off (Disabled)