GE Industrial Solutions ASTAT-CD Plus - Manual (Page 32)

6. Appendix
The following table indicates the communications setting used by ASTAT-CD Plus to perform data communication via its serial port.
Name Setting Description
Baud Rate 9600 bps Bits per second transmission rate
Parity None Data error checking method
Data Bits 8 Number of data bits in each transmission
Start Bits 1 Number of bits to indicate beginning of transmission
Stop Bits 2 Number of bits to indicate ending of transmission
Data ASCII Communications protocol used
Handshaking None No need to request to send or clear to send
Computer 2 TD ASTAT-CD Plus
Pin
RS232 cable
6-4
6-2. Serial communications
ASTAT-CD Plus is able to send and receive data through a serial RS232 port. Within this port ASTAT-CD Plus communicates with a host PC.
For RS232 ASCII communications, parameter "XP" must be set to 0.
6-2-1. RS232 port, wiring and communications settings
RS232 is an operating standard of communication only in terms of electrical characteristics (voltage, timing, etc.) while the communication
procedures are defined by ASCII.
The maximum allowed RS232 cable length is 3 meters. ASTAT-CD Plus uses a connector with only 3 pins: TD, RD, SG.
Astat Terminal Name
TD Transmit Data
RD Receive Data
SG Signal Common
RS232 connector 3 RD
D-SUB9 5 SG