BC Biomedical DPM-2001, Руководство пользователя

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Since the meter does not handle a great deal of data, the link has been optimized to allow
the user, through very simple instructions, to control and interrogate the meter. NOTE:
RS232 is only available on DPM-2001 Plus and DPM-2100 models.
Use RS232 Cable P/N DPM2000C to connect from the RS232 connector on the top of the
DPM to a DB9 Com Port connector on a PC. The DPM is configured as Data
Communications Equipment (DCE) and is intended to connect directly to Data Terminal
Equipment (DTE). This is the standard direct connection to a PC.
The Link communicates at a fixed 115,200 baud with 8 bit data, 1 stop bit, 1 start bit, no
parity and no handshaking.
The following section describes the JPC Protocol used by the meter.
The JPC Protocol consists of 6 basic commands:
R - READ
W - WRITE
U - UPLOAD
Q - QUICKSEND
V
- VERSION
X - CANCEL
The data format is standard ASCII and all data are BCD values.
The following is a breakdown of each of the commands and the way they are accessed.
The meter will echo all characters that are typed to it. When used with a terminal, this will
provide the appropriate display. When used with a computer system, this will provide direct
feedback of the fact that unit has accepted the data.
All commands are completed with a carriage return from the computer. All commands will
be acknowledged by a carriage return, line feed ($0D,$0A). If a command is not valid, the
meter will respond with “??”. All commands are not case sensitive.
COMMUNICATIONS