Instruction manual

JUPITER CM-4400 Control Module Installation and Operating Manual 273
Section 12
Jupiter ASCII
Communications Protocol
Revision E - November 10, 2005
Hardware connections for an exte
rnal computer are shown in Figure 38 on
page 81.
The set-up procedure in the Jupiter Contr
ol System File Server includes
defining one or more ports as being ASCII in the Serial Protocol Table (See
The Configurator Application on
page 107).
The control computer is identified on the MPK Devices table. You will need
to
define each port by selecting the Serial option from the Device Type
column. You must also assign each port a CP Input set, CP Output Set and
CP Level set. These sets will determine which levels, inputs, and outputs
are available to each ASCII port to control and status.
The ASCII Computer Interface is assigned to a system contr
oller port and
uses a simple ASCII data format. The serial protocol will use the following
default settings:
• 9600 Baud
•
8 Data Bits
•No Parity
•1 Stop Bit
Baud rates of 2400, 4800, 19.2K and 38.4K ar
e also user-configurable from
the Jupiter Control System File Server. The control port uses XON (0x11)
and XOFF (0x13) to control command pacing if necessary.
ASCII Data Format
The ASCII data format must have the following characteristics:
• All commands are in upper case ASCII.
•
Space (0x20) characters are optional and will be ignored.
• Each command is followed by a carriage return (0x0D).
• If a line feed (0x0A) is included it must follow the carriage return.