Section 9 Meter Bus Response; Point-To-Point Or Multipoint Command Mode - Omega DP41-B Series User Manual

9. Meter Bus Response
As detailed before, the meter can receive and transmit at baud rates up to 19,200. No
data is ever lost by the meter even at the highest rate with the most complex meter
program, provided that the computer does not attempt to interrupt a transmission from
the meter by transmitting at the same time.
When not transmitting, the meter continually looks for a new character on the bus.
When any character is received, the meter drops out of ALARM mode; (if in that mode)
checks for the Recognition Character, the start of a new message.

9.1 POINT-TO-POINT OR MULTIPOINT COMMAND MODE

If the recognition character is correct, the meter now checks for the address in the
Multipoint mode.
When a match is obtained, the meter then decodes the Command Code and fulfills that
command. Otherwise, the meter ignores the command and continues to look for
another recognition character.
9-1