DigitalFlow™ DF868 Multipurpose Ultrasonic Liquid Flowmeter Programming Manual (2-Channel)
47
Chapter 1. Programming Site Data
1.7.9
MODBUS Register Map (cont.)
Notes:
1.
Clear Totalizers:
flag from the 8051 to clear totalizers in the 68332 memory.
2.
Error Value:
see Chapter 2,
Error Codes and Screen Messages
, in the
Service Manual
for error codes.
3.
Average:
average of channel 1 and channel 2 if both channels out of error,
channel 1 value if channel 2 is in error,
channel 2 value if channel 1 is in error,
zero if both channels in error
4.
Average Error Status:
0 = both in error
1 = chan 2 in error
2 = chan 1 in error
3 = both OK
5.
Registers for Analog Inputs:
The values for the inputs apply only to special inputs (supply and return temperature inputs are in other defined
registers). The DF868 can hold only up to 4 special inputs. Input registers for slots and inputs that are not resident
or not programmed as special will have an output value of 0.
6.
MODBUS baud rate:
5 = 2400, 6 = 4800, 7 = 9600, 8=19,200.
7.
MODBUS parity:
0 = none, 1 = odd, 2 = even
8.
MODBUS stop bits:
1 = 1 stop bit, 2 = 2 stop bits
9.
General:
Registers are written if corresponding functions are actuated by the user. Registers for unactuated functions are
initialized to zero at startup.