Panametrics DigitalFlow GS868, Руководство по программированию, Страница: 43 / 146

DigitalFlow™ GS868 Programming Manual (2-Channel) 33
Chapter 1. Programming Site Data
Note:
1. Clear Totalizers:
flag from the 8051 to clear either the Channel 1 or Channel 2 totalizers.
2. MODBUS baud rate:
5 = 2400, 6 = 4800, 7 = 9600, 8 = 19,200
3. MODBUS parity:
0 = none, 1 = odd, 2 = even
4. MODBUS stop bits:
1 = 1 stop bit, 2 = 2 stop bits
5. AVG Error Code:
0=Both Ch1 and Ch2 are in error.
1=Ch1 only is in error
2=Ch2 only is in error
3=Both channels are error free
6. You must scale measurements in the host system. For example, velocity scaling is two decimal places; thus, if the
MODBUS card reports that the velocity is 100, the host system must interpret the number as 1.00 (two decimal
places)
1.8.6 Activating Security
In order to prevent unauthorized tampering with the flowmeter’s programming, the Model GS868 is equipped with a
security feature that locks out the following menus:
•
Program Menu [PROG]
• Calibration Menu [CAL]
• Log Menu [LOG]
•
Clear Menu
[CLR]
When the system is locked, access to the above menus will be denied unless the correct password is entered. The
Model GS868 is shipped with a
default password, which is given later in this section. For increased security, the
default password should be changed.
73 90 Avg Std Volumetric #Q DIGITS 4 (IEEE 32 bit)
75 94 Avg Fwd Totals #T DIGITS 4 (2 16 bit int)
77 98 Avg Rev Totals #T DIGITS 4 (2 16 bit int)
79 9C Avg #Tot Digits 0 2
80 9E Avg Mass Flow #M DIGITS 4 (IEEE 32 bit)
82 A2 Avg Fwd Mass Totals #MT DIGITS 4 (2 16-bit int)
84 A6 Avg Rev Mass Totals #MT DIGITS 4 (2 16-bit int)
86 AA Avg #Mass Tot Digits 0 2
87 AC Avg Timer 2 4 (2 16-bit int)
89 B0
5
Avg Error Code
0 2
90 B2 Avg Sound Speed 3 4 (2 16-bit int)
508 3F6
2
MODBUS baud rate
0 2
509 3F8
3
MODBUS parity
0 2
510 3FA
4
MODBUS stop bits
0 2
511 3FC MODBUS meter addr 0 2
512 3FE RESERVED --- ---
Table 12: MODBUS Registers for a 2-Channel GS868(Continued)