Instruction Manual

Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 9 – RS-232 COMMUNICATION
OMM-0082_0J AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 121 of 192
GF-130 Ph.: 800-526-0288 05/21/2014
NOTE
The Operation Time (T) Log can store thousands of records. Therefore,
to view the most recently logged record, enter “T” followed by 0 (zero)
and press Enter (i.e. T0 <Enter>). To view earlier records in reverse
chronological order, enter T and press Enter. To go back 200 or 1000
records, enter T200 or T1000, etc. and press Enter.
9.4.2 Operation Time Log
The Operation Time Log consists of a string of ASCII records stored in non-volatile memory
within the C-More Control Panel. Events such as power-up, ignition and turn-off are time
stamped. Data logged while the unit is running are run-length encoded. Data is logged or the
run-length incremented every 30 seconds. For a new run record to be logged, the fire rate or
flame strength must change by more than 5%, or the run mode must change. At steady-state,
the run-length is allowed to reach a maximum of 30 minutes before the record is logged. This
means that no more than 30 minutes of data can be lost if the unit loses power. Table 9-2
shows a sample Operation Time Log for a boiler:
The Operation Time Log can only be accessed through the RS-232 interface using a laptop or
other terminal device. Ten operation time records are displayed for each T command entry. The
operation time log can be cleared ONLY by factory authorized personnel using the Clear Log
option in the Factory menu.
Table 9-2: Sample Operation Time Log Display
Status
Fire Rate
Flame
Run Length
Date
Time
Off, Direct Drive
0
0
8
1/15/02
2:35pm
Run, Direct Drive
38
100
34
1/15/02
2:27pm
Run, Direct Drive
31
100
30
1/15/02
1:53am
Run, Direct Drive
35
100
2
1/15/02
1:23pm
Run, Direct Drive
29
100
0
1/15/02
1:21pm
Ignition
0
0
0
1/15/02
1:20pm
Off, Switch
0
0
35
1/15/02
12:30pm
Run, Manual
40
100
0
1/15/02
11:55am
Ignition
0
0
0
1/15/02
11:55am
Power-up
0
0
0
1/15/02
11:50am
NOTE
The Sensor (S) Log can store up to 1200 records. Therefore, to view the
most recently logged record, enter “S” followed by 0 (zero) and then
press Enter (i.e. S0 <Enter>). To view earlier records in reverse
chronological order, enter S and press Enter. To go back 200 or 700
records, enter S200 or S700, etc. and press Enter.