Transcell Technology PC 150, Руководство по обслуживанию

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Page B-4
“A” - This command is sent to the scale to request an acknowledgement. This
acknowledgement consists of two characters: <STX> and <CR>.
B.1.5 NCI 3800 / TRINER DEMAND FORMAT
Figure B-5 shows the weigh data record sent to the host when the scale receives a Print
(“W”<CR>) command. The same weigh data record is sent out of the serial port if the
PRINT key is pressed on the scale’s front panel. The status record is shown in Figure B-6. If
an invalid host command is received, the scale responds with the invalid command record
shown in Figure B-7. See section below for more information.
<LF> (1) <xx.xxx> (2) <HSB>
Line
Feed
High Status Byte:
Weight Data
Not Used
Not Used
Bit Function
B3
B2
B1
B0
Not at zero
Motion
See Table
High Status Byte Table
<LSB>
Low Status Byte:
See Table
<CR> (4)
Carriage
Return
<ETX>
End of
Transmission
Not Used
Bit Function
B3
B2
B1
B0
Over capacity
Under capacity
("1" = "True")
Low Status Byte Table
("1" = "True")
Not Used
(1) Insert <SP> for Triner.
(2) Insert <SP> for NCI.
<LB/KG>
(4) Insert <LF> for NCI.
Units (3):
LB = pound
KG = kilogram
(3) Use lower case for NCI.
FIGURE B-5. NCI 3800 / Triner “Demand” Weigh Data Record
<LF> <HSB>
Line
Feed
High Status Byte:
Same as "W"
<LSB>
Low Status Byte:
See as "W"
<CR>
Carriage
Return
<ETX>
End of
Transmission
S <LF> ? <CR>
Line
Feed Carriage
Return
FIGURE B-6. NCI 3800 / Triner “Demand” Status
Record
FIGURE B-7. NCI 3800 / Triner “Demand”
Invalid Command Record
B.1.5.1 RECOGNIZED HOST COMMANDS
These commands are issued from the host to the scale and consist of two ASCII
characters.
“W”<CR> - This command is sent to the scale to print the indicated display. The
host should check the status bytes to determine if the scale is in
motion, positive overload or negative overload.