C&S Controls Laser LT RD-1550, Техническое руководство

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EDP Commands 25
4.0 EDP Commands
The Laser LT remote display can be controlled by a personal computer or a remote keyboard connected to the
remote display. Control is provided by a set of EDP (Electronic Data Processing) commands that can simulate front
panel key press functions, display and change setup parameters and perform reporting functions.
EDP commands are able to view or change the parameters either in Run or Configuration mode. If used in the Run
mode, the user must send the command
SAVE.CFG
when finished.
Note
Any port that is selected for the host port will not accept EDP commands. A host device cannot change any
parameters using the port the data is being sent out on.
4.1 Annunciator and Weight Position EDP Commands
The Laser LT uses an Auto-Learn function which automatically determines the serial settings and data format used
by the attached indicator. EDP commands are used for manually configuring the weight stream parsing.
4.1.1 Data Formats
Continuous Output Serial Data Format
If continuous transmission is configured for a serial port in the Host (STREAM parameter set to LFT or INDUST
on the SERIAL menu), the
Laser LT receives data using the Consolidated Controls serial data format shown in
Figure 4-1:
<STX> <POL> <wwwwwww> <UNIT> <G/N> <S> <TERM>
ASCII 02
decimal
Polarity:
<
space > = Positive
<–> = Negative
Weight: 7 digits, right-justified, dummy
zeroes, decimal point with no leading
zeroes except for leading zero immediately
preceding the decimal point. Leading
zeroes transmitted as spaces.
L = pounds
K = kilograms
T = tons
G = grains
<space > = grams
O = ounces
G = Gross
N = Net
Status:
<
space > = valid
I = Invalid
M = Motion
O = Over/under range
Z = Center of zero
<CR> <LF>
or <CR>
Figure 4-1. Continuous Output Serial Data Format
4.1.2 Annunciators
The following table lists the EDP commands for configuring the annunciators.
Command Default Value Description
COZ.CHAR 90 (Z) Allows the user to select the center of zero status character
COZ.LOC 0 This is the character location in the string format. A 0 (zero) indicates that the
Laser LT will look for the character anywhere in the incoming data. The
range is 0-63
GROSS.CHAR 71 (G) Allows the user to select the gross character
GROSS.LOC 0 This is the character location in the string format. A 0 (zero) indicates that the
Laser LT will look for the character anywhere in the incoming data. The
range is 0-63
NEG.CHAR 45 (-) Allows the user to select the negative character
NEG.LOC 0 This is the character location in the string format. A 0 (zero) indicates that the
Laser LT will look for the character anywhere in the incoming data. The
range is 0-63
NET.CHAR 78 (N) Allows the user to select the net character
Table 4-1. Annunciator and Weight Position EDP Commands