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

Страница: 24 / 44

20 LaserLight LT 1550 Technical Manual
3.8 Demand Print Displaying
The indicator and the Laser LT remote display can be set up to do a demand print display for such applications as
cattle weighing. This is useful if you want to show and keep the last weight of an animal.
Using Auto-Learn, ensure
HOLD WT
is on and continuously push the print button on the indicator to learn a demand
print display.
3.9 Run Mode Serial Commands
The Laser LT remote display has the ability to receive commands that display messages, or read a digital I/O

(2 inputs). If the Laser LT remote display is interfaced with a programmable smart indicator like the 920i, a user
program can be written to allow the user to send messages utilizing softkeys or events. When sending messages
from a user program, the user can send one message to temporarily override the streamed weight display or send
multiple messages to be displayed one at a time for several seconds each, replacing the weight display all together
if desired.
Note
The following commands are valid only while in run mode and on the host port.
3.9.1Laser LT Display Message Command
The display message command will place an alpha-numeric message on the display. The weigh annunicators
(gross, net, etc) will be cleared but the Red and Green LEDs will retain their current state.
|<AA>DM<timeout>|<message>!
or
|<AA><DM><message>!
Response: None
Where:
| = Pipe character (0x 7C)
AA = Two byte address, ASCII digits (00-31)
DM = Literal DM
Timeout = The number of milliseconds to hold the message on the display. If a timeout value is not included then
the message will remain on the display until replaced with another message or a weight string.
message = The message to be displayed
! = Exclamation point character (0 x21)
3.9.2 Laser LT Set Red/Green LED Command:
This command will set the state of the red and green LEDs at the upper left of the Laser LT .
The red and green LEDs can also be configured to operate via the digital inputs. An LED controlled from a digital
input will ignore serial commands.
|<AA>SL<data>!
Response: None
Where:
| = Pipe character (0x7C)
AA = Two byte address, ASCII digits (00-31)
SL = Literal SL
Data = The LED state data
0 = both red and green off
1 = red on
2 = red off
3 = green on
4 = green off
5 = both red and green on
! = Exclamation point character (0 x21)
3.9.3 Laser LT Get Digital Input Command
The Get Digital Input command will return the state of the requested digital input.