Input Commands - Scale House GAI420 Operation Manual

10.4.5 Result of judgment when operating the balance with the limit function (S1: one
character)
S1
L
G
H
(SP)
10.4.6 Status (S2: one character)
S2
S
U
E
(SP)

10.5 Input Commands

Users can control the balance remotely by transmitting commands from an external device. Two types of control
commands are available:
(1) Instruction for tare subtraction
(2) Setup of output control
10.5.1 Command Transmission Method
(1) A command is transmitted to the balance from an external device. Since the data flow (transmission and
reception) is stored by a full-duplex system, commands can be transmitted regardless of their data-transmission
timing.
(2) When the balance has executed the received command, it activates a normal end response or transmits the
requested data, via the transmitting command. If the balance was unable to execute the command or received an
erroneous command, it transmits an error end response. If the balance is working properly, it usually returns a
response within a second after it receives the transmitted command. If the balance receives a transmission while it
is conducting a procedure (such as the setup of a function or a span adjustment), it will transmit a response when
the procedure finishes.
(3) When transmitting more than one command to the balance from a remote device, wait until you have received a
confirmation on the first transmission before transmitting the next.
10.5.2 Command format
(1) Command format
Composed of four characters (ASCII), including the terminators (CR=0DH, LF = 0AH)
1 2 3
C1 C2 CR
Code
4CH
47H
48H
20H
Code
53H
55H
Data error (data other than S2 is invalid.)
45H
20H
4
LF
Description
LO (LOW)
OK (GOOD)
HI (HIGH)
No limit value specified
Description
Data stable
Data unstable
[o-Err], [u-Err]
No status specified
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