Serial Communication
Output Formats
VT300 Technical Manual, Rev. A4
51
Doc
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TM-VT300-EN
SYSTEM
>
2COM
>
EDP
>
DIS. PROTO
(
YES
/
NO
) – operator disable. If this option
is turned on, an operator can interrupt the protocol by pressing any key on this
indicator’s keypad.
SYSTEM
>
2COM
>
EDP
>
HOST ENQ.
(
YES
/
NO
) – host enquiry. Turning off host
enquiry specifies that the indicator should send weight information continuously,
not on demand.
Data Block Composition
Character/s Description
STX (02h)
Start of transmission.
ASCII (any)
ASCII data is identical to the data printed.
ETX (03h)
End of transmission.
BCC
Block check character (XORSUM of all data characters STX, ETX inclusive).
6.3.7
Remote Printer Output
Works With Ports
Port 2 (RS485 or RS232)
Description
Used to transmit the data printed on the local printer to a remote printer. No
handshake is required.
6.3.8
Master-Slave Protocol
Works With Ports
Port 2 (RS232 or RS485)
Description
The indicator participates in a network of several indicators. In such a network, all
slave units have access to weighing data in the master's memory or storage device.
You specify this indicator’s network address by setting the port 2 output method
(
SYSTEM
>
SET
>
2COM
>
OPERATION
)
to
M/S A
,
where A is the network address (a
unique letter between A [41h] and Y [59h]).
The
SYSTEM
>
SET
>
2COM
>
OPERATION
>
M/S A
submenu has several other
options, beside the network address parameter. These are described below.
