Serial Interfacing
During data communication between the balance and an on-line device
(computer), “telegram-style” information consisting of ASCII characters is
transmitted by the interface. For error-free data communication, the
interface parameters, including the baud rate, parity and handshake mode
as well as the character format, must be the same for both units. You can
change these parameters in the balance operating menu so that they match
those of the on-line device. If you do not plug a peripheral device into the
interface port on the balance, this will not generate an error code. In this
case, data will be output but not received.
Data Bits
7
not adjustable
Baud Rate
Code
150 baud
5 1 1
300 baud
5 1 2
600 baud
5 1 3
1,200 baud
5 1 4*
2,400 baud
5 1 5
4,800 baud
5 1 6
9,600 baud
5 1 7
19,200 baud
5 1 8
Parity Code
Mark
5 2 1
Space
5 2 2
Odd
5 2 3*
Even
5 2 4
Number of Stop Bits
Code
1 stop bit
5 3 1*
2 stop bits
5 3 2
Handshake
The balance interface has a 23-byte transmit buffer and a 40-byte receive
buffer.
You can access the balance operating menu to define various handshake
parameters:
- software handshake
(Menu Code 5 4 1)
- hardware handshake with 2 characters after CTS
(Menu Code 5 4 2*)
- hardware handshake with 1 character after CTS
(Menu Code 5 4 3)
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