32 TEFC_A-BA-e-2110
10 RS-232 interface
RS-232 ensures two-way data exchange between the scale and external devices. Da-
ta is sent asynchronously in ASCII code.
To ensure communication between the balance and the printer, the following condi-
tions must be met:
• Connect the scale with the printer interface using the appropriate cable. Trou-
ble-free operation is ensured only when the appropriate interface cable by
KERN is used.
• Communication parameters (e.g. transmission speed) of the scale and the
printer must be compliant.
10.1 Technical specification
Port 9-Pin--pin mini D-Sub plug
Pin 2 RXD Input
Pin 3 TXD Output
Pin 5 GND Signal ground
Transmission
speed
The choice of 4800/9600
10.2 Protocol template (KERN YKB-01N)
10.3 Printout protocol (continuous data transmission)
Byte 1 2 3 4 5 6 7 8 9 10 11 12 13
+ <20> <20> 1 5 0 . 0 k g <CR> <LF>
– <20> <20> <20> 5 0 . 0 k g <CR> <LF>
O L
Nr Description
1 The sign (plus/minus); alphabet: O
2 ∼ 8
7 bits of weighing value including the decimal point
9 ∼ 10
Weight unit
11 ∼ 12
End symbol
<20> Space
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