Chapter 2 Basic Unit Specification
3. Communication ports
2-22
3.3.4 RS/MBUS instruction
Here is the briefing about this function and as for more information, plese refer to Instruction
Description F80 (RS) and F87 (MBUS).
Application Instruction
F80: RS S m D n K
F87: MBUS S m D n K
S: sending address
m: data length(0~255)
D: receiving address
n : receiving data length(0~255)
K: port selection, range: 0~1 . 0: RS485port,
1: RS485/ RS232 expansion communication port
z RS instruction needs no communication protocol. Data communication is available for other
communication unit including PC, barcode reader and printer.
z MBUS instruction is for modbus master with RTU mode or ASCII mode.。
3.4 Wiring methods
A. Wiring for PC/PDA communication port
PC
TP03
PC/PDA cable
(TP-302PC)
PDA
Note: User can mode the adapter that tranfers signal RS422 from 9 pin D-type connector to RS
485 on A/B terminal. Please refer to section 5 of Chapter 1 for more information about the
TP-302PC Pins and its definition.
B. Wiring for RS232 expansion card
TP03
RS232 standard cable
PDA
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