Weigh Cell Operating Instructions 51
Technical Data
13.3 Data Interfaces
13.3.1 Specification of the RS232 Interface
Type of interface: Serial interface Interface operation: Full duplex
Level: RS 232 Transmission rate: 600...115200 baud
Parity: odd, even, none Number of data bits: 7 or 8 bits
Character transmission: Start bit, 7-bit ASCII, parity, 1 or 2 stop bits
Handshake
—
—
Data output of balance: 16 or 22 characters
Female interface connector: 9-pin D-Sub DB9S with screw connection
Maximum cable length: 15 m
Pin assignment
Pin 2: Data output (TxD)
Pin 3: Data input (RxD)
Pin 4: Not assigned
Pin 5: Internal ground
Pin 6: Not assigned
Pin 7: Clear to Send (CTS)
Pin 8: Request to Send (RTS)
Pin 9: Not assigned
13.3.2 Specification for the USB-C Interface
Communication: USB OTG
Connectable devices: YRD01 operating and display unit or PC
13.4 Cabling Diagram (Cable)
For connecting a computer or other peripheral device to the weigh cell according to the RS-232C/V24 standard
Do not assign any other pins on the balance!
TxD 2 2
RxD 3 3
CTS 7 7
RST 8 8
GND 5 5
Fig. 9: Cable type: AWG 24 specification
Balance
9-pin
Male connector
Computer
9-pin
Female connector
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