Salter Brecknell 7821 - Manual (Page 20)

Model 7821 Bench Scale User’s Manual 20
Serial
Communications
Protocol
NCI
Communications
Protocol
DE-9 Female Scale DE-9 Male Host
Pin Name Direction Pin Name Direction
1. JMP 1 - 1. DCD IN
2. TXD OUT 2. RXD IN
3. RXD IN 3. TXD OUT
4. JMP 1 - 4. DTR OUT
5. SG - 5. GRD -
6. JMP 1 - 6. DSR IN
7. JMP 2 - 7. RTS OUT
8. JMP 2 - 8. CTS IN
9. NC - 9. RI IN
For command/response descriptions, please
refer to the following Weigh-Tronix NCI Serial
Communications Documents:
NCI Standard Protocol: 8408-14788-01 (W, S, Z,
H, U, M only)
8213 Protocol: 8408-14788-03
NCI 3835 Protocol: 8408-14788-12
This standard is used by all NCI bench scale
products.
SYMBOL KEY:
End of text character (03/hex)
Line feed character (0A hex)
Carriage return character (0D hex)
Space (20 hex)
x Character from display including
minus sign
hh… Two or more status bytes
uu Unit of measure (lb, kg, oz, g, etc.
using ANSI standard abbreviations)