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Terminal Numbers and Functions Connection between Balances and Personal Computers

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10.2 Connection between Balances and Personal Computers

„„„ Sample connection with an IBM-PCAT compatible „„„ IBM-PCAT compatible D-SUB9P Balance DIN5P 3 2 5 1 7 8 6 4 TXD RXD GND DCD RTS CTS DSR DTR RXD TXD GND 3 4 5 „„„ Sample connection with PC9801 „„„ Balance DIN5P PC9801 D-SUB25P TXD RXD GND DCD RTS CTS DSR DTR RXD TXD GND 3 4 5 3 2 5 20 7 8 6 4 34

10.3 Interface Specifications

1 Transmission system Serial transmission with start-stop synchronization 2 Transmission rates 1200240048009600 bps. 3 Transmission codes ASCII codes 8-bit 4 Signal levels Compliant with EIA RS-232C HIGH level Data logic 0 +5 to +15 V LOW level Data logic 1 -5 to -15 V 5 One-character bit configuration Start bit: 1 bit Data bit: 8 bits Parity bit: 01 bits Stop bit: 2 bits 6 Parity bit: noneoddeven LSB MSB ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ⑫ Logic “1” Logic “0” Data bit Start bit Parity bit may be omitted Stop bit 35

10.4 Output Data

By changing the function settings on the main unit of the balance, users can select either of the following formats: See “4.2 Description of Functions,” on page 13.

10.4.1 Data Format

1 Six-digit numeric format Composed of 14 characters, including the terminators CR = 0DH, LF = 0AH. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 P1 D1 D2 D3 D4 D5 D6 D7 U1 U2 S1 S2 CR LF 2 Seven-digit numeric format Composed of 15 characters, including the terminators CR = 0DH, LF = 0AH. A parity bit can also be appended. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 P1 D1 D2 D3 D4 D5 D6 D7 D8 U1 U2 S1 S2 CR LF 3 Six-digit numeric format for model provided with an auxiliary scale interval Composed of 15 characters, including the terminators CR=0DH, LF=0AH, with “” added to the left of the auxiliary-scale-interval place. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 P1 D1 D2 D3 D4 D5 D6 D7 D8 U1 U2 S1 S2 CR LF 4 Seven-digit numeric format for model provided with an auxiliary scale interval Composed of 16 characters, including the terminators CR=0DH, LF=0AH, with “” added to the left of the auxiliary-scale-interval place. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 P1 D1 D2 D3 D4 D5 D6 D7 D8 D9 U1 U2 S1 S2 CR LF

10.4.2 Polarities P1: one character

P1 Code Description + 2BH When data is zero or positive - 2DH When data is negative SP 20H When data is zero or positive

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