Brookfield CAP2000 Viscometer Manual do Utilizador descarregar pdf (Página 31)

Brookeld Engineering Labs., Inc. Page 31 Manual No. M02-313-G0812

APPENDIX B - Communications

Printer Output - CAP 2000+

The cable connection on the CAP 2000+ Viscometer is a standard 25 pin parallel printer cable

connector.

RS 232 Output - CAP 2000+

When connecting the CAP 2000+ to a computer, use Brookeld Computer Cable (Part No.

DVP-80). If you are not using the Brookeld computer cable, jump (connect) pins 4 and 9

(refer to Figure 1) on the CAP 2000 end of the serial cable. The cable connections are:

Com Port RxD (pin 2 (9 pin) or pin 3 (25 pin) to CAP Txd (pin 3)

Com Port TxD (pin 3 (9 pin) or pin 2 (25 pin) to CAP RxD (pin 2)

Com Port ground (pin 7) to CAP Serial Ground (pin 5)

The RS232 protocol is implemented as follows:

Baude rate: 9600

Parity: None

Data bits: 8

Stop bits: 1

External Control

Serial Ground

Transmit Data (TxD)

Receive Data (RxD)

No Connection to Pin 1

Figure 1

The following pages review the transmit/receive commands between the CAP 2000+ and a

computer (Table 2), the byte status interpretation (Table 1) and a sample program for external

control of the CAP 2000+ Viscometer.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 37

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Brookfield CAP2000 Viscometer Manual do Utilizador Página 31