![Contrec 515 BR03 Скачать руководство пользователя страница 28](http://html1.mh-extra.com/html/contrec/515-br03/515-br03_operation-manual_2658193028.webp)
Installation & Maintenance
18
515 BR03 - 15 August 2021
Communications
The communication protocols are described in
COM-1 RS-232 Port
The COM-1 RS-232 port has a 9-pin DB female connector and has the
following pinout:
Note:
The instrument does not require a null-modem cable for connection
to a personal computer. Refer to
page 69 for cable termination requirements.
COM-2 RS-485 Port Option
Up to 32 units can be connected to a common RS-485 bus. Each unit has a
unique address that the host computer uses to identify each instrument.
Figure 10 shows the connection of several instruments to a computer using
the RS-485 port.
Figure 10 RS-485 Interface Connections
Pin 1
Not used
Pin 2
Transmit (TxD)
Pin 3
Receive (RxD)
Pin 4
Not used
Pin 5
Ground
Pin 6
Not used
Pin 7
Handshake line (CTS)
Pin 8
RTS Out
Pin 9
Not used
1
2
3
4
5
6
7
8
9
Twisted Pair
Load
120 ohms
Gnd
Gnd
Host
Computer
Comms
Gnd
+
-
+ -
+
-
Instrument
Instrument
19 20 21
19 20 21
Содержание 515 BR03
Страница 8: ...viii 515 BR03 15 August 2021...
Страница 10: ...x 515 BR03 15 August 2021...
Страница 16: ...Introduction 6 515 BR03 15 August 2021...
Страница 78: ...Instrument Calibration 68 515 BR03 15 August 2021...
Страница 100: ...90 515 BR03 15 August 2021...
Страница 106: ...96 515 BR03 15 August 2021...