Rs232 Interface; Rs232 Interface Connector; Single Instrument Rs232 Connections - Promax GR-205 Manuel D'instructions

5.3 RS232 Interface

5.3.1 RS232 Interface Connector

The 9-way D-type serial interface connector is located on the instrument rear
panel. The pin connections are as shown below:
Pin Name
1 -
2 TXD
3 RXD
4 -
5 GND
6 -
7 RXD2
8 TXD2
9 GND

5.3.2 Single Instrument RS232 Connections

For single instrument remote control only pins 2, 3 and 5 are connected to the
PC. However, for correct operation links must be made in the connector at the PC end
between pins 1, 4 and 6 and between pins 7 and 8, see diagram. Pins 7 and 8 of the
instrument must not be connected to the PC, i.e. do not use a fully wired 9–way cable.
Baud Rate is set as described above in Address and Baud Rate Selection; the
other parameters are fixed as follows:
Page 18
Description
No internal connection
Transmitted data from instrument
Received data to instrument
No internal connection
Signal ground
No internal connection
Secondary received data (addressable RS232 only)
Secondary transmitted data (addressable RS232 only)
Signal ground (addressable RS232 only)
Start Bits: 1
Data Bits: 8
USER'S MANUAL. GR-205
Parity: None
Stop Bits: 1
09/2004