The RS232C interface specifications are outlined in Table 8.
Table 8: RS232C Interface Functions
Name
Symbol
Pin Number
Signal Direction
Transmitted data
TxD
2
out
Received data
RxD
3
in
Request to send
RTS
8
out
Clear to send
CTS
7
in
Data terminal ready
DTR
6
out
Signal ground
SG
5
The data protocol is permanently set to 9600 baud, ASCII character code, with eight bits per
character, one stop bit, and no parity bit. The serial port of the controlling computer must be
configured with the same settings.
Figure 17 shows the RS232 pin assignment of the drivers.
Figure 17: RS232 Driver Pin Assignment
Caution
Do not exceed 100 mA per driver.
Operation and Query Commands
Most operation and query commands control instrument functions and are interface
independent.
Command Parser Rules
•
A command consists of a mnemonic (for example, a switch) and, if required, a data
parameter. The mnemonic and the data parameter must be separated by at least one
space.
•
Parameters can be entered in various formats; for example, 10 and 10.0 are recognized as
the same value.
•
Commands can be sent in uppercase or lowercase characters.
Programming Guide –
25