Keithley 2701 - Page 13

Programming syntax .............................................................. 10-21
Command words ............................................................. 10-21
Query commands ............................................................ 10-23
Case sensitivity ............................................................... 10-23
Long-form and short-form versions ................................ 10-23
Short-form rules .............................................................. 10-24
Program messages ........................................................... 10-24
Response messages ......................................................... 10-27
Message exchange protocol ............................................ 10-27
RS-232 interface operation .................................................... 10-28
Sending and receiving data ............................................. 10-28
Baud rate ......................................................................... 10-28
Signal handshaking (flow control) .................................. 10-29
Terminator ....................................................................... 10-30
Selecting and configuring RS-232 interface ................... 10-30
RS-232 connections ........................................................ 10-32
Error messages ................................................................ 10-33
11 Status Structure
Overview .................................................................................. 11-2
Status byte and SRQ ......................................................... 11-2
Status register sets ............................................................. 11-2
Queues ............................................................................... 11-2
Clearing registers and queues ................................................... 11-4
Programming and reading registers ......................................... 11-5
Programming enable registers ........................................... 11-5
Reading registers .............................................................. 11-7
Status byte and service request (SRQ) ..................................... 11-8
Status byte register ............................................................ 11-8
Service request enable register .......................................... 11-9
Status byte and service request commands ..................... 11-10
Status register sets .................................................................. 11-10
Register bit descriptions .................................................. 11-11
Condition registers .......................................................... 11-17
Event registers ................................................................. 11-18
Event enable registers ..................................................... 11-18
Queues .................................................................................... 11-22
Output queue ................................................................... 11-22
Error queue ...................................................................... 11-22
12 Common Commands