Teledyne 200AH 用户手册
Teledyne API Model 200AH NO
X
Analyzer Instruction Manual, 06492, Rev. G2
5-28
5.7.
RS-232 Interface
The RS-232 communications protocol allows the instrument to be connected to a wide variety of
computer based equipment. The interface provides two basic functions in the M200AH.
computer based equipment. The interface provides two basic functions in the M200AH.
1. First is a comprehensive command interface for operating and diagnosing the analyzer. The
command set can be used interactively or operated via stored program. This interface has, in
fact, more capabilities than the front panel keyboard.
fact, more capabilities than the front panel keyboard.
2. The interface can provide an audit trail of analyzer events. In this function the port sends out
messages about instrument events like calibration or warning messages. If these messages are
captured on a printer or remote computer, they provide a continuous audit trail of the
analyzers operation and status.
captured on a printer or remote computer, they provide a continuous audit trail of the
analyzers operation and status.
5.7.1. Setting up the RS-232 Interface
The baud rate is set from the front panel by SETUP-MORE-COMM-BAUD. Select the baud rate
appropriate for your application from 300 to 19,200. It is important to note that the other device
must have identical settings in order for the communications to work correctly.
appropriate for your application from 300 to 19,200. It is important to note that the other device
must have identical settings in order for the communications to work correctly.
Second is physical wiring of the analyzer to the other unit. We have incorporated into the
Analyzer LED's that signal the presence of data on the communications lines, and also a switch
which can easily re-configure the analyzer from DCE to DTE if necessary. In addition, the front
panel diagnostics allow test data streams to be sent out of the port on command. This flexibility
and diagnostic capability should simplify attaching our equipment to other computers or printers.
If problems occur, see the Troubleshooting Section 9.3.2.
Analyzer LED's that signal the presence of data on the communications lines, and also a switch
which can easily re-configure the analyzer from DCE to DTE if necessary. In addition, the front
panel diagnostics allow test data streams to be sent out of the port on command. This flexibility
and diagnostic capability should simplify attaching our equipment to other computers or printers.
If problems occur, see the Troubleshooting Section 9.3.2.
Setup from the Front Panel
There are 3 additional RS-232 setups that can be done via the front panel.
1. Set the Instrument ID number by SETUP-MORE-COMM-ID, and enter a 4 digit number
from 0000-9999. This ID number is part of every message transmitted from the port.
2. Set the BAUD rate by SETUP-MORE-BAUD, then select the desired BAUD rate.
3. Set the RS-232 mode bit field in the VARS menu. To get to the variable press, SETUP-
MORE-VARS and scroll to RS-232_MODE, then press EDIT. The possible values are: