Teledyne GC-Pro/FID - Gas Chromatograph - Manual (Page 40)

Installation GC-Pro FID
Teledyne Analytical Instruments 26
pin # Description pin # Description
21 Range 1 Contact 46 Alarm 1 NO Contact
22 Range 2 Contact 47
23 - Output 0-1 v (Channel 2) 48 Exhaust Solenoid Return
24 + Output 0-1 v (Channel 1) 49
25 50 Sample Solenoid Return
3.3.2.10 RS-232 P ORT
The digital signal output is a standard RS-232 serial communications
port used to connect the analyzer to a computer, terminal, or other digital
device. It requires a standard 9-pin D connector.
Input: The input functions using RS-232 that have been implemented
to date are described in Table 3-8.
Table 3-10: Commands via RS-232 Input
Command Description
AS <enter> Auto Span immediately (continuous mode)
SV <enter> Switch to Span Valve
ZV <enter> Switch to Zero Valve
AV <enter> Switch to Analyze Valve
C1 <enter> If in 1Shot mode, start a cycle
C2 <enter> If in 1Shotm modde, start a span cycle
PMA <enter> Switch to standard message
PMB <enter> Switch to FID output mode
PMC <enter> Switch to Query Mode (used for interface with
OPC server)
Implementation: The RS-232 protocol allows some flexibility in its
implementation. Table 3-9 lists certain RS-232 values that are required
by the Standard Mode GC-Pro FID implementation.
Table 3-11: Required RS-232 Options
Parameter Setting
Baud 9600
Byte 8 bits