Arizona Hydrogen Sulfide Analyzer Jerome 631-X - Manual (Page 28)

Optional Communications Capability
Alarm output 30V DC, 100mA
Data output 1. RS-232 Serial, Baud Rate 1200 for use with data
logger, and/or Jerome communication program.
2. RS-232 Serial data format with 0 & 20mA current
logic levels; Baud Rate 1200 (special industrial
applications) and Analog 20 mA output.
"OPTION BOARD" - See APPENDIX D - JEROME 631-X OPTION BOARD on page 40.
Analog output 0 to 2V or 4 to 20 mA
Auto sample interval 5, 15, 30, or 60 minutes
Auto regeneration interval 6, 24 or 72 hours
Instrument I/O Interface
The 631-X I/O port (25 pin D-sub) provides the following functions:
• Serial data communication
Interface type: RS-232C full duplex, DCE
Parameters: 1200 Baud, 1 start bit, 8 data bits, 2 stop bits, no parity
Pin assignments:
Pin 1 Protective ground
Pin 2 Data in
Pin 3 Data out
Pin 7 Data ground
• Serial current loop
Interface type: 20mA current loop, full duplex
Parameters - 1200 Baud, 1 start bit, 8 data bits, 2 stop bits, no parity
Pin assignments:
Pin 1 Protective ground
Pin 4 Data out (+)
Pin 5 Data in (+)
Pin 14 Data out (-)
Pin 16 Data in (-)
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