Serial Ports - Thermo Scientific 49i Instruction Manual

System Description
I/O Components

Serial Ports

8-10 Model 49i Instruction Manual
• Span Gas Mode
• Set Background
• Ozonator Level 1-5
• Cal to Low Span
• Cal to High Span
• Ozonator Solenoid
• Aouts to Zero
• Aouts to FS
The actual use of these inputs will vary based on instrument configuration.
The digital inputs are TTL level compatible and are pulled up within the
analyzer. The active state can be user defined in firmware.
Two serial ports allow daisy chaining so that multiple analyzers may be
linked using one PC serial port.
The standard bi-directional serial interface can be configured for either
RS-232 or RS-485. The serial baud rate is user selectable in firmware for
standard speeds from 1200 to 19,200 baud. The user can also set the data
bits, parity, and stop bits. The following protocols are supported:
• C-Link
• Streaming Data
• Modbus Slave
• Geysitech (Bayern-Hessen)
The Streaming Data protocol transmits user-selected measurement data via
the serial port in real-time for capture by a serial printer, data logger, or PC.
Thermo Fisher Scientific