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Connections
Remote Control
Thermo Fisher Scientific
RS-232 Commands
Appendix B
The RS-232 interface enables the Model 5030 to be remotely controlled by
a host RS-232 device such as a PC, PLC, and data logger.
The two female connectors labeled "COM1" and "COM2" on the rear
panel are 25-pin and 9-pin, respectively. Either connector can be connected
to the remote device. The remaining connector can be used to connect a
second serial output.
The transmission of all data takes place via the following settings:
Bits per Second
9600, 4800, 2400, 1200, 600 or 300
Data Bits
7
Parity
Even
Stop Bits
2
Flow Control
As a rule, a remote command always consists of a character or special
character and, if necessary, is followed by numbers. A stop code forms the
end of a command.
The stop code is either <CR> (carriage return) or <LF> (line feed).
However, it is also permitted to send several stop codes. Besides the
characters <CR> and <LF> also the character 7Fhex, or respectively FFhex
can be used as stop code.
The Model 5030 is provided with a receive buffer of 256 characters.
Consequently, several commands can be received immediately one after the
other. For example; a complete set of parameters (approximately 20
commands) can be sent to the Model 5030 as one contiguous string of
commands.
The entire systems structure allows for operating several measuring
instruments being connected to a common bus line (RS485). This way, all
commands can be received from all devices. In the event a command is to be
executed by one precisely defined device, then the respective device address
has to precede the command character when sending.
Model 5030 SHARP Monitor Instruction Manual
B-1
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