ETS-Lindgren HI-4457 Isotropic Magnetic Field Probe (Archived) - Manual (Page 30)

HI n 4457 Manual Page — 25
APPENDIX B
HI n n 4457 OPERATING PROTOCOLS
Introduction
The information in this appendix assumes that you have
purchased the optional HI n 4413P Fiber Optic / RS232
Interface, and are capable of communicating directly with
the HI n 4457 probe via computer. No system readout is
required when using this configuration.
Communication Protocol
Data Type: RS-232 Serial
Data Mode: Asynchronous
Word Length: 7 bit
Parity: Odd
Stop Bits: 1
Data Rate: 9600 baud
Information Transfer Protocol
The HI n 4457 operates as a Controller Mode device. This
probe only responds to commands from another device;
it transmits no data without receiving instructions to do
so.
Command Structure
A command to an HI n 4457 probe consists of 1) a
command letter, followed by 2) possible parameters, 3)
terminated with a carriage return. When it completes the
command, the probe responds with a string consisting of
1) a start character (":"), 2) the command letter, followed
by 3) data, if required, and terminated with 4) a carriage
return. If the command does not require the probe to
return any data, the probe simply responds with the
command letter and a carriage return. If an error occurs,
the probe responds with an error code, as detailed in
Archived 4/2/10